Section 147(b) in Gauhati Municipal Corporation Act, 1971
(b)A scavenging tax of such percentage of the rateable value of lands and buildings as the Corporation may deem reasonable for providing for the collection, removal and disposal by municipal agency of all filth and polluted and obnoxious matter from latrines, urinals and cesspools and for efficiently maintaining and repairing the municipal drains constructed or used for the reception or conveyance of such filth or polluted and obnoxious matter;