Backflow Prevention in Bucks County, PA
A backflow preventer keeps contaminated water from siphoning back into your clean water supply — required for irrigation systems and many older homes.
A backflow preventer stops water from flowing backward into your home's clean supply — critical for irrigation systems, well connections, and any cross-connection where contaminated water could otherwise siphon back in. We install, test, and repair these devices to keep your water supply protected and your township compliant.
When You Need a Backflow Preventer
Signs you need this
- ✓You're installing or already have a lawn irrigation system
- ✓Your property has a private well alongside municipal water
- ✓Your township requires annual backflow testing
- ✓You’re noticing discolored or off-tasting water after low pressure events
- ✓A home inspection flagged a missing or failed backflow device
Why it happens
Backflow happens when water pressure drops suddenly, such as during a water main break or heavy firefighting draw, and can pull water backward through an unprotected connection, dragging in fertilizer, lawn chemicals, or well water. Anywhere your plumbing connects to a non-drinking-water source is a cross-connection that needs protection.
How We Handle Backflow Prevention
We identify every cross-connection
Irrigation, wells, and any non-potable connection get checked.
We install the correct device
The right type of preventer for your specific connection and local code.
We test it on schedule
Annual testing keeps you compliant and confirms the device is actually working.
We repair failed units fast
A failed test gets fixed quickly so you’re not left out of compliance.
Need Backflow Testing or Installation? Call Now.
Protect your water supply and stay compliant — upfront pricing.
Serving Bucks County & Montgomery County, PA
Based in Newtown, PA, our vans reach the whole region — from Yardley and Doylestown to Abington and beyond.
Other Ways We Can Help
Backflow Prevention Questions, Answered
Do I really need a backflow preventer for my irrigation system?
How often does a backflow preventer need to be tested?
What happens if my backflow preventer fails a test?
Can a backflow event really contaminate my drinking water?
Do older homes need backflow protection even without irrigation?
Protect Your Water Supply
Installation, testing, and repair — upfront pricing, code-compliant work.
Proudly serving Bucks County, Montgomery County, and Northeast Philadelphia as Duncan Family Plumbing — read our reviews on Google or find us on Google Maps.