San Diego DMA · after a drip or a fail
When a backflow preventer is leaking
A leaking backflow preventer is usually a relief port discharging or a check that will not hold. On an RPZ, a relief that dumps is the device telling you it is not passing. The water agency still wants a passing report. That means repair or replacement, then a retest. This page cannot make a leak disappear.
Relief dumping versus a puddle at the box
On an RPZ, water from the middle relief is a device symptom. Water around a vault can also be a box drain, irrigation overspray, or a fitting on either side of the assembly. Write where the water is coming from if you can see it.
Failed test repair is the request when you already have a fail, or when the relief is dumping and you need someone who tests and repairs.
Rebuild versus replace
Many RPZs and double-checks take a rebuild kit if the body is sound. Frozen shutoffs, cracked bodies, and obsolete models get replaced. That choice belongs to the person looking at the valve, not to this form.
Ask whether the retest is included. Often it is a separate line. The agency wants a passing report, not a conversation with this website.
Coastal corrosion and locked cages
Devices near the coast seize. Enclosures fill with sand or rust. East County and inland valves fail too — they just rust for different reasons. Write if the last test already needed a rebuild, and whether anyone can open the cage.
Do not cut a lock. Write “needs access.”
This site’s limit
We pass the request. We do not hold a tester card. We do not file. A certified local tester or a plumber who does this work may contact you. You can get a second opinion before anyone cuts pipe.
If water is flooding a vault or a pipe is open, that is a plumbing emergency, not a scheduled test form.
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
Is a dripping RPZ always a fail?
Steady relief discharge is treated as a device that is not holding. A tester still has to see it. Do not assume a puddle next to the box is the relief port without looking.
Can you just file a pass if it is only dripping a little?
No. A fail is a result, not a negotiation. Repair or replace, then retest, then file.
I only have a verbal “it failed.” Can I still request repair?
Yes. Write that. A tester still has to see the valve. The device ID from the notice helps if you have it.
Is a leaking preventer a water-off emergency?
Not always. A dumping relief is urgent for compliance and water waste. An open pipe or a vault filling the sidewalk is a plumber call. Write what you see.
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