Mass. Gen. Laws ch. 40N, § 22: Inconsistent laws or ordinances inoperative

Section 22. Except as otherwise provided herein, upon title to the water works system and the sewer works system becoming vested in the commission under the provisions of section five, any provisions of any special law and part of any special law and all ordinances and parts of ordinances pertaining to the water works system or the sewer works system which are inconsistent with the provisions of this chapter shall be inoperative and cease to be effective.