What is a cross-connection?

A cross-connection is an actual or potential connection between a public water system line and any other line, which contains water or fluids of a questionable or unknown source or quality. When this situation occurs, the drinking water supply can become contaminated during a backflow condition. An example would be a garden hose attached to a service sink with the end of the hose submerged in a tub full of detergent. Another example would be a garden hose attached to a faucet and the other end lying in a swimming pool.

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1. What is backflow?
2. What is a cross-connection?
3. What is the most common form of cross-connection?
4. Is Red Oak the only city in Texas enforcing backflow regulations?
5. What is a cross-connection control program or a backflow prevention program?
6. What is a backflow preventer and why are they needed?
7. What is a Customer Service Inspection (CSI)?
8. Who needs a backflow preventer?
9. Must my home or business have backflow prevention?
10. How would a backflow issue occur with a lawn irrigation system?
11. How would a backflow issue occur in a commercial building?
12. Why does a soft-drink dispensing machine require backflow protection?
13. Is my home or my business “grandfathered” in?
14. Why is the City responsible for enforcing the rules, since they are State of Texas (TCEQ) rules?
15. Who is responsible for the testing and maintenance of the backflow prevention assembly?
16. When are backflow devices required to be tested?
17. Why do backflow devices have to be retested?
18. Who do I call to have a test completed?
19. What will a test cost?
20. Who can I contact for more information on backflow prevention?