San Diego DMA · the notice on the door
What backflow testing is
Backflow testing is a certified check of a backflow preventer — the assembly that keeps irrigation, fire-line, or building water from reversing into the public supply. Most local water agencies require it on a regular interval, often yearly, and they mail you when it is due. This site forwards a request. It is not the tester of record and does not file the report.
What the tester is actually doing
They isolate the assembly, measure whether the checks and relief hold, and record a pass or fail. That result is what the water agency wants. City of San Diego publishes its own cross-connection information; Chula Vista, East County districts, Escondido, and Oceanside mail their own letters.
Follow the letterhead you received. Annual backflow test requirements is the request page for a routine notice.
Who is allowed to test
California backflow testers hold specific certification. This website does not. A certified local tester may contact you if they accept the lead. Ask to see their current card before they open the device.
We will not publish a number we do not hold, and we will not call the agency for you.
What a test is not
It is not a plumbing emergency visit. It is not a guarantee of a pass. It is not the same as repairing a leaking preventer after a fail — that is rebuild or replace, then a retest.
If a pipe is open or water is off, call a plumber directly. This form is for scheduled testing and failed-test repair.
If you already have a tester
Keep them. Annual testing works as a relationship. Use this page when you do not have anyone, or when you were told to find a replacement tester.
Put the agency name, due date, and device count from the notice in the form. Do not send account passwords.
Related service requests
These are narrower request pages on this site, not a list of partner shops. A licensed local provider may contact you if they accept a lead.
Local statistics
San Diego backflow testing statistics, 2026 — public-record figures, not a bid from San Diego Backflow Testing.
Questions
Why did I get a notice?
Water agencies run cross-connection programs so non-potable water cannot enter the public system. Follow the letter you received. This site does not replace the utility.
Are you certified to test?
No. This website is not the tester of record. A certified local tester may contact you after you submit a request. Ask to see their current card.
How is this different from installing a backflow preventer?
Testing checks an assembly that is already in the ground. Installation or replacement is a different scope. Write which you need.
Can you guarantee a pass?
No honest tester can. Devices fail. The person who tests it will tell you the result and what a rebuild or replacement would involve.
Related pages
These are more request pages on this site, not a list of partner shops. A licensed local provider may contact you if they accept a lead.
Request backflow testing in San Diego
Call if you want to talk now, or send the form. Either way this is a request, not a booked job.
Call (619) 604-7252