Backflow prevention devices prevent contaminated water and/or chemicals from flowing back into the public drinking water supply system. Certain types of businesses are legally mandated to install and operate approved backflow preventers.

Backflow prevention devices are an important component of the New York City Department of Environmental Protection’s drinking water protection program and are legally mandated under the New York State Sanitary Code and the Rules of the City of New York for those businesses identified as posing a risk to the public water supply.

M&M Plumbing & Heating, Inc. provides full service installation of Backflow Preventers  in all buildings including permits, NYC DEP and DOB fillings, and sign off's.  We are also certified in all Initial and Annual Testing of these devices.

F.A.Q. for the Backflow Prevention (click here)