Cap. 123 sub. leg. I

Building (Standards of Sanitary Fitments, Plumbing, Drainage Works and Latrines) Regulations (Cap. 123, section 38) [1 January 1960](Format changes—E.R. 3 of 2020) Part I Preliminary 1. Citation These regulations may be cited as the Building (Standards of Sanitary Fitments, Plumbing, Drainage Works and Latrines) Regulations. 2. Interpretation In these regulations, unless the context otherwise requires—anti-syphonage pipe (反虹吸管) means a pipe used or constructed to be used for the purpose of preventing loss of water seal from the trap of a soil fitment or waste fitment;approved (批准) means approved by the Building Authority;cesspool (污水池) means an underground chamber constructed to be used for the reception and storage of foul water;chemical closet fitment (化學處理廁所設備) means a latrine fitment in which the contents of the receptacle for excrement are treated by means of chemicals;cleaning eye (清理孔) means an access opening in a pipe;foul water (髒水) means any water contaminated by soil, waste or trade effluent;latrine (廁所) means a room used or intended to be used for the housing of latrine fitments;latrine fitment (廁所設備) means a fitment containing a receptacle for excrement, which is removable;manhole (沙井) means a chamber constructed on a drain or sewer to provide access thereto for inspection, testing and the clearance of obstructions;nullah (大溝渠) includes any trained streamcourse;private sewer (私家污水渠) means a sewer which is not a public sewer;public channel (公共渠道) means a channel vested in and maintained by the Government;public sewer (公共污水渠) means a sewer vested in and maintained by the Government;rain water pipe (雨水管) means a pipe used or constructed to be used for carrying off surface water directly from roof surfaces, verandahs and balconies;septic tank (化糞池) means a tank, for the reception of soil and waste from a building, in which the liquification of solid organic matter occurs; (L.N. 361 of 1980)slop sink (污水盆) means a sink used or constructed to be used for receiving solid or liquid excrement;sludge (污泥) means the layer of material settled to the bottom of a septic tank where reduction by anaerobic decomposition occurs; (L.N. 361 of 1980)soil (便溺污水) means the discharge from a soil fitment;soil fitment (便溺污水設備) means a watercloset fitment, trough watercloset, urinal, slop sink, bidet or any similar fitment;soil pipe (便溺污水管) means a pipe used or constructed to be used for carrying off soil;sub-soil water (地下水) means water occurring naturally below the surface of the ground;surface water (地面水) means rain water from any part of a building including any paved area or ground, whether paved or not, appurtenant to any building;trade effluent (工商業污水) means any liquid, either with or without particles of matter in suspension therein, which is wholly or in part produced in the course of any trade or industry;waste (廢水) means used water from a waste fitment or similar fitment;waste fitment (廢水設備) means a bath, lavatory basin or sink, other than a slop sink;waste pipe (廢水管) means a pipe used or constructed to be used for carrying off waste;water authority (水務監督) and waterworks (水務設施) have the meaning assigned to them by section 2 of the Waterworks Ordinance (Cap. 102). (L.N. 62 of 1966)(L.N.191 of 2015) Part II Standards of Sanitary Fitments 3. Interpretation of Part II In the regulations in this Part, unless the context otherwise requires—cinema (電影院) means a building or part of a building which is designed for cinematographic displays; (L.N. 191 of 2015)department store (百貨公司) has the meaning given by section 2 of Schedule 1 to the Fire Safety (Commercial Premises) Ordinance (Cap. 502); (L.N. 191 of 2015)factory (工廠) has the meaning given by section 2(1) of the Factories and Industrial Undertakings Ordinance (Cap. 59); (L.N. 191 of 2015)food room (食物室) has the meaning given by section 3(1) of the Food Business Regulation (Cap. 132 sub. leg. X); (L.N. 191 of 2015)funeral parlour (殯儀館) means a building or part of a building which is designed for performing funeral services; (L.N. 191 of 2015) industrial undertaking (工業經營)— (a) has the meaning given by section 2(1) of the Factories and Industrial Undertakings Ordinance (Cap. 59); but (b) does not include a food room of a restaurant; (L.N. 191 of 2015) place of public entertainment (公眾娛樂場所)— (a) has the meaning given by section 2 of the Places of Public Entertainment Ordinance (Cap. 172); but (b) does not include a sports stadium or cinema; (L.N. 191 of 2015) religious institution (宗教機構)— (a) means a building or part of a building which is designed for holding services or saying prayers by congregations loyal to a belief in accordance with the practice of religious principles; and (b) includes a place referred to in paragraph (b) of the definition of Chinese temple in section 2 of the Chinese Temples Ordinance (Cap. 153); (L.N. 191 of 2015) residential building (住宅建築物) means a domestic building, but does not include any hostel, dormitory or other room or premises provided for housing or lodging some or all of the pupils of any school out of school hours, whether such hostel dormitory or other room or premises is in or is part of the same building or group of buildings as the classrooms in the school or not; (73 of 1983 s. 3)restaurant (食肆) has the meaning given by section 31(2) of the Food Business Regulation (Cap. 132 sub. leg. X); (L.N. 191 of 2015)school (學校) has the meaning assigned to it by section 3 of the Education Ordinance (Cap. 279);shopping arcade (商場) includes the passageways connecting the shops that form the arcade; (L.N. 191 of 2015)sports stadium (體育場) means a building or part of a building which is designed for sporting activities; (L.N. 191 of 2015)tenement house (唐樓) means a building in the domestic part of which any living room is intended or adapted for the use of more than one tenant or sub-tenant; usable floor area (實用樓面面積), except in regulation 7A(3)(a), in relation to a building— (a) means the aggregate of the areas of the floors in the building; but (b) does not include—(i) any staircase, public circulation space, lift landing, kitchen in a self-contained flat or lavatory in the building; or(ii) any space occupied by machinery for a lift, or for the air-conditioning or utility system or any other similar service, provided for the building; (L.N. 191 of 2015) workplace (工作地點) means— (a) an office; (b) an industrial undertaking; (c) a shop that is neither within a shopping arcade nor within a department store; or (d) a food room of a restaurant, where the number of persons in the restaurant (determined in accordance with regulation 8(2)(a)) is more than 300. (L.N. 191 of 2015) (L.N. 196 of 1996; L.N. 191 of 2015) 4. Residential buildings (1) Save as provided in paragraph (2), in every residential building—(a) where separate waterclosets are not provided for male persons and for female persons, the number of watercloset fitments provided must be not less than the number specified in Table 1;(b) where separate waterclosets are provided for male persons and for female persons, the number of watercloset fitments provided for— (L.N. 191 of 2015)(i) male persons must be not less than the number specified in Part 1 of Table 2; and(ii) female persons must be not less than the number specified in Part 2 of Table 2; (c) where separate waterclosets are provided for male persons and for female persons and urinals are installed for the use of male persons, the number of watercloset fitments and urinals provided for male persons must be not less than the number specified in Table 3; and(d) the number of lavatory basins, and baths or showers, provided must be not less than the number specified in Table 4. Table 1 Number of Watercloset Fitments (where Separate Waterclosets are Not Provided for Male Persons and for Female Persons in Residential Building) Column 1 Column 2 Number of persons inresidential building Number of watercloset fitments 1. Not more than 8 1 2. More than 8 1 plus 1 for every 12 persons, or part of those persons, over 8 (L.N. 191 of 2015) Table 2 Number of Watercloset Fitments (where Separate Waterclosets are Provided for Male Persons and for Female Persons in Residential Building) Part 1 Number of Watercloset Fitments Provided for Male Persons in Residential Building Column 1 Column 2 Number of male persons in residential building Number of watercloset fitments 1. Not more than 8 1 2. More than 8 1 plus 1 for every 12 male persons, or part of those persons, over 8 Part 2 Number of Watercloset Fitments Provided for Female Persons in Residential Building Column 1 Column 2 Number of female persons in residential building Number of watercloset fitments 1. Not more than 8 1 2. More than 8 1 plus 1 for every 12 female persons, or part of those persons, over 8 (L.N. 191 of 2015) Table 3 Number of Watercloset Fitments and Urinals Provided for Male Persons in Residential Building Column 1 Column 2 Column 3 Number of male persons in residential building Number of watercloset fitments Number of urinals 1. Not more than 12 1 1 2. More than 12 1 plus 1 for every 12 male persons, or part of those persons, over 12 1 plus 1 for every 12 male persons, or part of those persons, over 12 (L.N. 191 of 2015) Table 4 Number of Lavatory Basins and Baths or Showers Provided in Residential Building Column 1 Column 2 Column 3 Number of personsin residentialbuilding Number of lavatory basins Number of baths or showers 1. Not more than 8 1 1 2. More than 8 1 plus 1 for every 12 persons, or part of those persons, over 8 1 plus 1 for every 12 persons, or part of those persons, over 8 (L.N. 191 of 2015) (2) (a) For a tenement house, water supply points may, subject to the provisions of subparagraphs (b) and (c), be provided in lieu of lavatory basins and baths or showers and, for the purposes of paragraph (1)(d), the provision of one water supply point shall be deemed to be the provision of one lavatory basin and one bath or shower.(b) The number of water supply points so provided shall be not less than the number of lavatory basins required, by paragraph (1)(d), to be provided in the tenement house.(c) Such water supply points shall be provided in a separate compartment, not less than 0.75 m2 in area, or in a watercloset. (L.N. 294 of 1976)(d) For the purposes of this paragraph, any supply of water provided for a sink in any kitchen shall not be a water supply point.(3) The watercloset fitments or the watercloset fitments and urinals, as the case may be, provided in any residential building in accordance with the provisions of paragraph (1), and, where, in accordance with regulation 9, latrine fitments or latrine fitments and bucket urinals, as the case may be, are provided in any residential building, the same shall be situated in the building to the satisfaction of the Building Authority.