Section 225(2) in The Coimbatore City Municipal Corporation Act, 1981
(2)The corporation may, in the execution and for the purposes of any works beyond the limits of the City sanctioned by the Government whether before or after the date of commencement of this Act, exercise all the powers which it may exercise, within the City throughout the line of country through which conduits, channels, pipes, lines or posts and wires and the like run, and over any lake or reservoir from which a supply of water for the use of the City is derived, and over all lands at a distance not exceeding two kilometres beyond the high water level of any such lake or reservoir, and over any lands used for sewage farms, sewage disposal tanks, filters and other works connected with the drainage of the City.