B
Plumbing TermBackflow Preventer
/back-flow pre-vent-er/
A device that stops contaminated water from reversing into your clean water supply.
Full Definition
A mechanical device that prevents contaminated water from flowing backward into the clean water supply, protecting your drinking water.
Common Usage
“Required on irrigation systems, boilers, and anywhere non-potable water connects to your plumbing, backflow preventers must be tested annually in most jurisdictions.”
Did You Know?
Without backflow prevention, a sudden drop in water pressure (like during a water main break) could literally suck contaminated water from your garden hose or swimming pool back into your drinking water.