(4) For the purposes of this regulation—(a) the number of persons in a residential building is to be determined—(i) for a tenement house, dormitory, barrack or boarding house—at the rate of 1 person for every 3 m2 of the usable floor area of the tenement house, dormitory, barrack or boarding house, as the case may be; or(ii) for any other residential building—at the rate of 1 person for every 9 m2 of the usable floor area of the building; and (L.N. 191 of 2015)(b) where separate waterclosets are provided for male persons and for female persons in a residential building, the proportion of male persons to female persons in the building is, unless the Building Authority is satisfied that the proportion is or will be otherwise, deemed to be 1:1.(L.N. 191 of 2015) 5. Workplaces (L.N. 191 of 2015)(1) Save as provided in paragraph (3), in every workplace— (L.N. 191 of 2015)(a) the number of watercloset fitments and urinals provided for male persons must be not less than the number specified in Table 5;(b) the number of watercloset fitments provided for female persons must be not less than the number specified in Table 6; and(c) the number of lavatory basins provided for— (L.N. 191 of 2015)(i) male persons must be not less than the number specified in Part 1 of Table 7; and(ii) female persons must be not less than the number specified in Part 2 of Table 7. Table 5 Number of Watercloset Fitments and Urinals Provided for Male Persons in Workplace Column 1 Column 2 Column 3 Number of malepersons inworkplace Number of watercloset fitments Number ofurinals 1. Not morethan 10 1 Nil 2. 11–100 1 for every 25 male persons or part of those persons 1 for every 50 male persons or part of those persons 3. More than 100 4 plus 1 for every 50 male persons, or part of those persons, over 100 2 plus 1 for every 50 male persons, or part of those persons, over 100 (L.N. 191 of 2015) Table 6 Number of Watercloset Fitments Provided for Female Persons in Workplace Column 1 Column 2 Number of female persons in workplace Number of watercloset fitments 1. Not more than 10 1 2. 11–25 2 3. More than 25 2 plus 1 for every 25 female persons, or part of those persons, over 25 (L.N. 191 of 2015) Table 7 Number of Lavatory Basins Provided in Workplace Part 1 Number of Lavatory Basins Provided for Male Persons in Workplace Column 1 Column 2 Number of male personsin workplace Number of lavatory basins 1. Not more than 100 1 for every 25 male persons or part of those persons 2. More than 100 4 plus 1 for every 50 male persons, or part of those persons, over 100 Part 2 Number of Lavatory Basins Provided for Female Persons in Workplace Column 1 Column 2 Number of female personsin workplace Number of lavatory basins 1. Not more than 100 1 for every 25 female persons or part of those persons 2. More than 100 4 plus 1 for every 50 female persons, or part of those persons, over 100 (L.N. 191 of 2015) (2) (Repealed L.N. 191 of 2015)(3) Where, in any workplace, the number of persons (whether male persons or female persons, or both) does not exceed 10, there must be provided not less than one watercloset fitment and one lavatory basin.(4) In every workplace, the watercloset fitments, urinals and lavatory basins for male persons and the watercloset fitments and lavatory basins for female persons shall be provided in separate rooms exclusively for the use of male persons and female persons respectively.(5) For the purposes of this regulation—(a) the number of persons in a workplace is to be determined—(i) for an office—at the rate of 1 person for every 9 m2 of the usable floor area of the office;(ii) for an industrial undertaking that is a flatted factory—at the rate of 1 person for every 4.5 m2 of the usable floor area of the factory;(iii) for an industrial undertaking that is a warehouse, godown or storage area—at the rate of 1 person for every 30 m2 of the usable floor area of the warehouse, godown or storage area, as the case may be; (iv) for a shop that is neither within a shopping arcade nor within a department store—at the rate of 1 person for every 15 m2 of the usable floor area of the shop; or(v) for a food room of a restaurant, where the number of persons in the restaurant (determined in accordance with regulation 8(2)(a)) is more than 300—at the rate of 1 person for every 4.5 m2 of the usable floor area of the food room; (L.N. 191 of 2015)(b) the number of persons in an industrial undertaking (other than a flatted factory, warehouse, godown or storage area) is to be determined by the Commissioner for Labour; and(c) the proportion of male persons to female persons in a workplace is—(i) for an industrial undertaking (other than a flatted factory, warehouse, godown or storage area), determined by the Commissioner for Labour; and(ii) for any other workplace, deemed to be 1:1. (L.N. 191 of 2015)(L.N. 191 of 2015) 6. Places of public entertainment (1) In every place of public entertainment— (L.N. 191 of 2015)(a) the number of watercloset fitments and urinals provided for male persons must be not less than the number specified in Table 8;(b) the number of watercloset fitments provided for female persons must be not less than the number specified in Table 9; and(c) the number of lavatory basins provided for—(i) male persons must be not less than the number specified in item 1 of Table 10; and(ii) female persons must be not less than the number specified in item 2 of Table 10. Table 8 Number of Watercloset Fitments and Urinals Provided for Male Persons in Place of Public Entertainment Column 1 Column 2 Column 3 Number of malepersons in place ofpublic entertainment Number of watercloset fitments Number of urinals 1. Not more than 400 1 for every 100 male persons or part of those persons 1 for every 50 male persons or part of those persons 2. More than 400 4 plus 1 for every 250 male persons, or part of those persons, over 400 1 for every 50 male persons or part of those persons (L.N. 191 of 2015) Table 9 Number of Watercloset Fitments Provided for Female Persons in Place of Public Entertainment Column 1 Column 2 Number of femalepersons in place ofpublic entertainment Number of watercloset fitments 1. Not more than 250 2 for every 50 female persons or part of those persons 2. More than 25 10 plus 1 for every 40 female persons, or part of those persons, over 250 (L.N. 191 of 2015) Table 10 Number of Lavatory Basins Provided in Place of Public Entertainment Column 1 Column 2 Persons in place of public entertainment Number of lavatory basins 1. Male persons 1 for every 100 male persons or part of those persons 2. Female persons 1 for every 100 female persons or part of those persons (L.N. 191 of 2015) (2) In every place of public entertainment, the watercloset fitments, urinals and lavatory basins for male persons and the watercloset fitments and lavatory basins for female persons shall be provided in separate rooms exclusively for the use of male persons and female persons respectively.(3) For the purposes of this regulation—(a) the number of persons in a place of public entertainment is to be determined—(i) for a museum or exhibition hall—at the rate of 1 person for every 2 m2 of the usable floor area of the museum or exhibition hall, as the case may be;(ii) for a venue for a dance party—at the rate of 1 person for every 0.75 m2 of the usable floor area of the dancing area in the venue;(iii) for an assembly area or auditorium without seating or with movable seating—at the rate of 1 person for every 0.5 m2 of the usable floor area of the area intended for use by the spectators or visitors in the assembly area or auditorium, as the case may be; or(iv) for an assembly area or auditorium with non-movable seating—at the rate of 1 person for every seat in the assembly area or auditorium, as the case may be; and (L.N. 191 of 2015)(b) the proportion of male persons to female persons in a place of public entertainment is deemed to be 1:1.5.(L.N. 196 of 1996; L.N. 191 of 2015) 6A. Sports stadia (1) In every sports stadium—(a) the number of watercloset fitments and urinals provided for male persons must be not less than the number specified in Table 11;(b) the number of watercloset fitments provided for female persons must be not less than the number specified in Table 12; and(c) the number of lavatory basins provided for—(i) male persons must be not less than the number specified in item 1 of Table 13; and(ii) female persons must be not less than the number specified in item 2 of Table 13. Table 11 Number of Watercloset Fitments and Urinals Provided for Male Persons in Sports Stadium Column 1 Column 2 Number of waterclosetfitments Number of urinals 1. 1 for every 100 male persons or part of those persons 1 for every 100 male persons or part of those persons Table 12 Number of Watercloset Fitments Provided for Female Persons in Sports Stadium 1. 1 for every 50 female persons or part of those persons Table 13 Number of Lavatory Basins Provided in Sports Stadium Column 1 Column 2 Persons in sports stadium Number of lavatory basins 1. Male persons 1 for every 100 male persons or part of those persons 2. Female persons 1 for every 100 female persons or part of those persons (2) In every sports stadium, the watercloset fitments, urinals and lavatory basins for male persons and the watercloset fitments and lavatory basins for female persons must be provided in separate rooms exclusively for the use of male persons and female persons respectively.(3) For the purposes of this regulation—(a) the number of persons in a sports stadium is to be determined—(i) for a sports stadium without seating or with movable seating—at the rate of 1 person for every 0.5 m2 of the usable floor area of the area intended for use by the spectators in the stadium; or(ii) for a sports stadium with non-movable seating—at the rate of 1 person for every seat in the stadium; and(b) the proportion of male persons to female persons in a sports stadium is deemed to be 1:1.(L.N. 191 of 2015) 7. Cinemas (1) In every cinema—(a) the number of watercloset fitments and urinals provided for male persons must be not less than the number specified in Table 14;(b) the number of watercloset fitments provided for female persons must be not less than the number specified in Table 15; and(c) the number of lavatory basins provided for—(i) male persons must be not less than the number specified in item 1 of Table 16; and(ii) female persons must be not less than the number specified in item 2 of Table 16. Table 14 Number of Watercloset Fitments and Urinals Provided for Male Persons in Cinema Column 1 Column 2 Column 3 Number of male persons in cinema Number of watercloset fitments Number of urinals 1. Not more than 200 1 1 for every 100 male persons or part of those person 2. 201–500 2 1 for every 100 male persons or part of those persons 3. 501–1 000 3 1 for every 100 male persons or part of those persons 4. More than 1 000 3 plus 1 for every 500 male persons, or part of those persons, over 1 000 1 for every 100 male persons or part of those persons Table 15 Number of Watercloset Fitments Provided for Female Persons in Cinema Column 1 Column 2 Number of femalepersons in cinema Number of watercloset fitments 1. Not more than 120 1 for every 40 female persons or part of those persons 2. 