18. Pail Closets
(1) Every person who constructs a pail closet—
(a) shall construct the apartment of the same dimensions as if it were a water closet, and at a minimum distance from any portion of a habitable building of 10 feet and 40 feet from any well spring or stream of water used or likely to be used by man for drinking or domestic purposes or for the manufacture or for the preparation of articles of food or drink for human consumption or for the cleansing of vessels with a view to the preparation for sale of such articles and otherwise in such a position as not to render any such water liable to pollution;
(b) shall construct the walls of brick or concrete rendered internally with mortar or of other materials approved by the Sewerage Authority;
(c) shall provide it with a sufficient opening for lighting and ventilation as near the top as practicable and communicating directly with the external air;
(d) shall construct the floor of concrete or other impervious non-absorbent material approved by the Sewerage Authority;
(e) shall construct the seat, the aperture in such seat and the space beneath such seat of such dimensions as to admit of a movable receptacle for filth being placed and fitted beneath such seat in such a manner and in such a position as effectually to prevent the deposit upon the floor or sides of the space beneath such seat or elsewhere than in such receptacle of any filth which may from time to time fall or be cast through the aperture in such seat and for this purpose every such receptacle shall be located in the correct position by suitable stops. The seat shall rest upon brackets or piers formed of non-absorbent material and so constructed that a sufficient part may be lifted in a vertical position as to afford adequate access to the space beneath the seat for the purpose of cleansing such space or of removing therefrom or placing and fitting therein the appropriate receptacle for filth or shall otherwise provide adequate means of access to such space for the purposes aforesaid. The space beneath the seat shall be adequately protected against the ingress of flies or mosquitoes.
(2) The receptacle shall be of a non-absorbent material so constructed that its contents shall not escape.