Who can install a backflow prevention assembly?

The customer is responsible for installing the backflow prevention assembly. It may be installed by a property owner, plumbing contractor, or a general contractor, subject to the Rules and Statutes of the Arizona Registrar of Contractors. Permits are required to install or replace these assemblies. Permits are issued by Flagstaff’s Building Safety Department. Please call 928-213-2618 for additional information.

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1. What is backflow?
2. What causes backflow?
3. What is backsiphonage?
4. What is backpressure?
5. How can backflow be prevented?
6. What is a backflow assembly?
7. How is an assembly approved?
8. Who is required to have a backflow prevention assembly?
9. How do I know if I need a backflow prevention assembly?
10. Is there a general compliance schedule and process?
11. Who can install a backflow prevention assembly?
12. Where should a backflow prevention assembly be located?
13. Who is responsible for testing and maintaining the backflow assembly?
14. I have multiple testing dates for the backflows at my property. Can I consolidate the dates?
15. I have an irrigation or fire sprinkler backflow assembly I no longer use. Can I remove it?