121–250 3 plus 1 for every 65 female persons, or part of those persons, over 120 3. 251–420 5 plus 1 for every 85 female persons, or part of those persons, over 250 4. More than 420 7 plus 1 for every 100 female persons, or part of those persons, over 420 Table 16 Number of Lavatory Basins Provided in Cinema Column 1 Column 2 Persons in cinema Number of lavatory basins 1. Male persons 1 for every 100 male persons or part of those persons 2. Female persons 1 for every 100 female persons or part of those persons (L.N. 191 of 2015) (2) In every cinema, the watercloset fitments, urinals and lavatory basins for male persons and the watercloset fitments and lavatory basins for female persons shall be provided in separate rooms exclusively for the use of male persons and female persons respectively.(3) For the purposes of this regulation—(a) the number of persons in a cinema is to be determined at the rate of 1 person for every seat in the cinema; and (L.N. 191 of 2015)(b) the proportion of male persons to female persons in a cinema is deemed to be 1:1.5. (L.N. 191 of 2015) 7A. Shopping arcades and department stores (1) In every shopping arcade or department store—(a) the number of watercloset fitments and urinals provided for male persons must be not less than the number specified in Table 17;(b) the number of watercloset fitments provided for female persons must be not less than the number specified in Table 18; and(c) the number of lavatory basins provided for—(i) male persons must be not less than the number specified in Part 1 of Table 19; and(ii) female persons must be not less than the number specified in Part 2 of Table 19. Table 17 Number of Watercloset Fitments and Urinals Provided for Male Persons in Shopping Arcade or Department Store Column 1 Column 2 Column 3 Number of male persons in shopping arcade or department store Number of watercloset fitments Number of urinals 1. Not more than 500 1 for every 125 male persons or part of those persons 1 for every 250 male persons or part of those persons 2. More than 500 4 plus 1 for every 250 male persons, or part of those persons,over 500 1 for every 250 male persons or part of those persons Table 18 Number of Watercloset Fitments Provided for Female Persons in Shopping Arcade or Department Store Column 1 Column 2 Number of female persons in shopping arcade ordepartment store Number of watercloset fitments 1. Not more than 50 1 for every 25 female persons or part of those persons 2. 51–125 3 3. 126–1 800 3 plus 1 for every 80 female persons, or part of those persons, over 125 4. More than 1 800 24 plus 1 for every 90 female persons, or part of those persons, over 1 800 Table 19 Number of Lavatory Basins Provided in Shopping Arcade or Department Store Part 1 Number of Lavatory Basins Provided for Male Persons in Shopping Arcade or Department Store Column 1 Column 2 Number of male personsin shopping arcade ordepartment store Number of lavatory basins 1. Not more than 500 1 for every 125 male persons or part of those persons 2. More than 500 4 plus 1 for every 250 male persons, or part of those persons, over 500 Part 2 Number of Lavatory Basins Provided for Female Persons in Shopping Arcade or Department Store Column 1 Column 2 Number of female personsin shopping arcade ordepartment store Number of lavatory basins 1. Not more than 500 1 for every 125 female persons or part of those persons 2. More than 500 4 plus 1 for every 250 female persons, or part of those persons, over 500 (2) In every shopping arcade or department store, the watercloset fitments, urinals and lavatory basins for male persons and the watercloset fitments and lavatory basins for female persons must be provided in separate rooms exclusively for the use of male persons and female persons respectively.(3) For the purposes of this regulation—(a) the number of persons in a shopping arcade is to be determined—(i) for the basement, ground, first or second floor of the shopping arcade—at the rate of 1 person for every 3 m2 of the usable floor area of the relevant floor of the shopping arcade; or(ii) for the third floor (or above) of the shopping arcade—at the rate of 1 person for every 4.5 m2 of the usable floor area of the relevant floor of the shopping arcade;(b) the number of persons in a department store is to be determined—(i) for the basement, ground, first or second floor of the department store—at the rate of 1 person for every 3 m2 of the usable floor area of the relevant floor of the department store; or(ii) for the third floor (or above) of the department store—at the rate of 1 person for every 4.5 m2 of the usable floor area of the relevant floor of the department store; and(c) the proportion of male persons to female persons in a shopping arcade or department store is deemed to be 1:1.5.(4) In paragraph (3)(a)— usable floor area (實用樓面面積), in relation to a shopping arcade— (a) means the aggregate of the areas of the floors in the shopping arcade; but (b) does not include—(i) any staircase, lift landing or lavatory in the shopping arcade; or(ii) any space occupied by machinery for a lift, or for the air-conditioning or utility system or any other similar service, provided for the shopping arcade. (L.N. 191 of 2015) 7B. Religious institutions (1) In every religious institution—(a) the number of watercloset fitments and urinals provided for male persons must be not less than the number specified in Table 20;(b) the number of watercloset fitments provided for female persons must be not less than the number specified in Table 21; and(c) the number of lavatory basins provided for—(i) male persons must be not less than the number specified in item 1 of Table 22; and(ii) female persons must be not less than the number specified in item 2 of Table 22.Table 20 Number of Watercloset Fitments and Urinals Provided for Male Persons in Religious Institution Column 1 Column 2 Number of waterclosetfitments Number of urinals 1. 1 for every 100 male persons or part of those persons 1 for every 100 male persons or part of those persons Table 21 Number of Watercloset Fitments Provided for Female Persons in Religious Institution 1. 1 for every 50 female persons or part of those persons Table 22 Number of Lavatory Basins Provided in Religious Institution Column 1 Column 2 Persons in religiousinstitution Number of lavatory basins 1. Male persons 1 for every 100 male persons or part of those persons 2. Female persons 1 for every 100 female persons or part of those persons (2) In every religious institution, the watercloset fitments, urinals and lavatory basins for male persons and the watercloset fitments and lavatory basins for female persons must be provided in separate rooms exclusively for the use of male persons and female persons respectively.(3) For the purposes of this regulation—(a) the number of persons in a religious institution is to be determined at the rate of 1 person for every 0.5 m2 of the usable floor area of the religious institution; and(b) the proportion of male persons to female persons in a religious institution is deemed to be 1:1.5.(L.N. 191 of 2015) 7C. Funeral parlours (1) In every funeral parlour—(a) the number of watercloset fitments and urinals provided for male persons must be not less than the number specified in Table 23;(b) the number of watercloset fitments provided for female persons must be not less than the number specified in Table 24; and(c) the number of lavatory basins provided for—(i) male persons must be not less than the number specified in item 1 of Table 25; and(ii) female persons must be not less than the number specified in item 2 of Table 25. Table 23 Number of Watercloset Fitments and Urinals Provided for Male Persons in Funeral Parlour Column 1 Column 2 Number of waterclosetfitments Number of urinals 1. 1 for every 150 male persons or part of those persons 1 for every 150 male persons or part of those persons Table 24 Number of Watercloset Fitments Provided for Female Persons in Funeral Parlour 1. 1 for every 75 female persons or part of those persons Table 25 Number of Lavatory Basins Provided in Funeral Parlour Column 1 Column 2 Persons in funeralparlour Number of lavatorybasins 1. Male persons 1 for every 300 male persons or part of those persons 2. Female persons 1 for every 300 female persons or part of those persons (2) In every funeral parlour, the watercloset fitments, urinals and lavatory basins for male persons and the watercloset fitments and lavatory basins for female persons must be provided in separate rooms exclusively for the use of male persons and female persons respectively.(3) For the purposes of this regulation—(a) the number of persons in a funeral parlour is to be determined at the rate of 1 person for every 0.5 m2 of the usable floor area of the funeral parlour; and(b) the proportion of male persons to female persons in a funeral parlour is deemed to be 1:1.5.(L.N. 191 of 2015) 8. Restaurants (1) Subject to paragraph (1A), in every restaurant—(a) the number of watercloset fitments and urinals provided for male persons must be not less than the number specified in Table 26;(b) the number of watercloset fitments provided for female persons must be not less than the number specified in Table 27; and(c) the number of lavatory basins provided for—(i) male persons must be not less than the number specified in Part 1 of Table 28; and(ii) female persons must be not less than the number specified in Part 2 of Table 28.Table 26 Number of Watercloset Fitments and Urinals Provided for Male Persons in Restaurant Column 1 Column 2 Column 3 Number ofmale personsin restaurant Number of watercloset fitments Number of urinals 1. Not more than 40 1 1 2. 41–80 1 2 3. 81–150 2 3 4. 151–200 2 4 5. 201–300 3 4 plus 1 for every 50 male persons, or part of those persons, over 200 6. 301–400 4 6 plus 1 for every 50 male persons, or part of those persons, over 300 7. 401–650 5 8 plus 1 for every 50 male persons, or part of those persons, over 400 8. More than 650 5 plus 1 for every 250 male persons, or part of those persons, over 650 13 plus 1 for every 50 male persons, or part of those persons, over 650 Table 27 Number of Watercloset Fitments Provided for Female Persons in Restaurant Column 1 Column 2 Number of femalepersons in restaurant Number of waterclosetfitments 1. Not more than 60 1 2. 61–120 2 3. 121–180 3 4. 181–200 4 5. More than 200 4 plus 1 for every 100 female persons, or part of those persons, over 200 Table 28 Number of Lavatory Basins Provided in Restaurant Part 1 Number of Lavatory Basins Provided for Male Persons in Restaurant Column 1 Column 2 Number of malepersons in restaurant Number of lavatorybasins 1. Not more than 80 1 2. 81–120 2 3. 