Serving Montclair & the Inland Empire
Licensed & Insured Honest. Reliable. Local.
Sweetwater Plumbing πŸ’¬ Text us ☎ (909) 312-4516

Trusted plumber in
San Dimas.

If you are a homeowner or business owner in San Dimas, we would be glad to help and to treat your home or business like our own. We answer the phone 24/7 at (909) 312-4516. San Dimas is mostly 1960s-1980s tract construction with a few notable exceptions: the older homes around downtown (where Bonita and San Dimas Avenue intersect) and the custom homes in the hills, from Via Verde near Bonelli Park to North San Dimas and San Dimas Canyon. The 1960s-1970s tract homes are the bulk of our work here: many still have original galvanized supply lines that need replacement.

Sweetwater Plumbing is a licensed, family-owned plumber (CSLB #889182) serving San Dimas and the Inland Empire, rated 4.8 stars across 588+ reviews. We take urgent calls in San Dimas 24/7, with same-day service for most non-urgent jobs booked before noon. Most of the city gets its water from the Golden State Water Company. Call (909) 312-4516 24/7.

Plumbing in San Dimas

Licensed plumbing for San Dimas homes and businesses.

Services we offer here

From a slow-draining sink to a slab leak under the foundation, and from full repipes to gas line installations, we handle nearly every part of a residential or commercial plumbing system in San Dimas. For urgent problems, our 24/7 emergency service reaches San Dimas fast.

Neighborhoods we cover

Downtown San Dimas, Via Verde, North San Dimas, San Dimas Canyon.

ZIP code we serve

91773

Don't see your ZIP listed? Call us at (909) 312-4516. We likely cover your area.

Common plumbing issues we see in San Dimas

Most of San Dimas is 1960s-80s tract housing, with older homes downtown and custom homes in the hills, and each has its own common problems.

  • Those tracts are losing flow to aging galvanized supply lines rusting from the inside.
  • Under-slab copper of the same age means slab leaks are common.
  • Homes near Via Verde and the canyon see storm-season drainage issues.
  • Hard water from Golden State Water scales heaters, and mature trees on the older streets work roots into sewer lines.
  • The older downtown citrus-era homes often need full repipes.

Our service area in San Dimas

License & coverage

CA CSLB License #889182 Β· C-36 Plumbing Contractor Β· $2M general liability Β· Bonded Β· Los Angeles County coverage. Verify our license at the CA Contractors State License Board.

Neighborhoods we serve

Working in your part of San Dimas.

What we see in each part of San Dimas:

Neighborhood

Downtown San Dimas

Older homes near Bonita and San Dimas Avenue. Aging galvanized is common.

Neighborhood

Via Verde

Custom homes: routine repairs and yearly pressure regulator testing.

Neighborhood

North San Dimas (above Foothill)

Custom homes above Foothill. Mostly standard repair work and yearly pressure regulator testing.

Neighborhood

San Dimas Canyon

Rural-feel custom properties. Larger irrigation runs, well-water carryover from older properties.

Working in San Dimas

The San Dimas plumbing landscape.

Housing stock

San Dimas grew from 1870s citrus ranches into a suburb after incorporating in 1960, keeping its early-California village theme downtown by ordinance. The result: most of the housing is 1960s-1980s tract construction, with older citrus-era homes near the historic downtown and newer custom homes in the hills, such as Via Verde near Bonelli Park and the San Dimas Canyon area.

Water service

Most of San Dimas is served by Golden State Water Company. Like the rest of Southern California, San Dimas gets high water pressure, which matters for regulators and backflow. It's hard water, which means heaters fill with sediment and aerators clog over time, and the foothill canyons bring drainage and debris concerns during winter rains.

Local landmarks & areas we know

If you're near Frank G. Bonelli Regional Park, Raging Waters, Puddingstone Reservoir or San Dimas Canyon Golf Course, you're in our regular service area.

Nearby cities and areas

La Verne Β· Pomona

Why San Dimas chooses us

Three reasons locals call us first.

01

Local enough to know your block

Our techs know San Dimas well: the neighborhoods, the lot layouts and the access routes.

02

We know San Dimas' housing

1960s-1980s tract construction makes up most of San Dimas, with some older homes downtown and newer custom homes in Via Verde, so we arrive knowing what to look for and ready to diagnose what isn't typical.

03

We work with Golden State Water Company

With Golden State Water Company, we know the backflow testing schedule and the paperwork the company requires. We test backflow devices on its schedule and file the results with Golden State Water for you.

