What is a backflow preventer?
An approved assembly, device, or method that prohibits the backflow of water in water systems. The backflow assembly or device may be installed at the water connection between the city main and a building, or it may be installed at the source of possible contamination or pollution.

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1. What is a cross connection?
2. Why do such cross connections exist?
3. What is a Cross Connection Control Program?
4. What is backflow?
5. What is a backflow preventer?
6. Why would backflow need to be prevented?
7. How will a backflow preventer affect my plumbing system?
8. Why do backflow assemblies need to be tested periodically?
9. Will my water service be interrupted for backflow prevention assembly testing?
10. How much will it cost to have my backflow prevention assembly installed and tested?