Backflow Testing & Compliance in Bucks County, PA
Most commercial properties are required to test their backflow preventers annually — we test, certify, and file the paperwork so you stay compliant.

We test backflow preventers on commercial properties — offices, restaurants, retail, and multi-unit buildings — and file the required certification with your local municipality. Missing your annual test window can mean fines or even a water service interruption, so we track your due date and get it done on time.
Who Needs Backflow Testing
Signs you need this
- ✓Any commercial property with a fire sprinkler system
- ✓Buildings with irrigation systems connected to municipal water
- ✓Properties with a boiler, chiller, or other cross-connection risk
- ✓A notice from your municipality flagging an overdue test
- ✓New backflow devices that haven't been certified since installation
Why it happens
Municipalities require annual backflow testing because a failed preventer creates a real risk of contaminated water siphoning back into the public supply — a risk that grows with every cross-connection a commercial building has, from irrigation to fire suppression to boiler makeup water. Certification isn't optional in most jurisdictions; it's a standing legal requirement tied to your water service.
How We Handle Your Testing
We identify every device on-site
Every backflow preventer on your property gets tracked and tested.
We perform the certified test
A pressure-differential test confirms each device is functioning correctly.
We repair failed devices promptly
A failed test gets fixed fast so you’re not left out of compliance.
We file your certification
Paperwork submitted to your municipality, with a copy for your records.
Backflow Test Due or Overdue? Call Now.
Certified testing and filed paperwork — 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 Testing Questions, Answered
How often is commercial backflow testing required?
What happens if I miss my testing deadline?
Do you test all types of backflow preventers?
Can you track my testing due date for me?
What if a device fails the test?
Stay Certified, Stay Compliant
Testing, repair, and filed paperwork — handled for you.
Proudly serving Bucks County, Montgomery County, and Northeast Philadelphia as Duncan Family Plumbing — read our reviews on Google or find us on Google Maps.