Mass. Gen. Laws ch. 112 § 87DDDD
No person, corporation, city, town or district shall furnish to the public any drinking water for which any charge is made unless the treatment and distribution of such water is at all times under the supervision of a person who shall have received a certificate of competency issued by the board of certification of operators of drinking water supply facilities, established by section sixty-six B of chapter thirteen, or unless said board shall have issued a temporary emergency certification for a duration of not more than six months. Violation of this section shall be punished by a fine of not more than twenty dollars for each day such violation occurs. The superior court shall have jurisdiction in equity to enforce the provisions of this section.
Mass. Gen. Laws ch. 112, § 87DDDD