121–150 3 4. More than 150 3 plus 1 for every 100 male persons, or part of those persons, over 150 Part 2 Number of Lavatory Basins Provided for Female Persons in Restaurant Column 1 Column 2 Number of femalepersons in restaurant Number of lavatorybasins 1. Not more than 120 1 2. 121–180 2 3. 181–250 4 4. More than 250 4 plus 1 for every 100 female persons, or part of those persons, over 250 (L.N. 191 of 2015)(1A) For a restaurant in which the number of persons (determined in accordance with paragraph (2)(a)) is less than 25, the requirements set out in paragraph (1) are regarded as having been complied with if, in the restaurant—(a) 1 watercloset fitment and 1 lavatory basin are provided for both male persons and female persons; and(b) 1 urinal is provided for male persons. (L.N. 191 of 2015)(1B) Where, in a restaurant in which the number of persons (determined in accordance with paragraph (2)(a)) is less than 25, only—(a) 1 watercloset fitment and 1 lavatory basin are provided for both male persons and female persons; and(b) 1 urinal is provided for male persons,the watercloset fitment and the urinal must be provided in separate rooms. (L.N. 191 of 2015)(1C) In every restaurant (except a restaurant to which paragraph (1B) applies), the watercloset fitments, urinals and lavatory basins for male persons and the watercloset fitments and lavatory basins for female persons must be provided in separate rooms exclusively for the use of male persons and female persons respectively. (L.N. 191 of 2015)(2) For the purposes of this regulation—(a) the number of persons in a restaurant is to be determined at the rate of 1 person for every 1.5 m2 of the usable floor area of the restaurant (excluding the food room of the restaurant); and (L.N. 191 of 2015)(b) the proportion of male persons to female persons in a restaurant is deemed to be 1:1.5. (L.N. 191 of 2015) 8A. (Repealed L.N. 242 of 1997) 9. Where soil fitments prohibited latrine fitments, etc. to be provided in lieu thereof, etc. (1) Where, in any case, the installation of soil fitments is, under regulation 89, prohibited—(a) latrine fitments shall be provided in lieu of watercloset fitments, and the number thereof shall be not less than the number of watercloset fitments required by regulation 4, 5, 6, 6A, 7, 7A, 7B, 7C or 8, as the case may be; and(b) bucket urinals shall be provided in lieu of urinals, and, likewise, the number thereof shall be not less than the number of urinals required by regulation 4, 5, 6, 6A, 7, 7A, 7B, 7C or 8, as the case may be.(2) Where, by regulation 4, 5, 6, 6A, 7, 7A, 7B, 7C or 8, the provision of watercloset fitments is required, trough waterclosets may be provided and, for the purposes of those regulations, every metre of trough watercloset shall be deemed to be the equivalent of one watercloset fitment.(3) Where, by regulation 4, 5, 6, 6A, 7, 7A, 7B, 7C or 8, the provision of urinals is required, and trough urinals are installed, every 0.5 m of trough urinals shall, for the purposes of those regulations, be deemed to be the equivalent of one urinal.(L.N. 294 of 1976; L.N. 191 of 2015) 10. (Repealed L.N. 191 of 2015) 10A. Supply of water (1) Where under these regulations there is required to be provided in any building any watercloset fitment, trough watercloset, latrine fitment or urinal, there shall be a permanent connexion to such building of a supply of water which is satisfactory and sufficient in all respects for the purpose of flushing every such watercloset fitment, trough watercloset, latrine fitment or urinal and for all other purposes for which such supply is to be used.(2) Where under these regulations there is required to be provided in any building any waste fitment or shower, there shall be a permanent connexion to such building of a supply of water which is satisfactory and sufficient in all respects for all the purposes for which every such waste fitment or shower is to be used and for all other purposes for which such supply is to be used.(3) The connexion of a supply of water for the purposes of paragraph (1) or (2) shall be—(a) of a supply of water from the waterworks; or(b) if the Building Authority gives his permission in writing, of a supply of water from a well within the site of the building; or (c) if in all the circumstances of the case the Building Authority is satisfied that it is not reasonable that the connexion be of a supply of water from the waterworks or from a well within the site of the building, of a supply of water from such other source as the Building Authority may permit or direct.(4) In determining whether a supply of water is satisfactory and sufficient under this regulation, regard shall be had to the nature, type and size of the building, the purpose for which it was constructed or is intended to be or is used and all the purposes for which the supply of water is or is likely to be used.(5) Before the Building Authority gives his permission under paragraph (3)(b) for the connexion to a building of a supply of water from a well within the site of the building or before the Building Authority under paragraph (3)(c) permits or directs the connexion to a building of a supply of water from a source other than the waterworks or a well within the site of the building, there shall be produced to the Building Authority by the building owner a certificate from the water authority as to whether or not a supply of water from the waterworks is available for the purposes for which such connexion is made or to be made.(6) The water authority shall issue the certificate required under paragraph (5) within 10 days of receiving an application in writing therefor.(7) For the purposes of this regulation—(a) a supply of water shall be satisfactory if the yield of water from such well during a period from 1 December to 30 April next following, as ascertained and certified in accordance with this paragraph, would be sufficient in all respects for all the purposes for which the well is to be used; and(b) the yield of water from a well shall be ascertained by the authorized person by a recognized method—(i) during the first such period referred to in subparagraph (a), after the first consent to the commencement of the building works is given by the Building Authority in respect of the building for which the well is required or, if such first consent is given during such a period, then during such period; or(ii) if the Building Authority so directs, during any such period as is referred to in subparagraph (a) after the first consent to the commencement of the building works is given by the Building Authority in respect of the building for which the well is required; and(c) the yield of water from the well ascertained in accordance with subparagraph (b) shall be certified by the authorized person. (L.N. 439 of 1990)(L.N. 62 of 1966) Part III Plumbing Soil fitments and waste fitments 11. Disposal of soil All soil shall be properly conducted, by means of suitable soil pipes, to drains provided for the carriage of foul water.(G.N.A. 107 of 1959) 12. Waste pipes (1) Save as provided in paragraphs (2) and (3) waste pipes shall discharge in the open air—(a) over or into a suitable channel within 1 m of a properly trapped gully; (L.N. 294 of 1976)(b) into a gully, above the level of the water therein; or(c) into a suitable hopper head.(2) Waste pipes from lavatory basins may discharge—(a) into a suitable drainage channel immediately below the lavatory basins, if such drainage channel discharges into a trapped gully; or(b) into a common waste pipe, if the common waste pipe discharges through a trap and has adequate means of access for cleaning.(3) Subject to the provisions of regulation 25(3), waste pipes may be connected to a soil pipe. 13. Materials for soil fitments Every soil fitment shall be constructed of glazed earthenware, enamelled fire clay or other approved material. 14. Construction of watercloset fitments (1) Every watercloset fitment, other than a squatting type fitment, shall be of such shape, capacity and mode of construction as to retain a sufficient quantity of water and to receive normal deposits of excrement into such water without undue soiling of the sides of the fitment.(2) Every watercloset fitment, other than a squatting type fitment, shall be provided with a hinged seat or a suitable seat rim or inset.(L.N. 361 of 1980) 15. Construction of trough waterclosets The channel of a trough watercloset shall be not longer than 5 m and shall have an even fall towards the outlet trap of not less than 1 in 30.(L.N. 294 of 1976) 16. Construction of urinal channels The channels of every stall and trough urinal shall have an even fall towards the outlet trap of not less than 1 in 120 and no part of any such channel shall be more than 6 m from the trap to which it discharges.(L.N. 294 of 1976) 17. Flushing water supply (1) A system of plumbing shall be provided for the supply of water for flushing purposes to every watercloset fitment, trough watercloset, urinal and slop sink.(2) Every part of any such system of plumbing (including any storage tank for water solely for flushing purposes) shall be constructed of material that is suitable for use with salt water. (L.N. 113 of 1964) 18. Flushing rim Every watercloset fitment, bidet, basin-type urinal and slop sink shall be provided with a suitable flushing rim for the effectual flushing of the fitting. 19. Flushing cisterns (1) Save as provided in regulation 20, every watercloset fitment, trough watercloset, urinal and slop sink shall be provided with a flushing cistern.(2) Such flushing cistern shall—(a) in the case of watercloset fitments and slop sinks—(i) discharge to the watercloset fitment of slop sink, on each occasion such fitment is used, not less than 9 L and not more than 14 L of water; and(ii) be provided with a ball valve so arranged as to re-fill the cistern within 2 minutes;(b) in the case of trough waterclosets, be fitted with automatic discharging apparatus so arranged as to discharge—(i) at the highest point of the channel;(ii) at such intervals as may be necessary of ensure adequate cleaning of the closet, not less than 9 L of water for every metre of the channel;(c) in the case of urinals, be fitted with automatic discharging apparatus so arranged as to discharge—(i) into every basin or stall or, in the case of a trough urinal, every metre thereof;(ii) at such intervals as may be necessary to ensure adequate cleaning of the urinal,not less than 4.5 L of water. (L.N. 294 of 1976; E.R. 3 of 2020) 20. Pressure valves Save in the case of trough waterclosets and urinals, pressure valves may, where there is a suitable head of water, be installed for flushing purposes without the provision of a flushing cistern. 21. Flushing pipes The internal diameter of flushing pipes shall—(a) in the case of watercloset fitments, trough waterclosets and slop sinks, be not less than 32 mm;(b) in the case of urinals (other than trough urinals), be not less than 15 mm for each basin or stall; and(c) in the case of trough urinals, be not less than 15 mm for every metre thereof.