Backflow testing in San Diego and San Diego County.
Schedule annual backflow testing for residential or commercial property. Scylla Plumbing & Drains, Inc. tests assemblies and explains repair, retesting or replacement options if a device fails.
Testing, documentation and a clear next step.
Scylla provides residential and commercial backflow testing and inspection throughout San Diego County. Your water provider sets accepted tester, deadline and report requirements. Have the notice and property address ready so those details can be confirmed before scheduling.
- Backflow assembly testing
- Failed-test diagnosis
- Repair and retesting
- Assembly replacement
- New backflow installation
- Residential and commercial properties
Plan testing around your water district’s requirements.
Each water provider sets its own tester eligibility, deadlines and report-submission process. The notice and property address help identify the right requirements.
Have these details ready
- Water provider and property address
- Test notice and due date
- Assembly make, model and size, if visible
- Previous test report or repair history
- Clear access to the assembly
If the assembly fails, the test results help guide the next step. Repair, retesting or replacement depends on the failure and the assembly’s condition.
Check the rules for your district.
Use the water provider named on your notice to confirm current tester approval and reporting instructions.
Official San Diego-area backflow tester lists →
What to do with a backflow test notice →
Next steps after a failed test →
For City of San Diego properties, devices must be tested annually. The City’s approved tester list, updated August 26, 2026, includes Scylla Plumbing & Drains, Inc.; Sweetwater Authority’s certified tester list also includes Scylla. The City says its list is informational and not an endorsement. View the City’s tester list · View Sweetwater Authority’s tester list.
Helpful answers before scheduling.
Why did I receive a backflow test notice?
Water authorities commonly require certain assemblies to be tested on a recurring schedule. The notice normally identifies the assembly, due date and reporting instructions.
What happens if an assembly fails?
A failed assembly may need cleaning, repair, replacement parts or full replacement depending on its condition. Scylla can explain the available next steps.
Which water districts does Scylla work with?
Scylla provides backflow service throughout San Diego County. The City of San Diego and Sweetwater Authority include Scylla on their published tester lists. Other water providers set their own approval and reporting requirements; confirm acceptance for the property before scheduling.
Does the City of San Diego require annual backflow testing?
Yes. The City says backflow devices in its jurisdiction must be tested annually. Other water providers set their own requirements, so follow the due date and reporting instructions on your notice.
Does Scylla test residential and commercial backflow assemblies?
Yes. Scylla provides backflow testing and inspection for residential and commercial properties throughout San Diego County. Share the notice, property address and water provider so current tester eligibility and reporting rules can be confirmed.
Explore the next useful service.
These services often help diagnose or complete related plumbing work.
Need backflow testing in San Diego County?
Call with the property address, symptoms and any notice or equipment details.