Section 114(2) in The Punjab Scheduled Roads and Controlled Areas Restriction of Unregulated Development Rules, 1965
(2)Every septic tank intended to serve a population of 24 or more persons shall be constructed into two separate compartments so that one compartment when required can be put out of use for cleaning purposes. The capacity of every compartment of the septic tank shall be 2½ times the total water supply allowance for the total number of the residents of the building.