(L.N. 294 of 1976) 22. Storage tanks for flushing water (1) Storage tanks for water solely for flushing purposes shall be provided in every building in which watercloset fitments, trough waterclosets, urinals or slop sinks are installed.(2) Every such tank shall—(a) at a position above the level of the highest fitment or on a suitable water tower;(b) fitted with a suitable close fitting cover; and(c) provided with adequate access to enable the tank to be entered and cleaned. 23. Overflow pipes (1) Every flushing cistern and water storage tank shall be provided with an overflow pipe.(2) The overflow pipe from a water storage tank shall—(a) have an internal diameter of one commercial size larger than the supply pipe to the cistern or tank; (L.N. 361 of 1980)(b) dip down, inside the tank, so as to terminate in a position not more than 150 mm above the bottom of the tank; and (L.N. 294 of 1976)(c) discharge in a conspicuous position. 24. Traps for soil fitments (1) Every soil fitment shall be provided with a suitable trap with a water seal of not less than 50 mm.(2) The internal diameter of every such trap shall be not less than—(a) 80 mm, in the case of a watercloset fitment, slop sink, or urinal with more than 3 basins or stalls or with a channel longer than 2 m;(b) 50 mm, in the case of a urinal with more than one and not more than 3 basins or stalls or with a channel not longer than 2 m;(c) 40 mm, in the case of a bidet or urinal with a single basin or stall; and(d) 100 mm, in the case of a trough watercloset.(L.N. 294 of 1976) 25. Traps for waste fitments (1) Every waste fitment shall be provided immediately under the fitment with a suitable trap:Provided that a trap shall not be required—(a) where the waste pipe from such fitment—(i) does not exceed 1 m in length; and(ii) discharges over or into a suitable trapped gully;(b) in respect of lavatory basins, where the waste pipes therefrom discharge in the manner provided by regulation 12(2);(c) in respect of a range of shower baths, where the drainage channel provided therefor is provided, at its lowest point, with a trap.(2) Save as provided in paragraph (3), every trap provided for a waste fitment shall have—(a) an internal diameter of not less than 32 mm; and(b) a water seal of not less than 40 mm.(3) Where the waste pipe from a waste fitment is, under the provisions of regulation 12(3), connected to a soil pipe, the trap provided for the waste fitment shall—(a) have an internal diameter of not less than 32 mm;(b) have a water seal of not less than 80 mm; and(c) be—(i) adequately ventilated; or(ii) constructed to prevent loss of water seal.(L.N. 294 of 1976)Pipes and eaves gutters 26. Soil pipes (1) The internal diameter of every soil pipe from a watercloset fitment or slop sink shall be not less than—(a) 80 mm; or (L.N. 294 of 1976)(b) the internal diameter of the outlet pipe of the trap of any fitment to which the soil pipe is connected,whichever is the greater.(2) The internal diameter of every soil pipe from a urinal or bidet shall be not less than the internal diameter of the outlet pipe of the trap of any fitment to which the soil pipe is connected.(3) Every soil pipe shall be properly connected to a covered drain without the intervention of any trap. 27. Waste pipes (1) Waste pipes to which the waste from one waste fitment is discharged shall have an internal diameter of not less than— (E.R. 3 of 2020)(a) 32 mm; or (L.N. 294 of 1976)(b) the internal diameter of the outlet of the trap to which the waste pipe is connected,whichever is the greater.(2) Waste pipes to which the waste from more than one fitment is discharged shall be of adequate diameter to convey all such waste.(3) Every waste pipe shall terminate at its lower end not more than 150 mm above the channel or trapped gully over or into which it discharges. (L.N. 294 of 1976) 28.

Bends in soil and waste pipes (1) Soil pipes and waste pipes shall not have bends therein, except where unavoidable.(2) Whenever a bend is unavoidable—(a) the bend shall—(i) have an obtuse angle;(ii) have the largest practicable radius of curvature; and(iii) not change in any way the cross section of the pipe; and(b) a cleaning eye or other suitable means of access shall be provided at or near the bend. 29. Access to soil and waste pipes (1) Sufficient access shall be provided, by means of cleaning eyes or other approved method, to enable soil pipes and waste pipes to be cleared of any obstruction.(2) Such access points shall be so sited as to allow clearance for the easy entry of cleaning rods. 30. Anti-syphonage pipes (1) Where—(a) more than one trap of a watercloset fitment, urinal, slop sink or waste fitment is connected with one soil pipe; or(b) more than one trap of a waste fitment is connected with one waste pipe,the traps shall be ventilated by means of anti-syphonage pipes:Provided that if, in the case of waste fitments, the traps to such fitments are constructed to prevent loss of water seal, it shall not be necessary to provide an anti-syphonage pipe, unless the Building Authority so requires.(2) Every anti-syphonage pipe shall be connected with—(a) the trap, if the connexion with the anti-syphonage pipe is an integral part of the trap; or(b) the branch soil pipe or branch waste pipe—(i) on the side of the water seal nearest the main soil pipe or waste pipe; and(ii) at a point not more than 300 mm from the trap outlet. (L.N. 294 of 1976)(3) The internal diameter of every anti-syphonage pipe shall—(a) if the diameter of the soil pipe or waste pipe to which it is connected is 80 mm or more, be not less than 50 mm;(b) if the diameter of such soil pipe or waste pipe is less than 80 mm, be not less than—(i) two-thirds of the internal diameter of such soil pipe or waste pipe; or(ii) 32 mm,whichever is the greater. (L.N. 294 of 1976)(4) (a) The main anti-syphonage pipe may be connected to a soil pipe which, under regulation 31(3), is acting as a ventilating pipe.(b) Every such connexion shall be made at a point above the flood level of the highest fitment connected to the soil pipe. (E.R. 3 of 2020) 31. Ventilating pipes (1) Every ventilating pipe for any drain or sewer shall be carried up to a height not less than 1 m above the roof of the building to which it is fixed or, where such building has a pitched roof, above the eaves of such building. (L.N. 294 of 1976)(2) No ventilating pipe shall be so fixed as to permit the escape of foul air from any drain, sewer, soil pipe or waste pipe into any building.(3) Soil pipes or waste pipes may be carried up to a suitable height above the building to which they are fixed to act as ventilating pipes for any drain or sewer.(4) The internal diameter of every ventilating pipe and of every soil pipe or waste pipe which, under paragraph (3), is acting as a ventilating pipe, shall be not less than 80 mm. (L.N. 294 of 1976)(5) The open end of every ventilating pipe shall be provided with a suitable grating having apertures of an aggregate area not less than the sectional area of the pipe.(6) Ventilating pipes shall not be used for the carriage of surface water. 32. Rain water pipes (1) (a) Every rain water pipe which discharges to a drain which is connected to a public sewer provided for the carriage of surface water shall—(i) in the case of a rain water pipe situated outside a building, discharge either not more than 150 mm above the level of the ground over a suitably trapped gully or into a trapped gully below the level of the grating but above the level of the water in the trap; and(ii) in the case of a rain water pipe situated inside a building (other than a rain water pipe used solely for the conveyance of rain water from a roof), be properly trapped with an efficient trap which shall be so formed and fixed as to maintain a water seal of not less than 75 mm. (L.N. 62 of 1966; L.N. 361 of 1980)(b) Every rain water pipe which discharges to a channel shall discharge at a height not more than 150 mm above the level of the top of the channel.(c) Every rain water pipe which discharges, through a cast iron conductor, to the side channel in a street shall be provided, at the foot thereof, with a shoe so as to ensure that any surface water discharged from the pipe will discharge directly into the conductor.(2) The number and size of rain water pipes provided for any building shall be calculated at the rate of 700 mm2 of pipe to every 10 m2 of horizontal roofed-over surface.(3) Save as provided in regulation 33, the diameter of every rain water pipe shall be not less than 65 mm.(4) Rain water pipes shall not be connected with any soil pipe, waste pipe or ventilating pipe.(5) Where a rain water pipe discharges, across any footpath, to the side channel of a street, it shall discharge through a cast iron conductor.(L.N. 294 of 1976) 33. Rain water pipes for verandahs or balconies (1) Any rain water pipe provided for the carriage of surface water from a verandah or balcony shall, where there is, at a suitable position, a rain water pipe provided for the carriage of surface water from the roof of the building, be connected to such pipe.(2) Where a rain water pipe provided for the carriage of surface water from a verandah or balcony discharges to the side channel in a street or is, in accordance with paragraph (1), connected to a rain water pipe which so discharges, the internal diameter of the rain water pipe from the verandah or balcony shall be not more than 40 mm. (L.N. 294 of 1976) 34. Materials for pipes (1) Every soil pipe, waste pipe, anti-syphonage pipe, ventilating pipe, overflow pipe and every pipe connected with any drain provided for the carriage of foul water shall be—(a) circular in shape; and(b) constructed of cast iron, steel, copper or other approved material.(2) Every rain water pipe shall be constructed of cast iron, copper or other approved material. (L.N. 295 of 1986)(3) All such materials shall be sound and free from defects. 35. Connexions of pipes, etc. Every connexion of a soil pipe, waste pipe, anti-syphonage pipe, ventilating pipe, rain water pipe or overflow pipe with any other pipe, or with a trap, gutter or other fitting, as the case may be, shall be made in a manner suitable to the nature of the materials of which such pipe and such other pipe or trap, gutter or other fitting are constructed, and so as to be watertight. (G.N.A. 107 of 1959) 36. Fixing of pipes (1) Every soil pipe, waste pipe and rain water pipe shall be securely fixed to the wall of the building for which it is provided.(2) Any hole which is made in any floor or wall in order to admit any such pipe shall be properly filled in and sealed round the pipe. 37. Pipes in ducts Where a soil pipe, waste pipe, anti-syphonage pipe, ventilating pipe, or rain water pipe is fixed in a duct within a building, access panels shall be provided of such size and so situated that adequate access is available to all pipe connexions within the duct. 38. Eaves gutters (1) Eaves gutters shall be—(a) made of cast iron or other approved material;(b) fixed at a gradient not less than 1 in 100; and(c) properly connected to rain water pipes.