Section 154(6) in The Bombay Provincial Municipal Corporations Act, 1949
(6)When the Commissioner is about to take into consideration the question of making a declaration under sub-section (1) with respect to a drain or drainage or sewage disposal works situate within the jurisdiction of some local authority other than the Corporation or situate within the City but serving an area or part of an area, within the jurisdiction of such local authority, he shall give notice to that authority and no declaration shall be made by him until either that authority has consented thereto or the [State] Government, on an application made to it, has dispensed with the necessity of such consent, either unconditionally or subject to such conditions as it may think fit to impose.