Backflow Preventer FAQs
Answers to the Most Common Customer Questions
Not sure why you got a letter from the water company—or what a backflow preventer even does? You’re not alone.
We get questions every day from homeowners, property managers, and business owners across New Jersey trying to make sense of backflow testing requirements, strange leaks, or unexpected notices from their township. This section of the South Jersey Backflow Library covers the top 20 most frequently asked questions about backflow preventers—answered in plain English, without the plumbing jargon.
Whether you’re brand new to this or just looking for clarity, this is a great place to start.
Explore the Most Common Backflow Questions (20 Answered Guides)
Real Questions, Real Answers
These FAQs are written for:
- Homeowners managing lawn irrigation or pool systems
- Business owners running cafés, shops, or salons
- HOAs and landlords receiving compliance letters
- First-time testersunsure what their township expects
- Contractors and plumbersslooking for quick references
This section will help you understand not only what you need to do, but also why it matters—and what can happen if it’s ignored.
Township Notices and Testing Deadlines
If you’ve received a letter from your township or water provider requesting a test or report submission, it usually means:
Your system was flagged as having a testable cross-connection
You’re due for annual or semi-annual testing
Your last test was missing, expired, or failed
You recently installed a new irrigation, fire, or pool line
We can help you identify your device, test it, and send results to your township—all with no extra effort on your end.
Fast Help for Any Backflow Question
Still not sure what you’re dealing with? We help customers every day across all 21 counties in New Jersey, whether it’s figuring out what device you have, testing it, or replacing it entirely.
📞 Call South Jersey Backflow: (856) 437-5471
📧 Email: southjerseybackflow@gmail.com
🌐 Ask us a question →