Backflow preventer and Backflow Preventer services in NH and MA

DSG Plumbing Services - backflow preventer testing, repair and maintenance, boiler and water heater installation and repair, plumbing fixture installation and repair

DSG Backflow Preventer Services is a fully licensed and insured provider of plumbing services in New Hampshire and Massachusetts. We specialize in backflow preventer testing, repair and maintenance. In addition, we install and repair boilers and water heaters, perform maintenance and repairs of water, gas, and sewer lines, and all plumbing fixtures.