Section 129(2) in Bangalore Water Supply and Sewerage Act, 1964
(2)The provisions made by any order under sub-section (1) shall, subject to the provisions of section 122, have effect as if enacted in this Act, and any such order may be made so as to be retrospective to any date not earlier than the date of commencement of this Chapter:Provided that no person shall be deemed to be guilty of an offence by reason of so much of any such order as makes any provisions thereof retrospective to any date before the making thereof.