78GOVERNMENT GAZETTE, WA 9 January 2018

78 GOVERNMENT GAZETTE, WA 9 January 2018 (2) The owner of premises shall— (a) keep or cause to be kept in good repair; and (b) maintain an adequate supply of water to, all sanitary conveniences including sanitary fittings in or on the premises. 11. Ventilation of Toilet (1) A toilet in any premises shall be ventilated in accordance with the Sewerage (Lighting, Ventilation and Construction) Regulations 1971 and the Building Code and shall be— (a) mechanically ventilated to external air, through a fully enclosed duct at a minimum rate of 25 litres per second per fixture, but in no case less than 10 air changes per hour; or (b) naturally ventilated to the external air by the provision of— (i) fixed and permanently ventilated windows or skylights; (ii) fixed glazed louvred windows; or (iii) wall or ceiling vents, ducted as directly to the outside air as is practical and boxed throughout, situated in both the room in which the toilet is located and any adjacent airlock. (2) A mechanical ventilation system provided under sub-clause (1)(a) shall— (a) be separate and distinct from any other system of mechanical ventilation in the building; (b) be of an exhaust type; (c) where it is provided for a building of more than 2 storeys, shall have a ventilating fan and power unit in duplicate; and (d) be maintained in good working order and condition. (3) A natural ventilation system provided under sub-clause (1)(b) shall have— (a) a clear ventilation area of not less than 0.015 square metres per fixture; and (b) a window of light transmitting area equivalent to not less than ten percent of the floor area. (4) A toilet with an entrance opening from— (a) a room used for the manufacture, storage or consumption of food, (b) a room used for sleeping or other domestic activities; or (c) a room used as a work place, shall be mechanically ventilated as required by sub-clause (1)(a) and the entrance shall be fitted with a door having an efficient self closing device. 12. Public Sanitary Conveniences (1) A person shall not— (a) foul; (b) damage or vandalise; or (c) write on or otherwise deface, a public sanitary convenience or sanitary fixtures or fittings or the premises in or on which the sanitary convenience is located. (2) A person shall not live or sleep in or on the premises in which a public sanitary convenience is located or use it for a purpose other than that for which it was intended. 13. Lighting The owner and occupier of premises in which a sanitary convenience or a public sanitary convenience is located shall provide and maintain adequate electric lighting for persons using the convenience. 14. Installation (1) Every sanitary convenience shall be installed in accordance with the requirements of the Metropolitan Water Supply Sewerage and Drainage Act 1909 and shall have an adequate supply of water. (2) Every temporary sanitary convenience shall be installed in accordance with the requirements of the Health (Temporary Sanitary Conveniences) Regulations 1997. Division 2—Bathroom, Laundries and Kitchens 15. Bathrooms (1) A person shall not use or occupy, or permit to be used or occupied, a dwelling house without a bathroom that— (a) is adequately lined with an impervious material and has an adequate ceiling; (b) complies with the Health Act (Laundries and Bathrooms) Regulations; and (c) is equipped with— (i) a hand wash basin; and (ii) either a shower in a shower recess or a bath. (2) The floor of the bathroom referred to in sub-clause (1) shall be— (a) of concrete or of other approved impervious material of an approved thickness;