RSA 485:4 Power to Require Improvements.

I. The department is empowered to investigate the sanitary conditions and methods pertaining to the source, treatment, and distribution of all public water supplies for domestic use, and to require the application of any treatment or improvement in conditions and methods as it may deem necessary to insure fitness and safety and adequate protection of the public health. If the department determines that improvements are necessary, the municipality, corporation, or person shall be so notified in writing and the requirements so ordered shall be effected pursuant to RSA 38:25 within a reasonable time to be fixed by the department. Appeals of actions of the department may be made as provided in RSA 485:59. The department may set intermediate goals and time frames to assist municipalities