Section 3(2)(b) in The Water (Prevention And Control Of Pollution) Cess Act, 1977
(b)every local authority, and shall be calculated on the basis of the water consumed by such person or local authority, as the case may be, for any of the purposes specified in column (1) of Schedule II, at such rate, not exceeding the rate specified in the corresponding entry in column (2) thereof, as the Central Government may, by notification in the Official Gazette, from time to time, specify.