(2) The size of eaves gutters shall be calculated at the rate of 700 mm2 of cross sectional area of gutter to every 7 m2 of horizontal roofed-over surface. (L.N. 294 of 1976) 38A. British Standard Specification and other national standards The Building Authority may permit, in writing and subject to such conditions as he may endorse thereon, the use of materials or the carrying out of any works that are subject to this Part in accordance with a relevant British Standard Specification, British Standard Code of Practice or other national standard accepted by the Building Authority and that prescribes the quality of material or standards of workmanship.(L.N. 361 of 1980) Part IV Drainage Works 39. Drainage of buildings Every building shall be provided with such pipes, drains and channels as are necessary for the disposal of all foul water and surface water from the building. 40. Disposal of foul water (1) Drains and private sewers, provided for the carriage of foul water, shall, where there is a public sewer provided for the carriage of foul water at a suitable level and position within 30 m of the boundary of the lot on which the building, for which such drains or private sewers are provided, is erected, be connected to such public sewer. (L.N. 294 of 1976)(2) Where there is no such public sewer, the Building Authority may, by order in writing, require the owner of any building to provide a septic tank, a cesspool or other approved facility. (L.N. 361 of 1980) 41. Disposal of surface water (1) Save as provided in paragraph (2), all surface water from a building shall, if there is a public sewer, provided for the carriage of surface water, at a suitable level and position within 30 m of the building, be conducted, by means of rain water pipes and drains provided for the carriage of surface water, to such public sewer or, where there is no such public sewer, shall be conducted, to the satisfaction of the Building Authority, to a public channel provided for the carriage of surface water or to the side channel in a street. (L.N. 294 of 1976)(2) Where there is no such public sewer and no public channel or side channel in a street, such surface water shall be conducted, to the satisfaction of the Building Authority, to a stream course or nullah. 42. Pipes carrying surface water not to discharge across surface of footpath No pipe provided for the carriage of surface water from a building shall discharge across the surface of any footpath in a street. 43. Disposal of sub-soil water Drains provided for the carriage of sub-soil water may be connected to a private or public sewer provided for the carriage of surface water or to a drain provided therefor. 44. Materials for drains, etc. (1) Covered drains (except covered drains provided for the carriage of sub-soil water) and covered sewers shall be made with good sound pipes of glazed earthenware, stone ware, concrete, cast iron or other approved material.(2) Drains and sewers above the ground shall be laid with cast iron pipes or other approved materials. (L.N. 361 of 1980)(3) All pipes used in the construction of any drain or sewer shall—(a) be of true bore;(b) have smooth internal surfaces; and(c) be impervious.(4) Cast iron sewage pipes shall be protected against rust and corrosion by a suitable asphaltic coating.(5) Earthenware, stone ware and concrete pipes shall—(a) in the case of pipes with a diameter not exceeding 150 mm, have a thickness equal to not less than one-ninth of the diameter of the pipe; and(b) in the case of pipes with a diameter exceeding 150 mm, have a thickness equal to not less than one-twelfth of the diameter of the pipe. (L.N. 294 of 1976) 45. Sub-soil water drains Drains provided for the carriage of sub-soil water shall be constructed with clay field pipes or other suitable pipes and shall be laid to adequate falls. 46. Size of drains All drains and sewers shall be of adequate, but not excessive, size for the purpose for which they are provided:Provided that no covered drain shall have an internal diameter of less than 100 mm.(L.N. 294 of 1976) 47. Laying of drains and sewers (1) All drains and sewers (except drains provided for the carriage of sub-soil water) and traps shall be firmly laid on a bed of concrete not less than 100 mm in thickness and at least 150 mm wider than the diameter of the pipe or trap, and shall be haunched with concrete so that the full width of the bed is carried up to the level of the horizontal diameter of the pipe and from that point splayed up on both sides of the pipe from the full width of the bed to meet the pipe barrel tangentially. (L.N. 294 of 1976)(2) All drains and sewers shall be supported along the full length of the barrels and not by the sockets.(3) Where any drain or sewer is laid in soft and yielding ground—(a) adequate support shall be provided for such drain or sewer; and(b) save where the same are provided for the carriage of sub-soil water, the pipes shall be completely surrounded by at least 100 mm of concrete. (L.N. 294 of 1976)(4) Cast iron pipes above the ground may be carried on adequate piers or other sufficient supports, if such support is provided at each joint. 47A. Drains and sewers in gathering grounds to be watertight (1) Every drain or sewer provided for the carriage of foul water from any building which lies within a gathering ground shall be watertight and shall—(a) be laid in pipes of cast iron or other approved material and be of such design and construction as to be capable of resisting the pressure to which it is likely to be subjected;(b) have any hatch box constructed on the drain or sewer so that the hatch box is capable of resisting the pressure to which it is likely to be subjected; and(c) have every joint in the drain or sewer made in lead, or other approved material so as to render the drain or sewer capable of resisting the pressure to which the drain or sewer is likely to be subjected.(2) Every joint in a drain or sewer referred to in paragraph (1) shall be made by bolting the flanges together securely with suitable metallic or asbestos gaskets or shall be of such other approved construction so as to render the drain or sewer capable of resisting the pressures to which the drain or sewer is likely to be subjected.(3) Hatch boxes shall be provided to a drain or sewer referred to in paragraph (1)—(a) at intervals not exceeding 30 m in the drain or sewer;(b) at changes of gradient, if the Building Authority so requires; and(c) at every change in direction in the drain or sewer:Provided that no hatch box is required where the change in direction does not exceed 10o and is made by means of a purpose-made bend.(4) Notwithstanding paragraph (3), not more than one manhole shall be permitted in each drain or sewer.(5) Every hatch box shall be constructed of cast iron or other approved material and shall have a hatch or door securely bolted at the top thereof.(6) In this regulation—gathering ground (集水區) has the same meaning as in the Waterworks Ordinance (Cap. 102);hatch box (檢查箱) means a chamber of such a size and form as readily allows inspection and testing of the drain or sewer on which it is constructed and the clearance of obstructions from the drain or sewer.(L.N. 361 of 1980) 48. Falls of drains Every drain or private sewer shall be laid with a minimum fall from its highest inlet to its connexion with a public sewer or other outlet in accordance with Table 29. Table 29 Diameter of pipe Fall 100 mm 1 in 40 150 mm 1 in 70 225 mm 1 in 100 300 mm 1 in 150 (L.N. 294 of 1976; L.N. 191 of 2015) 49. Junction of drains (1) The junction of a single branch drain with another drain at an angle of not more than 45o in the direction of flow may be made by means of a purpose-made Y junction. (2) The junction of every other branch drain with another drain shall be made within a manhole, obliquely at an angle of not more than 60o in the direction of flow of such other drain, and shall be above the invert of such other drain. 50. Joints (1) Every joint in a drain or sewer shall be made in a proper and efficient manner so as to render the drain or sewer watertight and capable of resisting a pressure of a head of water of—(a) 1.5 m; or (L.N. 294 of 1976)(b) the vertical distance between the invert level of the pipe joint and the level of the top of the manhole immediately preceding the joint,whichever is the greater, and no material forming any such joint shall project into the interior of any pipe in such manner as to cause any obstruction in the drain or sewer. (L.N. 361 of 1980) (2) The joints of cast iron socketed pipes shall be made with a gasket of hemp or yarn, and shall be properly caulked with metallic lead or other approved material.(3) The joints of cast iron flanged pipes shall be made by bolting the flanges together securely with a suitable metallic or asbestos gasket.(4) The joints of earthenware, stone ware or concrete pipes shall be made with a gasket of hemp or yarn, and cement mortar or other approved material. 51. Inlets to drains (1) Subject to paragraph (2), every inlet to a drain or sewer shall be properly trapped by an efficient trap, which shall be so formed and fixed as to maintain a water seal of not less than 75 mm.(2) Paragraph (1) shall not apply—(a) to an inlet for a soil pipe or a ventilating pipe;(b) to an inlet for the carriage of any trade effluent;(c) where no other means of connexion is practicable; or(d) to an inlet to a drain used solely for the conveyance of rain water from a roof.(L.N. 361 of 1980) 52. Ventilation (1) Every drain provided for the carriage of foul water shall be ventilated at its highest point by means of a ventilating pipe having an internal diameter of not less than 50 mm. (L.N. 294 of 1976)(2) Every manhole in which a disconnecting trap is fixed shall be adequately ventilated.(3) Branch drains shall be ventilated at their highest point, if the Building Authority so requires. 53. No traps between ventilated points No trap or other obstruction to the free circulation of air shall be placed between the ventilation openings at the lower and higher ends of any drain or sewer. 54. Drains and sewers under buildings, etc. (1) All drains and sewers under a building shall be laid in straight lines and shall be laid with cast iron sewage pipes.(2) Where any drain or sewer is laid through any building, or where any building is constructed over any drain or sewer, relieving arches or beams shall be provided to protect such drain or sewer and to prevent any load from the building being transmitted to such drain or sewer. 