What we fix in San Dimas

What we fix in San Dimas: every pipe, every fixture, every problem.

In San Dimas specifically, the most common calls we get are for aging galvanized supply lines in 1960s-1970s tract homes and sewer line root intrusion in older neighborhoods with mature trees. But the full range of work we do in San Dimas includes:

Urgent Calls

Active leaks, no water, and sewer backups. Dispatched to San Dimas 24/7.

Water Heater Service

Tank, tankless, gas, electric, hybrid. As an A.O. Smith Authorized Service Contractor, we install and service the right heater for your home.

Slab Leak Repair

We find and fix slab leaks in homes across San Dimas. We pinpoint them electronically and acoustically, keeping demolition to a minimum.

Gas Line Repair

Licensed gas service for San Dimas, home or business. Every line is pressure-tested and leak-checked before we leave.

Drain Cleaning & Hydrojetting

In San Dimas' older homes, the sewer laterals are often cast iron or clay, with root intrusion. Cable for blockages, hydrojet to clear roots and grease. Camera inspection on every main line.

Whole-Home Repipe

Older San Dimas homes with original galvanized piping are the usual candidates. We replace with PEX or copper, phase the job and patch any drywall we open.

Sewer Line Replacement

Cast-iron, clay and ABS sewer lines in San Dimas. Trenchless pipe bursting and pipe lining when the line allows, which can save the yard and the driveway.

Backflow Testing

Annual testing & certification for Golden State Water Company requirements. We file the paperwork directly with Golden State Water on your behalf. We also install and repair backflow preventers.

Commercial Plumbing

Restaurants, retail, multi-unit and office properties in San Dimas. Flexible, after-hours scheduling around your operating hours.

Nearby cities

Cities near San Dimas we also serve.

Sweetwater Plumbing's service area extends across San Bernardino, Riverside and eastern Los Angeles counties.

Los Angeles County

La Verne

91750
Los Angeles County

Pomona

91766 Β· 91767 Β· 91768

Not on the list? Call us at (909) 312-4516. We serve 24 cities across the Inland Empire.

Common Questions in San Dimas

Frequently asked questions about plumbing in San Dimas.

What kinds of plumbing problems are common in San Dimas?
In San Dimas, the most common calls we get are for failing galvanized supply lines in 1960s-1970s tract homes and sewer root intrusion on older streets with mature trees. Most of the city is 1960s-1980s tract construction.
How long has Sweetwater Plumbing served San Dimas?
Sweetwater Plumbing has been serving San Dimas and the surrounding Inland Empire since 2010 as a licensed, family-owned plumbing contractor. We've completed thousands of jobs across our service area.
Do you work with the local water provider in San Dimas?
San Dimas is mostly served by Golden State Water Company. We're familiar with its water hardness and requirements (including backflow testing and certification paperwork).
Can you handle older homes in San Dimas?
Absolutely. Many of our calls in San Dimas involve older homes: we repipe, replace cast iron, and work carefully around original finishes.
Do you offer 24-hour service in San Dimas?
Yes. We answer calls 24/7 and dispatch right away for active leaks, no water and sewer backups. If you smell gas, leave the house first and call SoCalGas at 1-800-427-2200 and 911 from outside. Most non-urgent calls booked before noon are handled the same day.
What if I'm not satisfied with the work?
We stand behind our work in San Dimas. If we fall short in any way, call John Howe personally, anytime, day or night, at (909) 247-6791, and he’ll make it right.
What customers say

Real reviews from real customers.

β˜…β˜…β˜…β˜…β˜…4.8 / 5 average
Β· View all 588+ Google reviews β†’
LP
Linda Plum
β˜…β˜…β˜…β˜…β˜… Dec 2025
GOOGLE

Freddie and his crew were very professional respectful kind and understanding. I had my mobile home completely repiped and did little extra for me. Now I am set in My forever home knowing I have new and good pipes and water heater. I can not thank you enough.

SM
Salvador Morano
β˜…β˜…β˜…β˜…β˜… Sep 2026
GOOGLE

Angel Gonzalez did a great job and was very professional. He advised us on good ways to clean our drains and keep them odor-free. Thank you for your excellent customer service, Angel!

AF
Aaron Foley
β˜…β˜…β˜…β˜…β˜… Apr 2026
GOOGLE

John and his team have been extremely helpful in alleviating my plumbing issues on two separate occasions now, and I would not hesitate to recommend them.They have been very clear about estimates, scope of work, have arrived promptly at decided start times…

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