Section 101(2) in The Punjab Scheduled Roads and Controlled Areas Restriction of Unregulated Development Rules, 1965
(2)Dwellings (tenements) without individual conveniences shall have the following fitments :-(i)One water tap with draining arrangements in each tenement;(ii)One water closet and one bath for every two tenements; and(iii)Water taps in common bath rooms and common water closets.