Leaky Faucet Repair in San Mateo, CA

Professional Service in San Mateo

Schedule faucet repair with Works Plumbing and we will bring the parts most San Mateo faucets need.

Key Takeaways

• Most faucet leaks come from worn washers, O-rings, cartridges, or seats.
• San Mateo’s water is soft on average but alkaline, so thin scale still forms at aerators and hot side cartridges.
• The water is also treated with chloramine, which is hard on rubber parts over time.
• We repair with chloramine-resistant seals where the manufacturer offers them.
• You get an upfront price and a clear repair or replace recommendation.

Signs Your Faucet Needs Repair

Faucets fail in a handful of predictable ways. Each one tells us where to look:

• Drip from the spout when off: a worn washer, seat, or cartridge
• Water around the base or under the handle: a failed O-ring
• Handle that is stiff, loose, or spins: a worn stem or cartridge, or stripped splines
• Weak flow from one faucet only: a clogged aerator or a debris-blocked cartridge
• Hot and cold that will not mix right: a cartridge problem on a single-handle faucet
• Water in the sink cabinet: a supply connector, a sprayer hose, or the faucet body

A drip seems small. One that runs all day can waste many gallons and stain a sink. A leak under the cabinet can damage the base before you notice it.

Our Faucet Repair Process

1. Identify the faucet. Brand, model, and valve type decide which parts fit. We check before we take anything apart.
2. Shut off and protect. We close the fixture stops, cover the drain, and lay out parts in order.
3. Find the failed part. We pull the cartridge or stem and inspect seals, seats, and springs.
4. Quote the repair. You see the price for the repair, and for replacement if that is the better option.
5. Repair and test. We reassemble, flush the aerator, and run hot and cold to check for drips at the spout, handle, and base.

Faucet Types We Repair

Each type wears differently, so we stock parts for all of them:

• Compression faucets: two handles, rubber washers that press against a seat. Washer and seat wear is common.
• Cartridge faucets: one or two handles with a removable cartridge. Most modern kitchen faucets work this way.
• Ceramic disc faucets: very durable discs, but the rubber seals under them still age.
• Ball faucets: a single lever over a rotating ball with springs and seats.
• Pull-down and pull-out kitchen faucets: add a hose, weight, and spray head that can leak too.
• Tub and shower spouts and diverters: worn diverter gates and leaking spout connections.

Repair or Replace the Faucet?

We repair when the faucet body is sound and parts are available. Replacing a working faucet just to fix a drip wastes money.

Replacement makes more sense when:

• The faucet body is cracked or corroded.
• Parts are discontinued and no compatible cartridge exists.
• The same faucet has needed repair several times.
• You already planned to update the fixture.

If we recommend replacing a faucet, we explain why and give you the price for both options. Under the City of San Mateo’s plumbing permit rules, permits apply to the installation or replacement of fixtures, and we will tell you if your job falls into that category.

Many sink calls are really two problems. If the kitchen drip comes with a humming or jammed disposal, our garbage disposal repair team in San Mateo can handle both on one visit. If you see water damage you cannot trace to the faucet, our leak detection service in San Mateo finds the source.

What to Do Before We Arrive

A few simple steps limit damage and help us work faster:

• Close the fixture stops. The small valves under the sink turn clockwise to close. If one will not turn, do not force it; old stops can break.
• Use the main shutoff if needed. If the faucet will not stop running and the stops fail, close the main shutoff to the home.
• Note the brand. A logo on the handle or spout helps us bring the right cartridge.
• Snap a photo. A picture of the faucet and the space under the sink tells us a lot before the visit.
• Dry the cabinet. Move cleaning products out and lay a towel down so we can see where water collects.

If a fixture stop is the part that is leaking, tell us when you book. Stops and supply connectors age under the same chloramine exposure as faucet seals, and we can replace them on the same visit.

