Why are backflow preventers needed?
Backflow preventers are designed and installed to prevent the flow of water backwards through a pipe. Two commonly required backflow preventers are the Double Check Valve Assembly (DC) and the Reduced Pressure Zone Assembly (RP).

Both of these protect your public utility drinking water system from backflow created by back siphonage and back pressure. The RP backflow preventer is used to protect against potential health hazards such as sewage, medical fluids, and chemicals.

Show All Answers

1. What is a cross connection?
2. What is backflow?
3. Why are backflow preventers needed?
4. Who needs a backflow preventer?
5. What is a backflow prevention program?
6. How can this contamination happen?
7. What is an indirect cross connection?
8. Why does this backflow preventer need to be installed in front of my house?
9. Can I cover or hide the backflow preventer?
10. Why do some backflow preventers need to be tested every year?
11. My backflow preventer sometimes leaks water from a relief valve. Can I remove or plug the valve to prevent water loss?