Expert Plumbing & Mechanical Services
Complete Plumbing Services for San Francisco Homes and Businesses
Welcome To Malcolm Plumbing & Mechanical
Malcolm Plumbing & Mechanical provides dependable plumbing and mechanical services throughout San Francisco and surrounding areas. Our experienced team specializes in sewer stoppages, sewer replacement, hydro jetting, sewer camera inspections, fixture repair and replacement, and backflow testing and repairs. We also provide sewage ejector installation and service, earthquake gas valve installation, water heater repair and replacement, and boiler installation, troubleshooting, servicing, and permits to operate. From tracing and repairing water leaks to general plumbing needs, we deliver reliable solutions for residential and commercial customers. With 24-hour emergency services available, Malcolm Plumbing & Mechanical is ready to handle urgent plumbing problems when you need us most.
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Why Choose Us?
24/7 Emergency Plumbing
We provide 24-hour emergency plumbing services to help customers address urgent plumbing problems quickly. Our team is ready to respond when unexpected issues arise.
Comprehensive Plumbing Services
We handle a wide range of plumbing and mechanical needs, from sewer stoppages and hydro jetting to water heaters, boilers, fixtures, and general plumbing repairs. This allows us to provide convenient solutions for many different projects.
Experienced Sewer Solutions
We specialize in sewer camera inspections, pipe location, hydro jetting, stoppage removal, and sewer replacement. Our detailed approach helps us identify plumbing problems and determine the right solution.
Reliable Service & Repairs
We take pride in providing dependable workmanship and practical solutions for residential and commercial customers throughout San Francisco and surrounding areas. From water leaks and backflow systems to boilers and sewage ejectors, we are committed to getting the job done right.
What We Handle
Sewer stoppages and replacement
Repeated backups usually point past the fixture trap to the lateral itself. We clear the blockage, camera the line, and replace failed clay or cast-iron sections under a San Francisco side sewer permit when repair no longer makes sense.
Hydro Jetting of sewers
Cable machines punch a hole through grease; high-pressure water scours the pipe wall back to full diameter. Our jetters cut through root masses, hardened grease, and scale, then we camera the line to confirm the pipe is genuinely clear.
Camera and location of sewer piping
Guesswork gets expensive once a sidewalk is open. A self-leveling camera head with a 512 Hz sonde lets us mark depth and position from the surface, so excavation happens exactly where the defect sits and nowhere else.
Fixture repair and replacement
Faucets, toilets, tub valves, sinks, and shower trim all fail differently. We rebuild what still has good bones, swap what does not, and match rough-in dimensions so new fixtures sit right in older San Francisco bathrooms and kitchens.
Backflow testing, repair and replacement
San Francisco requires certified annual testing on every backflow prevention assembly, and a missed test can cost you water service. We test, file the paperwork, rebuild worn check valves and relief openings, and replace assemblies too far gone.
Sewage Ejector installation, service and repair
Basement bathrooms below the sewer main depend on a pump nobody thinks about until it stops. We install sealed, vented basins, service float switches and check valves, and replace failed pumps before waste backs up into finished space.
Complete Plumbing, Sewer, and Boiler Service in San Francisco, CA
A clogged sewer lateral in San Francisco, CA rarely announces itself politely. It shows up as three slow drains, a damp basement, or a backup during the first heavy rain. Malcolm Plumbing & Mechanical answers those calls across the city every week, handling sewer stoppages, hydro jetting, camera locating, fixture work, and water heater replacement. Our licensed and insured crews handle backflow testing, sewage ejector systems, earthquake gas valves, boiler service, and Permit to Operate certification for commercial buildings. With 35+ years behind us, free estimates, and a one-year labor warranty, we cover residential and commercial work throughout San Francisco County and neighboring Peninsula cities. Emergency help runs 24 hours.
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Areas We Serve
San Francisco, CA
Oakland, CA
Fremont, CA
Hayward, CA
Sunnyvale, CA
Santa Clara, CA
Vallejo, CA
Concord, CA
Berkeley, CA
Richmond, CA
Antioch, CA
San Mateo, CA
Daly City, CA
San Leandro, CA
Redwood City, CA
Mountain View, CA
San Ramon, CA
Dublin, CA
Alameda, CA
Plumbing Help That Shows Up and Finishes the Job
Buildings in San Francisco, CA ask a lot of their plumbing, from century-old laterals under narrow lots to boiler rooms serving dozens of units. Malcolm Plumbing & Mechanical has spent 35+ years learning how those systems behave here, which is why our estimates hold and our repairs last. Residential or commercial, routine or urgent, we bring the same crews, the same licensing, and the same one-year labor warranty. Free estimates are available, financing options exist for larger work, and our contact page is the fastest way to start the conversation.
FAQ's
How do I shut off the water to my house in an emergency?
Find the main shutoff first, usually near the water meter or where the supply enters a garage. Turn it clockwise until it stops. Label it now, because searching for it during a burst pipe wastes minutes you cannot spare.
Why does my water pressure drop when more than one fixture runs?
Undersized or partially blocked supply piping is the usual culprit. Galvanized lines narrow with corrosion over decades, so two fixtures compete for flow the pipe can no longer deliver. A pressure test and a look at the regulator will separate the two causes.
What causes pipes to bang when a faucet shuts off?
That knock is water hammer, the shock of moving water stopping abruptly against a closed valve. Loose pipe straps make it louder. Adding arrestors near quick-closing valves like washing machine and dishwasher solenoids absorbs the shock and protects joints from repeated stress.
Are chemical drain cleaners safe for older pipes?
Repeated use is not. Caustic products generate heat and attack cast iron, older plastics, and the seals at joints, while rarely touching the real obstruction. Mechanical clearing or hydro jetting removes the blockage itself instead of leaving softened material to reform downstream.
