Low water flow at a kitchen or bathroom faucet is almost always a clogged aerator or a partially failed cartridge β not low supply pressure. Stiff handles, dripping spouts, and leaks under the sink each trace to specific internal components. Our techs in Berkeley know faucet valve anatomy across all the major brands and carry the parts to fix them.
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Faucet repair looks simple until the wrong cartridge is installed, a seat-and-spring assembly is put in backwards, or a corroded packing nut strips during removal. Our techs know the specific disassembly sequence for the faucets they work on in Berkeley, CA.
Ceramic disc faucets from brands like Moen's newer series, American Standard, and European brands use a pair of ceramic discs that rarely fail but can crack from thermal shock (sudden cold water on a hot disc). Our techs carry common disc cartridge replacements for major brands.
Moen, Delta, Kohler, Price Pfister, American Standard, Grohe, Hansgrohe β each brand uses proprietary cartridge and valve designs that are not interchangeable. Moen uses their own 1200 and 1225 cartridge system; Delta uses ball valves in older fixtures and cartridges in newer ones; Kohler uses Rite-Temp pressure-balance cartridges in shower valves.
Shower valves β particularly pressure-balance and thermostatic mixing valves β are more complex than a kitchen sink faucet and have safety implications if repaired incorrectly. We carry cartridges for the major pressure-balance valve brands common in Berkeley, CA homes and understand the anti-scald setpoint calibration that should be verified after any shower valve cartridge replacement.
Leaving a slow under-sink leak unaddressed damages the cabinet interior and subfloor. We identify the source, quote the repair, and execute it same visit in most cases.
Here's the full range of faucet repair work our techs handle in Berkeley, CA β by fixture type and by symptom.
Kitchen faucet issues typically present as: a dripping spout (worn cartridge or ball assembly), a leak at the base (failed O-ring at the faucet body), stiff or jerky handle movement (mineral deposits or corroded cartridge tracks), or reduced flow (clogged aerator or partially closed supply valve). We diagnose the cause, repair the specific component, and test for full leak-free operation.
Two-handle bathroom faucets (separate hot and cold) are often compression or ceramic disc designs. A drip from a two-handle set almost always comes from one side only β telling us which handle's valve needs attention.
After cartridge replacement, we verify anti-scald calibration β the maximum hot water limit set by the cartridge rotational stop β to confirm the valve won't deliver scalding water at full hot even if a supply pressure event occurs.
Freeze-proof (anti-siphon) hose bibbs found in colder Berkeley, CA climates have a longer stem that shuts water off 8β12 inches inside the heated wall. When these fail or freeze-crack internally, the whole bibb typically needs replacement to restore the freeze-protection function.
Reduced flow at a kitchen or bathroom faucet is almost always a clogged aerator β the small screen-and-flow-restrictor assembly at the tip of the spout. Mineral scale from hard water accumulates in the aerator mesh over time, progressively reducing flow to a trickle. Aerator cleaning or replacement restores full rated flow in minutes.
When a faucet is discontinued (no available replacement cartridge), heavily corroded at the body, or simply past useful life, we replace the fixture. We supply faucets in the common hole configurations (single-hole, three-hole, widespread) and in finishes to match your existing hardware β chrome, brushed nickel, oil-rubbed bronze.
We identify the valve type before ordering or installing any part. The right cartridge for your faucet brand is what produces a lasting result β not a generic part that fits loosely.
If you know the brand β Moen, Delta, Kohler, Price Pfister β tell us. If not, the tech will identify it on-site from the valve body and handle design.
For many major-brand cartridges β Moen 1225, Delta RP46074, Kohler GP30413 β the part is on the truck and the repair proceeds immediately.
If the faucet body is corroded or the seat is damaged, we explain the repair complication and re-quote before proceeding.
After repair, we run the faucet through the full temperature range, check the spout, base, handle, and supply connections for any drip, and confirm the aerator flow is unrestricted. The repair is complete when we can demonstrate it's dry and flowing correctly.

My kitchen faucet had been dripping for two years β I kept putting it off. Masters Plumbing Service's tech identified it as a Delta ball-type faucet and had the complete repair kit on his truck: new ball, springs, seats, and O-rings. The whole rebuild took 40 minutes. The faucet moves smoothly now and there's absolutely no drip. I only wish I'd called sooner given how much water I was wasting.
Had a hose bibb that dripped at the packing nut all summer. Tech replaced the packing material and seat washer in 20 minutes. Also told me the freeze-proof stem length was correct for my wall depth, which was reassuring heading into winter.
Low flow in the master bath β I assumed the pressure regulator was failing. Tech cleaned the aerator (heavily scaled), and flow went from a trickle to full pressure immediately. 10-minute fix, saved me from chasing a pressure problem that didn't exist.

Masters Plumbing Service dispatches faucet repair technicians throughout Berkeley and the surrounding Berkeley, CA service area. Same-day service is available most days β call to confirm today's availability.

Call now for same-day faucet repair in Berkeley, CA.
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