Backflow Device Testing & Compliance
It’s time to have your backflow device tested.
As a BWD customer, your backflow device must be tested annually for compliance with Section 5-1.31 of the New York State Sanitary Code to avoid potential penalties.
Backflow device testing is FREE for all homeowners that reside within the District. Call our office to set up your appointment: (516) 931-0093.
Commercial accounts must call a certified inspector. Fees apply.
Click HERE for the entire list of New York State certified backflow testers.
New York State Department of Health Certified Test Form

Download our Backflow Device Testing Flyer
What is a Backflow Device?
It is a mechanical double-check value that prevents the reversal of water flow backwards into the public water main piping.
Reversal of water flow can occur when there is a pressure loss within the water supply due to water main breaks of firefighting efforts.
All residents with an irrigation system or pool are required to have a backflow device, as well as all homes constructed after 1987.


Why are Backflow Devices Important?
The water in an irrigation system comes in contact with pesticides, fertilizers and other residues that are unfit for human consumption. For this reason, all plumbing codes recognize irrigation systems as a hazard that requires a separation from drinking water systems. This separation involves the use of a backflow prevention device.
The Bethpage Water District wants to remind its residents to help protect our community's drinking water by having your backflow device tested and ensuring it remains in compliance with all standards.
What is Backflow?
Backflow is a hazardous situation that can threaten the safety of the public water supply. The danger arises when there is a connection to the water source where water can be drawn back into the pipes. For example, if the water pressure suddenly drops, any water that has puddled near the sprinkler heads, where fertilizers are often present, could be siphoned back into the water supply that the public relies on for drinking. The same thing could happen if a hose is left dangling in a swimming pool or fish tank.
A decrease in water pressure is not uncommon. If a hydrant is being used nearby to extinguish a fire or a nearby water main has ruptured, it will cause the pressure to drop suddenly.
Backflow prevention devices must be used to stop such contaminants from potentially entering the public water system.
New York State law mandates the installation of backflow devices on all appliances attached to the public water system like underground irrigation systems, swimming pools, dark rooms, water cooled refrigeration and solar heating systems. The devices must be tested annually by a certified tester, and the results filed with the Bethpage Water District.