Licensed & Insured · CA LIC #982663
Open 24/7 · Mon-Sun
Pacifica, San Francisco, Burlingame, CA · Serving the Bay
PACIFICA, CA • LIC #982663 • 24/7
We answer the phone day, night, weekends, and holidays average response under 60 minutes.
If your water district has sent you an annual test notice, there is a deadline attached to it. We test, certify, repair, and install backflow prevention assemblies across Pacifica, San Francisco, and Burlingame, and we file the paperwork with your district so the compliance record is closed properly.
Upfront pricing. Same-day service. No obligation.
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A backflow preventer stops water flowing backwards from your property into the public supply. That matters wherever there is a cross-connection risk: irrigation systems, fire suppression lines, commercial premises, boilers, and any property where a pressure drop in the main could siphon non-potable water back into the drinking supply. Because the risk is to everyone on the main rather than to you, testing is a legal requirement rather than a recommendation.
Most districts require an annual test by a certified tester, with results filed directly with them. The test itself is quick, using calibrated gauges to verify that the check valves hold and the relief valve opens at the correct differential. Assemblies do fail, usually from debris on a seat or a perished rubber component, and both are normally repairable with a rebuild kit rather than a replacement.
What we handle is the whole obligation: the test, the repair if it fails, the retest, and the filing. Missing the deadline can mean a shut-off notice, so it is worth booking when the letter arrives rather than at the end of the window. Book a free estimate any time, no obligation.
Thank you again for another job well done, and thank you for responding right away. I will continue to recommend Works Plumbing because they respond right away and get the job done efficiently.
Deomen L., San Mateo, Google review
Every backflow test and repair comes with upfront pricing, licensed and background-checked technicians, and a 100% satisfaction guarantee. Works Plumbing holds California contractor license #982663, carries full bonding and insurance, and holds an A+ rating with the Better Business Bureau.
We are a plumbing-only shop, which means the tech at your door has spent years on this exact work rather than splitting time across three trades. Our crews are drug tested as well as background checked, and dispatch is staffed by real people around the clock. No surprises, no commission-driven upsells, no pressure, ever.
Book the test as soon as the district notice arrives rather than near the deadline. If the assembly fails, and a meaningful share do, you need time to repair and retest before the date passes, and everyone else who left it late is competing for the same appointments. Booking early turns a potential compliance problem into a routine visit.
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Because a backflow preventer protects the public water supply rather than your own plumbing, so the obligation is a public health one. If pressure in the main drops, water can be drawn backwards out of a property, and anything connected on your side, irrigation, a boiler, a commercial process, could enter the drinking supply. Districts require an annual certified test to confirm the device still works, and results have to come from a certified tester.
It is more common than people expect and usually straightforward. Most failures are debris sitting on a check valve seat or perished rubber components, both fixed with a rebuild kit rather than a new assembly. We quote the repair, carry it out, retest, and file the passing certification with your district. Only assemblies that are badly corroded, obsolete, or beyond parts availability need full replacement.
Yes, that is part of the service and it is the part that actually closes out your obligation. We submit the certification directly to your district and send you a copy for your own records. Districts differ in their forms and deadlines across Pacifica, San Francisco, Burlingame, and the smaller Peninsula cities, and we deal with each of their requirements rather than handing you a form to chase.
Usually fifteen to thirty minutes for a single residential or irrigation assembly. Your water is shut off briefly during the test, typically only a few minutes, and we will let you know before we close the valve. Commercial sites with multiple assemblies take longer, and for those we can schedule outside business hours so the shut-offs do not interrupt operations.
Yes. Works Plumbing holds California contractor license #982663, carries full bonding and liability insurance, and is accredited with an A+ rating from the Better Business Bureau. Every technician who comes to your door is background checked and drug tested, and arrives in a marked Works van in uniform. If you want to verify the license before booking, you can look it up on the California Contractors State License Board website.
Usually yes. We run stocked trucks out of all three of our locations in Pacifica, San Francisco, and Burlingame, so there is generally a van already working near you rather than one dispatched from across the county. Our average on-site response for emergencies is under 60 minutes, and dispatch is staffed 24/7 including weekends and holidays. A real person answers the phone, so you will know within minutes whether we can be there today.
Three Peninsula locations put a stocked truck near you, from San Francisco down to Atherton, covering 22+ cities every day.
Combined across our Pacifica, San Francisco, and Burlingame locations.
“I had a backed up kitchen drain and David from Works Plumbing came out and cleared the line in a matter of minutes. Very professional and very knowledgeable. Definitely recommend!”
“Great professional and quick service! Shamir was friendly, efficient, and professional. He fixed the leaking problem in my sink and garbage disposal in under an hour. Highly recommend!”
“Thank you again for another job well done, and thank you for responding right away. I will continue to recommend Works Plumbing because they respond right away and get the job done efficiently.”
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