What is an unapproved source?

Any water source NOT approved by NC Department of Environment, Health, and Natural Resources (NCDENR) for quality and safety. This includes some residential and commercial connections.

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1. What is backflow, and why is it dangerous?
2. What is an unapproved source?
3. Why is the backflow program needed?
4. What is a backflow prevention (BFP) assembly?
5. What systems require backflow prevention devices?
6. Who can install or test a backflow preventer?
7. Who is subject to the backflow ordinance?
8. Does my backflow preventer need to be placed in an enclosure (hot box)?
9. How often does my backflow device need to be tested?
10. What do I do with the test results?
11. Where do I install the backflow preventer (BFP)?
12. If a new service connection requires a backflow preventer, but it is not installed yet, will a meter be installed?