(1) Every connected privy shall be provided with suitable water-cistern, so arranged as—
(a) to discharge direct into the pan of the privy not less than thirteen litres of water each time the cistern is used, and
(b) to prevent water being drawn from the cistern for any other purposes.
(2) All waste pipes and overflow pipe attached to such cistern shall terminate in the open air and a cut off from all direct communication with any drain.
(3) Every connected urinal shall be provided with adequate flushing arrangements to the satisfaction of the Authority.
(4) For the purpose of supplying water to the flushing cistern of a connected privy or connected urinal, a reserve tank of such capacity as may be specified by the Authority shall be provided at a height sufficient to supply the cistern with water:
Provided that the minimum size of a privy shall be 1.10 m2 (12 sq ft). The wall of the privy shall be lined internally with smooth impervious non-absorbent coating of rest Portland Cement and shall be of not less than 1.27 cm thickness or of the glazed tiles or polished marble to a height of not less than 91 cm:
Provided further that every connected privy and connected urinals shall be provided with a pan of such form and dimensions as may be approved by the Authority:
Provided also that every connected privy and connected urinal shall be provided with an air-tight water-trap immediately below the pan.