Gujarat Provincial Municipal Corporations Act, 1949
All drains, ventilation-shafts and pipes and all appliances and fittings connected with drainage works constructed, erected or set up at any time at the charge of the Municipal Fund or at the charge of the funds of any local authority having jurisdiction in any part of the City before the appointed day upon any premises not belonging to the Corporation and otherwise than for the sole use and benefit of the premises or group of premises shall, unless the Corporation has otherwise determined, vest in the Corporation.