Why San Mateo Homeowners Call Works Plumbing

We at Works Plumbing have been family owned and operated since 2009. When you call us for a faucet, you get:

• Licensed and insured (CSLB #982663) technicians
• An upfront price before any work begins
• Parts matched to your faucet brand and model
• Chloramine-resistant seals where available
• Same-day service in most cases
• Coupons and financing on qualifying work

We serve homes, condos, and apartments across the city, from Shoreview and Fiesta Gardens to Glendale Village and the neighborhoods near Laurelwood Park. For everything else we fix, see our San Mateo plumbing services page or our main faucet repair service page.

San Mateo Faucet Repair FAQs

Why do faucet washers wear out so fast in San Mateo?

The water is disinfected with chloramine. Cal Water’s 2025 report for the San Mateo System lists an average of 2.7 ppm. Long contact with chloramine ages some rubber compounds, so washers and O-rings lose their seal. We use chloramine-resistant parts where available.

Is hard water causing my faucet to drip?

Probably not. Cal Water reports average hardness of 62 ppm for the San Mateo System and classifies water under 75 ppm as soft. Hard water spots can still form on the fixture, but most San Mateo drips come from worn seals.

My faucet sprays sideways after the water was shut off on my street. What happened?

Debris loosened during water system work can lodge in the aerator. Unscrew the aerator, rinse it, and reinstall it. If flow stays weak or uneven, the cartridge may have caught debris too, and we can clean or replace it.

Can you repair faucets in condos and large apartment buildings?

Yes. Many San Mateo homes are in multi-unit buildings. We locate the fixture stops first. If the unit has none, we coordinate a building shutoff with your manager before we start.

Does my water supplier change how you repair a faucet?

Most of San Mateo gets Cal Water, and part of the city is served by the Estero Municipal Improvement District, operated by Foster City. Your bill shows which. Seal wear is still the main cause of drips either way, and we repair it the same way.

Do I need a permit to fix a leaky faucet in San Mateo?

Replacing a washer or cartridge inside your existing faucet is a repair. The City’s plumbing permit language covers installing or replacing fixtures, so if your job becomes a replacement, we confirm the permit question before we start.

Stop the Drip Today

A faucet repair is usually one visit and one part. Book faucet repair in San Mateo and get an upfront price before we start.

Why San Mateo homeowners call Works

• Stocked trucks already in the area, so we arrive fast
• Upfront, flat-rate pricing approved before any work
• Licensed, background-checked, drug-tested technicians
• 100% satisfaction guarantee on every job

What to Expect

We’re highly experienced with: Leak detection Drain cleaning Drain repair Rooter services Water heaters Sprinkler systems Tankless water heaters Toilet repair & installation Faucet repair & installation Shower repair & installation Trenchless sewer repairs Camera inspections Garbage disposals Gas lines Gas valves Burst pipes Pipe repair Sump pumps Sewer repairs Hydro jetting Pipelining Plumbing repairs

What’s included

• Drain cleaning & rooter service
• Water heater repair & install
• Leak detection
• Gas line service
• Emergency plumbing
• Repiping & trenchless

How the job goes

• We diagnose the issue and show you a flat price upfront.
• You approve it, then our tech gets to work from a fully-stocked truck.
• We test the fix twice and leave your space cleaner than we found it.

Why Choose Works Plumbing

Experts With Leaky Faucet Issues At Works Plumbing, we strive to provide complete satisfaction for all our San Mateo customers, and our past work is a testament to this. We are a locally owned and operated plumbing company that takes great pride in serving our clients. If you’re experiencing any signs that you have a plumbing issue , don’t hesitate to reach out to us. Whether it’s a leaky faucet, low water pressure, or unusual sounds coming from your pipes, our experienced plumbers can diagnose and resolve the problem efficiently. Contact us today for prompt and reliable plumbing services.   Plumbing Repair Toilet Repair Shower Repair Hydro Jetting Camera Inspection Leak Detection Gas Line Repair Trenchless Pipe Repair Water Line Repair Sump Pumps Garbage Disposal Drain Cleaning Faucet Repair Hot Water Heater Repair Tankless Water Heaters

See how we handle it:

Prefer to listen? Catch this topic on our homeowner podcast: