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1. Why do I need to install a Backflow Assembly?

Backflow assemblies are required to protect the potable water system. The District is required by the Environmental Protection Agency (EPA) Safe Drinking Water Act, State Department of Public Health and Uniform Plumbing code to be install backflow assemblies where there is a potential cross-connection hazard.

2. Why do Backflow Assemblies have to be tested on an annual basis?

Backflow assemblies have internal seals, springs, and moving parts that are subject to fouling, wear, or fatigue. Because of this, all backflow assemblies must be tested on an annual basis with a calibrated test gauge to ensure that they are functioning properly.

3. What is a Backflow Assembly?

Backflow assemblies are designed to prevent water and potential contaminants from flowing back into the public water system.

4. Who is responsible for the test and any fees associated with the test?

The customer is responsible for scheduling the test with a certified tester as well as any fees associated with the test, repair and or replacement.

5. Where do I install the Backflow Assembly?

The backflow assembly needs to be installed just behind the water meter and must follow the AWWA installation standard. If there is a situation where a backflow assembly cannot be installed just behind the water meter please call Padre Dam's Compliance Department at (619) 258-4731.

6. Do I need to have the installation of the Backflow Assembly inspected by the Compliance Department at Padre Dam?

Yes, all new installations must be inspected prior to the water service being turned on. Please contact the Compliance Department at (619) 258-4653 to discuss installation requirements and to schedule a time for the inspection.

7. Will I be notified prior to my required Backflow Assembly annual test date?

Yes. Padre Dam will mail a reminder notice and test form 30 days prior to the required test date.

Time Line as Follows:

First Notice Mailed - 30 days before due date of annual test
Second Notice mailed - After 30 day testing window, providing additional 15 days
Shut-Off Notice Mailed (Fees Apply) - After additional 15 days, providing additional 10 days
Water Service Terminated (Fees Apply) - After additional 10 days, providing additional 2 days

8. Where in Padre Dams Rules and Regulations can I find more information?

The Rules and Regulations Sections 5.4 contains information pertaining to the District’s Cross-Connection and Backflow Program. 

9. What are the most common cross-connections found?

• All commercial properties are required to have a Backflow Assembly
• Fire Sprinkler Systems
• Auxiliary Water Supplies (wells, storage tanks & pumps)
• Irrigation or Lawn Sprinkler systems (fertilizer injection systems)
• Hoses attached to pesticides, plant killer, fertilizer or to flush antifreeze
• Ornamental fountains  
• Hose bibs

10. What Testing Company should I pick? Is one better than the other?

The District does not endorse or recommend any specific backflow assembly testers.

11. Can I get an extension on my test?

Depending on the circumstances, an extension may be granted. If you need an extension please contact the Compliance Department. An extension must be granted prior to the backflow assembly test due date.

12. Where can I find more information about cross-connection control and backflow assemblies?

There are a number of references for backflow and cross-connection prevention. The American Water Works Association M14 Manual and the University of Southern California’s (USC) Manual of Cross-Connection Control are two of the most recognized sources of standards  in the industry.

13. Where will my annual testing notification be mailed?

A courtesy notice will be mailed to the billing address on file. It is the responsibility of the customer to notify the Compliance Department (619) 258-4653 of any address changes.