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, with same-day service across the Peninsula.
Works Plumbing handles sump pump installation in San Francisco, CA for basements, crawlspaces, and ground-level rooms that take on water in heavy rain. A permanent pit and pump start on their own when water rises, so you are not bailing or renting equipment in the middle of a storm.
Upfront pricing. Same-day service. No obligation.
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One-time use. Combine with our 24/7 emergency service and pay only when the job is done. Mention this offer when you book.
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We find where the water comes in, size the pump to it, and route the discharge where city rules allow.
Request a sump pump estimate in San Francisco
Water problems below grade tend to repeat. You likely need a pump when:
One wet winter can be bad luck. Two in a row is a pattern worth fixing.
We find the low point, look at how water reaches it, and check the floor, the nearest power, and the possible discharge paths.
We cut and excavate for the pit, set a liner, and install a pump sized to the water volume you have seen. A sealed lid keeps out debris and cuts odors.
We run the discharge line with a check valve to the approved outlet, then fill the pit and watch the pump cycle on and off.
Not every pump suits every space. The main choices:
| Pump type | Where it fits |
|---|---|
| Submersible | Finished spaces and pits where quiet operation matters |
| Pedestal | Narrow pits where the motor can sit above the water |
| Battery backup | Any home where a storm power outage would stop the main pump |
| High-water alarm | Any installation, as an early warning |
Storms and power outages often arrive together. A battery backup keeps the pit from filling while the power is out.
Already have a pump that is failing? Common problems we fix:
If the motor has failed or the pump is undersized for the water it sees, we replace it with a unit matched to the pit.
A sump pump moves groundwater and storm runoff out of a low space. It does not stop sewage from backing up through a floor drain or fixture. That job belongs to a backwater valve on the building’s sewer line.
Many San Francisco homes need one or the other, and some need both. Our San Francisco plumbing services page covers storm flood risk in the city and how backflow protection fits in.
A sump installation can involve cutting a slab, new drain piping, and a dedicated outlet. We confirm permit requirements with the Department of Building Inspection before work starts, and we handle any permit the job needs.
A pump that sits idle all summer needs a check before the first storm:
We offer pre-season checks for pumps we install and for existing systems.
We install sump pumps across San Francisco. For pump options and our wider service, see our sump pump services.
SFPUC says I may need to buy or rent a sump pump. Which should I do?
If water reaches your basement once, a rental may be enough. If it comes back each winter, a permanent pit and pump start on their own and do not depend on someone being home. We help you decide based on how often and how much water you have seen.
Where can a sump pump discharge in San Francisco?
We confirm the legal route with the city before installation. We discharge to the yard or to storm drainage as city rules allow, never into the sanitary sewer line.
Will a sump pump stop sewage from backing up into my lower floor?
No. A sump pump removes groundwater and storm runoff. Sewage backing up through a drain needs a backwater valve on the sewer line, and we can check whether your home has one.
Do I need a battery backup on a San Francisco sump pump?
We recommend one. The storms that fill a sump pit can also knock out power, and a backup keeps the pump running when the main one cannot.
Can you help during a storm if my basement is flooding now?
Yes. We offer 24/7 emergency service. Turn off power to the flooded area only if you can reach the panel safely, and keep out of standing water near outlets.
Does a sump pump installation in San Francisco need a permit?
It depends on the work, such as cutting a slab or adding drain piping. We confirm the requirement with DBI before work starts and handle the permit when one is needed.
A permanent sump pump means the next storm is handled whether you are home or not. Works Plumbing sizes it, installs it, and routes the water where it is allowed to go.
Schedule sump pump installation in San Francisco
Sump Pumps You Can Count on Works Plumbing has been providing quality plumbing and sump pump replacement services in San Francisco since 2009, and we always offer free quotes on sump pump services. We’ll help you select the right model for your home, and we’ll make sure that you understand every part of your estimate before we begin the installation. We bill for all of our services according to standard labor rates, and we’re partnered with GreenSky® to provide long-term financing options for our well-qualified customers on approved credit. Whether you live in the Sunset District or Hunter’s Point, we offer 24-hour emergency plumbing services, and our commitment to legendary customer service is second to none.
Works Plumbing is a family-owned, licensed and insured plumber, CSLB #982663, serving San Francisco since 2009. We size each pump to the water the home sees and confirm the discharge route with the city first.
If you have rented a pump after a San Francisco storm, note where the water entered and how deep it got. Those two details tell us where a permanent pit belongs and what size pump it needs.
See how we handle it:
Upfront pricing, licensed techs, and a real human on the phone 24/7 across the Peninsula.
A look at real Works jobs around the Peninsula.
San Francisco’s own storm guidance names the sump pump as the answer to one specific problem. The SFPUC rain-ready page says that if you have a large amount of water in your basement and no drain present, you may need to buy or rent a sump pump.
That advice fits how the city drains. San Francisco has a combined system that collects stormwater and sewage in the same set of pipes. In a heavy storm, the system carries both at once, and a below-grade room with no drain has nowhere to send the water that reaches it.
A rented pump handles one storm. It does not handle the next. Someone has to be home to set it up, run the hose, and watch it, and that is hard to do at night or while away.
A permanent installation changes the routine. It means a sealed pit at the low point, a pump with a float switch that starts itself, a check valve so water does not flow back, and a discharge line to a legal outlet.
We at Works Plumbing confirm the legal discharge route with the city before we install. We route it to the yard or to storm drainage as the rules allow, never into the sanitary sewer line.
When a homeowner calls after renting a pump, we start with where the water entered and how much there was. That tells us where the pit goes and how much pump it needs.
We also serve these neighboring Peninsula towns.
We’ve earned our reputation one happy homeowner at a time.
“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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