55. Manholes and cleaning eyes to be provided (1) Manholes shall be provided—(a) at every change in direction in any drain or sewer except where—(i) the change in direction does not exceed 45°;(ii) the internal radius of the bend is not less than 6 times the internal diameter of the drain or sewer; and(iii) the change in direction is made by means of a purpose-made pipe; and(b) at changes of gradient, if the Building Authority so requires.(2) Manholes or cleaning eyes shall be provided at intervals not exceeding 60 m in every drain and sewer. (L.N. 294 of 1976) 56. Construction of manholes (1) Every manhole shall be of such size and form as to allow ready access for rodding and shall be constructed of—(a) brickwork in cement mortar at least 215 mm in thickness;(b) concrete at least 125 mm in thickness; or (L.N. 439 of 1990)(c) other approved impervious material. (L.N. 294 of 1976)(2) The foundation of every manhole shall be constructed of concrete not less than 150 mm in thickness. (L.N. 294 of 1976)(3) Benchings shall be formed above the level of every drainage channel in a manhole to fall towards such channel at a gradient of 1 in 2.(4) The benchings and all the internal faces of every manhole shall be rendered with cement mortar so as to provide a smooth and impervious surface.(5) Every drainage channel in a manhole shall be not less than half round glazed earthenware or cement rendered, and shall have a diameter not less than that of the largest drainage inlet into and not more than that of the outlet from the manhole.(6) Every drainage inlet to a manhole shall discharge into the drainage channel therein with properly made bends constructed within the benching of the manhole.(7) Every manhole shall be fitted, on a level with the ground surface, with a cast iron airtight cover of adequate strength and approved design:Provided that every manhole inside or under a building shall be fitted with a double-sealed cast iron airtight cover. (L.N. 361 of 1980) 57. Disconnecting traps (1) A suitable and efficient disconnecting trap shall be provided for every drain and sewer provided for the carriage of foul water, and for every drain and sewer provided for the carriage of surface water except where such drain or sewer is connected to a stream course or an open nullah.(2) Except under and in accordance with a permit issued under the Land (Miscellaneous Provisions) Ordinance (Cap. 28) to occupy Government land thereby, every such trap and the manhole in which it is fixed shall be situated on land owned by the owner or owners of the building or buildings for which the drain or sewer is provided, at a position as near as practicable to the place at which such drain or sewer is connected to a public sewer or, in the case of a drain or sewer, provided for the carriage of surface water, which is connected to a covered nullah, at a position as near as practicable to the nullah. (L.N. 361 of 1980; 29 of 1998 s. 29)(3) Every such trap shall be—(a) fixed within a manhole;(b) so formed and fixed as to have a water seal of not less than 75 mm; and (L.N. 294 of 1976)(c) provided, as an integral part of the trap, with a cleaning eye. 58. Gullies (1) Open trapped gullies shall be covered with a suitable grating having openings equal to an area not less than the cross sectional area of the outlet of the trap.(2) Where sealed trapped gullies are used, adequate provision shall be made for the ventilation of the space above the water level of the trap. 59. Cleaning eyes Every cleaning eye shall be—(a) fitted with a cover, in order to make the cleaning eye airtight and watertight; and(b) of such size as to allow easy entry for cleaning rods. 60. Filling in of drainage trenches (1) All trenches in which drains or sewers have been laid shall be carefully filled in, around and above the drains or sewers, with earth which shall be carefully rammed and consolidated.(2) No stones or other material which will not pass through a 50 mm ring shall be deposited in any such trench within 300 mm of the top of any drain or sewer. (L.N. 294 of 1976) 61. Surface water channels (1) Channels provided for the carriage of surface water shall be of adequate size, constructed of approved impervious material, finished off smooth and laid to a gradient of not less than 1 in 100.(2) Suitable grilles shall be provided to prevent sand, silt and other debris from entering any public sewer, public channel, nullah or stream course.(3) A cover in a foot-path to a channel for the carriage of surface water shall be flush with the path surface and any hole in such cover or between such cover and another shall not exceed 20 mm in one dimension. (L.N. 366 of 1984) Part V Septic Tanks 62. Disposal of effluent (1) The owner of any building who is about to install a septic tank shall submit to the Building Authority for his approval the methods by which it is intended to dispose of the effluent and sludge from the septic tank.(2) The Building Authority shall not give his approval thereof if, in his opinion, the method or methods proposed is or are likely to cause a nuisance or injury to health.(L.N. 361 of 1980) 63. Situation of septic tank (1) No septic tank shall be situated within 18 m of any spring, stream of water or well, the water from which is used or likely to be used for drinking or domestic purposes or for the manufacture or preparation of articles of food or drink for human consumption or for the cleansing of vessels used in the manufacture or preparation of such articles. (L.N. 294 of 1976)(2) Every septic tank shall be so situated that the removal of sludge can be carried out by an approved method.(L.N. 361 of 1980) 64. Design Save insofar as provision is made therefor in these regulations, every septic tank together with any ancillary installation for the disposal of septic tank effluent shall be of such design as the Building Authority may approve.(L.N. 361 of 1980) 65. Capacity (1) Every septic tank shall have such minimum capacity as shall be determined by the Building Authority in the manner prescribed by paragraph (2):Provided that no septic tank shall have a capacity of less than 2.3 m3 or more than 41 m3. (L.N. 294 of 1976)(2) (a) The septic tank shall be of such capacity as to be capable of storing the quantity of soil and waste discharged thereto during any one day.(b) The quantity of soil and waste discharged shall be calculated according to the rate of consumption of potable and flushing water which, in the opinion of the Building Authority, is appropriate to the type, size and use of the building. (L.N. 361 of 1980)(3) For the purposes of this regulation, the number of persons using or likely to use the soil and waste fitments installed in any building shall be determined by the Building Authority.(L.N. 361 of 1980) 66. Construction (1) Every septic tank shall—(a) have a depth of at least 1.2 m but not more than 1.8 m from the invert of the inlet to the floor of the tank;(b) have a length not less than 3 times but not more than 4 times its width;(c) be provided with adequate means of access for the inspection and cleansing of each chamber. (L.N. 361 of 1980)(2) The sides of every septic tank shall be constructed of—(a) brickwork in cement mortar not less than 215 mm thick;(b) concrete not less than 125 mm thick; or (L.N. 439 of 1990)(c) other approved material.(3) The foundation and floor of every septic tank shall be constructed of concrete not less than 150 mm thick. (L.N. 439 of 1990)(4) All internal faces (including the floor) of every septic tank shall be—(a) rendered in cement mortar; or(b) faced with other approved material,so as to provide a smooth, impervious surface.(L.N. 294 of 1976) 67. Dip pipes The inlet to and the outlet from every septic tank shall be by means of dip pipes of such depth as to avoid disturbance of the top scum. 68. Ventilation In every septic tank the space between the top of the water level and the underside of the cover shall be—(a) adequately ventilated; or(b) provided with adequate means for drawing off gases. Part VI Cesspools 69. Situation of cesspools No cesspool shall be situated—(a) within 20 m of any spring, stream of water or well, the water from which is used, or likely to be used, for drinking or domestic purposes or for the manufacture or preparation of articles of food or drink for human consumption or for the cleansing of vessels used in the manufacture or the preparation of such articles; or (b) within 15 m of any building in which any person resides or works. (L.N. 294 of 1976) 70. Disposal of contents Every cesspool shall be so situated that there shall be adequate means for removing its contents without carrying them through any building in which any person resides or works. 71. Capacity (1) Every cesspool shall have such minimum capacity as shall be determined by the Building Authority in the manner prescribed by paragraph (2).(2) (a) The cesspool shall be of such capacity as to be capable of storing the quantity of soil and waste discharged thereto during a period of one month.(b) The quantity of soil and waste discharged shall be calculated at the rate of 135 L thereof for each day for each person using or likely to use the soil fitments or waste fitments installed in the building for which the cesspool is provided. (L.N. 294 of 1976; E.R. 3 of 2020)(3) For the purposes of this regulation, the number of persons using or likely to use the soil fitments or waste fitments installed in any building shall be determined by the Building Authority. 72. Construction (1) Every cesspool shall be—(a) constructed of—(i) brickwork in cement mortar;(ii) concrete; or (L.N. 439 of 1990)(iii) other approved material;(b) so constructed and finished as to be impervious to liquid either from the inside or the outside;(c) covered with a reinforced concrete cover;(d) provided with adequate access for cleaning purposes; and(e) adequately ventilated.(2) The internal faces of every cesspool shall be rendered with cement mortar. Part VII Testing of Drainage Works 73. Testing of drainage works and procedure thereupon (1) The registered general building contractor or the registered specialist contractor appointed in respect of any drainage works shall, on the completion of such works, but before any trenches in which drains or sewers have been laid are filled in, apply, in writing, to the Building Authority for such works to be tested.(2) On such application the Building Authority may inspect and test the drainage works and shall—(a) if he is satisfied with the result of such test, notify the registered general building contractor or the registered specialist contractor appointed in respect thereof accordingly; or(b) if he is not so satisfied, order such work to be carried out as may be necessary to cause such works to comply with these regulations.(3) An order made under paragraph (2)(b) shall be in writing and shall specify—(a) the work to be carried out; and(b) the period of time within which such work must be carried out.