Backflow preventer regulatory requirements - NH and MA

Regulatory requirements vary by state. It is the responsibility of the homeowner or business owner to ensure that systems that tie into the public or private drinking water supplies are in compliance with state laws. For more information on the dangers of drinking water contamination, please see the case studies in Stop Backflow News a publication of Watts Water Technologies

For more information on NH state regulations, please see:

For more information on MA regulations, please see