952GOVERNMENT GAZETTE, WA 5 March 2021

952 GOVERNMENT GAZETTE, WA 5 March 2021 (b) a habitable room in the house to be used for sleeping purposes unless— (i) for every person over the age of 10 years using the room there is at least 14 cubic metres of air space per person; and (ii) for every person between the ages of 1 and 10 years there is at least 8 cubic metres of air space per person; or (c) any garage or shed to be used for sleeping purposes. 3.2.3 Calculated Sufficient Space For the purpose of clause 3.2.2, in calculating the space required for each person— (a) each room shall be considered separately and sufficient space shall be allowed in each room for the number of persons present in the room at any one time; and (b) a deduction shall be made for the space occupied by furniture, fittings and projections of the walls into a room. 3.2.4 Ventilation (1) A person shall not use or occupy, or permit to be used or occupied, a house unless the house is properly ventilated. (2) For the purpose of subclause (1) a house shall be deemed to be properly ventilated if it complies with the Building Code, including the provision of— (a) natural ventilation; or (b) a mechanical ventilation or air-conditioning system complying with AS1668.2:2002. (3) The owner of a house provided with mechanical ventilation or an air-conditioning system shall ensure that the system is— (a) maintained in good working condition and in accordance with AS/NZS 3666.2:2002; and (b) in use at all times the building is occupied if it is a building without approved natural ventilation. (4) If, in the opinion of an EHO, a house is not properly ventilated, the local government may by notice require the owner of the house to— (a) provide a different, or additional method of ventilation; or (b) cease using the house until it is properly ventilated. (5) the owner shall comply with a notice made under subclause (4). 3.2.5 Sub-Floor Ventilation The owner or occupier of a house shall make provision for sub-floor ventilation by ensuring that air bricks and other openings are kept clean of refuse, vegetation, building materials, dirt and the like. Division 3—Water Supply 3.3.1 Water Supply (1) The owner of a house shall ensure that it is connected with a separate and independent water supply from the mains of a licensed water service operator or a water supply to the satisfaction of the (2) The water supply shall at all times deliver an adequate supply of drinking water to each tap in the house. (3) The water supply to toilets, or for garden use may be from an alternative source, not necessarily drinking water. 3.3.2 Rainwater Tanks The owner or occupier of a house where part of the water supply is drawn from a rainwater tank shall— (a) maintain in a clean condition— (i) the roof forming the catchment for the tank; and (ii) the guttering and downpipes appurtenant to the roof; (b) ensure that each rainwater tank is fitted with a tight-fitting mosquito proof cover which shall not be removed at any time except for the purpose of cleaning, repairing or maintaining the tank; (c) annually clean any tank, which is used to store water for human consumption; (d) when directed by an EHO, empty, clean and disinfect any tank upon the premises, used to store water for human consumption. 3.3.3 Wells The owner or occupier of any premises shall not use or permit for human consumption the use of the water from any bore or well unless the bore or well is— (a) at least 30 metres from any soak or other possible source of pollution unless otherwise approved by the Executive Director of Public Health; and (b) covered with a tight-fitting cover without openings of any sort other than those essential for the insertion of a pump.