(4) After the expiry of the period specified in any such order, the Building Authority shall again inspect and test the drainage works and, where, by reason of any failure to comply with such order, more than one further inspection and test is necessary, shall inspect and test such works such number of times as may be necessary and, when he is satisfied with the results of any test, shall notify the registered general building contractor or the registered specialist contractor appointed in respect of such works accordingly.(5) In respect of every inspection and test made in accordance with the provisions of paragraph (4), the registered general building contractor or the registered specialist contractor appointed in respect of the drainage works shall pay the prescribed fee. (6) If the Building Authority does not test any drainage work within 4 days of the receipt of an application therefor under paragraph (1), the trenches in which any drains and sewers have been laid may be filled in.(L.N. 516 of 1997) 74. Power of Building Authority to require drainage trenches to be opened Save where a trench in which drains or sewers have been laid is filled in pursuant to the provisions of regulation 73(6), if a trench in which drains or sewers have been laid is filled in before the Building Authority has, under regulation 73, notified the registered general building contractor or the registered specialist contractor appointed in respect of the drainage works that he is satisfied with the result of a test, the Building Authority may require such registered general building contractor or the registered specialist contractor to open and uncover the drainage works in order to enable him to carry out an inspection and test.(L.N. 516 of 1997) Part VIII Certain Work to be Carried Out by the Building Authority and Recovery of Cost thereof 75. Building Authority required to make every connexion of drain and private sewer to public sewer or nullah and recovery of cost thereof (1) The connexion of every drain or private sewer to a public sewer or nullah shall be made by the Building Authority who may recover the cost thereof as provided in paragraph (3).(2) The Building Authority shall not make any such connexion until he is satisfied that the drainage work, of which such drain or private sewer forms part, have been carried out in accordance with the provisions of the Ordinance and regulations made thereunder.(3) (a) Where a drain is so connected to a public sewer, the Building Authority may recover the cost of making the connexion from the owner of the building for which the drain is provided.(b) Where a private sewer is so connected to a public sewer, the Building Authority—(i) may, where the buildings for which the private sewer is provided are owned by the same person, recover the cost of making the connexion from such person; or(ii) shall, where such buildings are owned by different persons, apportion the cost of making the connexion equally among such persons and may recover from each of such persons his portion of the cost. 76. Building Authority required to fix every disconnecting trap, etc. and recovery of cost (1) Every disconnecting trap, required, by regulation 57, to be provided, shall be fixed, and the manhole in which such trap is fixed shall be constructed, by the Building Authority who may recover the cost of such work as provided in paragraph (2).(2) (a) Where the trap and manhole so fixed and constructed, respectively, are provided for a drain, the Building Authority may recover the cost thereof from the owner of the building for which such drain is provided.(b) Where the trap and manhole so fixed and constructed, respectively, are provided for a private sewer, the Building Authority—(i) may, where the buildings for which the private sewer is provided are owned by the same person, recover the cost thereof from such person; or (E.R. 3 of 2020)(ii) shall, where such buildings are owned by different persons, apportion the cost thereof equally among such persons and may recover from each of such persons his portion of the cost. 77. Building Authority required to carry out any work to be carried out on unleased Government land Without prejudice to the provisions of regulations 75 and 76, where, in order to comply with these regulations, any work has to be carried out on unleased Government land, the work shall be carried out by the Building Authority who may recover the cost of the work from the person for whom it is carried out.(29 of 1998 s. 30) 78. Powers of Building Authority in event of contravention of regulations Where, in contravention of regulation 75, 76 or 77, any work has been carried out otherwise than by the Building Authority the Building Authority may demolish, remove or alter such work and may carry out such other work as he considers necessary and may recover the cost of such work, in accordance with the provisions of regulation 75, 76 or 77, as the case may be, as if such work had been carried out pursuant to the provisions of such regulation. Part IX Latrines 79. Interpretation In the regulations in this Part, open air (露天地方) means a space which—(a) is vertically uncovered and unobstructed;(b) is not less, in any dimension, than 1.5 m; and(c) where such space is enclosed on four sides, has a horizontal area of not less than 1 m2 for every 6 m of the mean height of the walls enclosing the space.(L.N. 294 of 1976) 80. Latrines be provided with doors Every latrine, except a latrine fitted with a chemical closet fitment, shall be provided with a self-closing door to the full height of the opening. 81. Doors to open into open air, etc. (1) Save as provided in paragraph (2), the door of every latrine shall open directly into the open air.(2) Where the latrine fitment in any latrine is a chemical closet fitment, the door of the latrine need not open into the open air, but shall not open into any room used or intended to be used for the manufacture, preparation or storage of food for human consumption. 82. Lighting and ventilation (1) Every latrine shall be provided with an opening for light and ventilation.(2) Every such opening shall—(a) be such that the part thereof which is permanently open or designed to open, as the case may be, is not less in area than 0.2 m2 ; (L.N. 294 of 1976)(b) be situated as near the ceiling of the latrine as practicable;(c) communicate directly with the open air; and(d) be covered with a metal or other approved mesh flyscreen. 83. Floors The floor of every latrine shall be not less than 150 mm above the level of the ground outside the latrine and shall—(a) be constructed of non-absorbent material and finished with a smooth surface; and(b) have a fall towards an outlet of not less than 1:25, save that, in the case of a latrine designed for a squatting type latrine fitment, the surface surrounding the aperture to the receptacle for excrement shall have a fall towards the aperture of not less than 1:10.(L.N. 294 of 1976) 84. Internal surfaces The internal surfaces of every latrine shall be—(a) faced with tiles; or(b) rendered in—(i) cement mortar, not less than 12.5 mm thick; or(ii) other non-absorbent material,to a height of not less than 1.2 m from the level of the floor of the latrine.(L.N. 294 of 1976) 85. Walls of and access to latrine fitments In every latrine fitment—(a) the walls of the space in which the receptacle for excrement is placed shall, except the opening provided, in accordance with subparagraph (b), to give access to such space, be constructed of non-absorbent material; and(b) adequate access, which shall be so covered as to prevent flies from entering the space, shall be provided to enable the space in which the receptacle for excrement is placed to be cleaned and to enable such receptacle to be placed in the fitment and removed therefrom. 86. Design and construction of latrine fitment in relation to receptacle for excrement Every latrine fitment shall be so designed and constructed that, when the receptacle for excrement is placed therein, it is retained in such a position as to prevent, so far as possible, the deposit of excrement elsewhere than in the receptacle. 87. Receptacles for excrement The receptacle for excrement shall be—(a) constructed of galvanized metal or other non-absorbent material;(b) so constructed as to prevent the escape, by leakage or in any other way, of its contents; and(c) have a capacity not exceeding 50 L. (L.N. 294 of 1976; E.R. 3 of 2020) 88. Power of Building Authority to permit door of latrine to open onto or opening required by regulation 82 to communicate with unenclosed verandah, etc. (1) Subject to the provisions of paragraph (2), the Building Authority may, where he thinks fit, permit the door of a latrine not fitted with a chemical closet fitment or the opening required by regulation 82, to open onto or communicate with, as the case may be, an unenclosed verandah or balcony or any other unenclosed space, if such verandah, balcony or other space—(a) in the case of the door of a latrine, opens directly to the open air; and(b) in the case of the opening required by regulation 82, communicates with the open air,and, in any such case, such door or opening shall, for the purposes of regulations 81 and 82, respectively, be deemed to open directly into or communicate with the open air.(2) The Building Authority shall not give his permission under this regulation unless he is satisfied that to do so will not be to the prejudice of the standard of lighting or ventilation or the health of the occupiers of the building for which the latrine is provided. Part X Miscellaneous 89. Power of Building Authority to prohibit installation of soil fitments In any case where he considers that the drains or private sewers or other means provided for the disposal of soil from any building are unsatisfactory, the Building Authority may, by order in writing, prohibit the installation of soil fitments in the building. 90. Power of Building Authority to require provision of neutralizing tanks, etc. Where, from any building it is intended to discharge, or there may be discharged, into any drain or sewer—(a) any trade effluent;(b) any chemical refuse or waste steam or any liquid of a temperature higher than 40oC being refuse or steam which, or a liquid which when so heated, is either alone or in combination with the contents of a drain or sewer, dangerous, or the cause of a nuisance, or prejudicial to health; (L.N. 294 of 1976)(c) any petroleum spirit, carbide of calcium, acid, grease or oil; or(d) any matter likely to injure any drain or sewer or to interfere with the free flow of its contents or to affect prejudicially the treatment or disposal of its contents,the Building Authority may require the owner of the building to provide neutralizing tanks, cooling tanks, petrol intercepting traps, grease traps or other suitable provision. 91. Certain regulations not to apply to soil fitments flushed with water from waterworks Regulations 19, 20, 21, 22 and 23 shall not apply to any soil fitment which is flushed with water from the waterworks.(L.N. 295 of 1986)