RSA 149-I:6 Bylaws and Ordinances.

I. In municipalities where the sewage is pumped or treated, the mayor and aldermen may adopt such ordinances and bylaws relating to the sewage system, pumping station, treatment plant or other appurtenant structure as are required for proper maintenance and operation and to promote the objectives of the sewage system.
I-a. In municipalities where stormwater is collected and discharged, the mayor and aldermen or town governing body may, with the advice of the planning board when requested by the governing body, adopt such ordinances and bylaws as are required for the proper maintenance and operation of the stormwater system or stormwater utility and any appurtenant structures, and to promote flood control and erosion control, water quality management, ecological preservation, m