If you are a homeowner or business owner in Rancho Cucamonga, 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. Rancho Cucamonga is large, with four ZIP codes covering Alta Loma in the north, Etiwanda to the east, and Old Cucamonga along Foothill. Tract homes built in the 1990s here are now hitting the age where original fittings are reaching the end of their service life. We see a lot of tankless conversion work in Alta Loma and Etiwanda where homeowners are upgrading from 40-gallon tanks.
Sweetwater Plumbing is a licensed, family-owned plumber (CSLB #889182) serving Rancho Cucamonga and the Inland Empire, rated 4.8 stars across 588+ reviews. We take urgent calls in Rancho Cucamonga 24/7, with same-day service for most non-urgent jobs booked before noon. Most of the city gets its water from the Cucamonga Valley Water District (CVWD). Call (909) 312-4516 24/7.
Most of our Rancho Cucamonga calls fall into four kinds of work, from the foothill homes in Alta Loma to the older Cucamonga neighborhoods and the newer Etiwanda tracts.
Repair and replacement of tank and tankless water heaters. Cucamonga Valley Water District water is hard, so scale shortens heater life here. We’re an A.O. Smith Authorized Service Contractor, and whenever an expansion tank is part of the job, we set its air charge to match your home’s water pressure before it goes in, which matters with the high water pressure common across Southern California.
Copper lines under the slab in older tracts can develop pinhole leaks. We find the leak with electronic and acoustic detection, then fix it the right way for your house: a spot repair, a reroute, or a repipe. We patch the drywall when a job needs it and help with the insurance paperwork.
Whole-home water repipes in PEX or copper to end repeat leaks in aging galvanized and copper systems, plus gas line replacement and new gas lines for tankless and appliance upgrades. Every gas line is pressure-tested and leak-checked.
Older Cucamonga and Etiwanda homes often have cast-iron or clay sewer lines. We camera the line first so you see the problem, then reline or burst it without digging up the yard, make a spot repair, or replace it when that’s the better fix.
Not sure what you need? Call (909) 312-4516 or text a photo to (909) 247-6791, and we’ll tell you straight.
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 Rancho Cucamonga. For urgent problems, our 24/7 emergency service reaches Rancho Cucamonga fast.
Alta Loma (north of Base Line), Etiwanda (east), Old Cucamonga (south, near Foothill), Terra Vista, Victoria Gardens area.
91701 · 91730 · 91737 · 91739
Don't see your ZIP listed? Call us at (909) 312-4516. We likely cover your area.
Rancho Cucamonga came together in 1977 from three communities (Alta Loma, Cucamonga, and Etiwanda), so its housing ages are all over the map.
CA CSLB License #889182 · C-36 Plumbing Contractor · $2M general liability · Bonded · San Bernardino County coverage. Verify our license at the CA Contractors State License Board.
What we see in each part of Rancho Cucamonga:
1960s-1970s tract homes. Galvanized repipes and aging water heaters are the most common calls here.
Mostly 2000s+ master-planned construction, with older homes in historic Etiwanda. Calls here are mostly tankless conversions and water heater service.
Older neighborhoods along Archibald and Foothill. Sewer mainline work is more common here.
1980s-1990s tract: typical aging supply line and slab leak work.
Mix of newer residential and heavy commercial. We service the retail and restaurant district here.
Rancho Cucamonga is really three old communities (Cucamonga, Alta Loma, and Etiwanda) that voted to become one city in 1977, and that history still shows in the housing. Alta Loma climbs into the San Gabriel foothills with 1960s-70s homes and larger half-acre lots up above Banyan. The central city is mostly 1980s-2000s tract built during the post-incorporation boom. Etiwanda and the Victoria Gardens area (the lifestyle center that opened in 2004 and serves as the city's downtown) are newer 2000s-and-later construction. Long before any of it, the area was vineyard and winery country.
Rancho Cucamonga is served by the Cucamonga Valley Water District (CVWD). Like the rest of Southern California, the city gets high water pressure, so regulators matter. The water here is hard, which leaves scale on fixtures and shortens heater life across town.
Find your local water department in our Inland Empire directory →
Our techs know Rancho Cucamonga well: the neighborhoods, the lot layouts and the access routes.
Rancho Cucamonga's housing is mostly 1980s-2000s tract construction, so we arrive knowing what to look for and ready to diagnose what isn't typical.
With Cucamonga Valley Water District, we know the backflow testing schedule and the paperwork the district requires. We test backflow devices on the district's schedule and file the results with the district for you.
In Rancho Cucamonga specifically, the most common calls we get are for water heaters, slab leaks, water and gas repiping, and sewer repair and replacement. But the full range of work we do in Rancho Cucamonga includes:
Active leaks, no water, and sewer backups. Dispatched to Rancho Cucamonga 24/7.
Tank, tankless, gas, electric, hybrid. As an A.O. Smith Authorized Service Contractor, we install and service the right heater for your home.
We find and fix slab leaks in homes across Rancho Cucamonga. We pinpoint them electronically and acoustically, keeping demolition to a minimum.
Licensed gas service for Rancho Cucamonga, home or business. Every line is pressure-tested and leak-checked before we leave.
In Rancho Cucamonga's 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.
Older Rancho Cucamonga homes with original galvanized piping are the usual candidates. We replace with PEX or copper, phase the job and patch the drywall afterward.
Cast-iron, clay and ABS sewer lines in Rancho Cucamonga. Trenchless pipe bursting and pipe lining when the line allows, which can save the yard and the driveway.
Annual testing & certification for Cucamonga Valley Water District requirements: we file the paperwork directly with the district on your behalf. We also install and repair backflow preventers.
Restaurants, retail, multi-unit and office properties in Rancho Cucamonga. Flexible, after-hours scheduling around your operating hours.
Sweetwater Plumbing's service area extends across San Bernardino, Riverside and eastern Los Angeles counties.
Not on the list? Call us at (909) 312-4516. We serve 24 cities across the Inland Empire.
Real work from our crews in Rancho Cucamonga.
My water heater was not heating water anymore. Called Sweetwater Plumbing and John was of great help and full of information. Plus his response time to get job done was on point. The gentlemen that came out to do repairs were quick and professional.Thank…
I had a problem with the sink water building up and not draining. After trying to unclog it I called Sweetwater Plumbing and they sent technician Angel out to assess the issue. I explained to Angel the issue and he knew what to do right away. After running…
Sweetwater Plumbing is my go-to place for all my plumbing needs. In fact, I tend to save up plumbing work until something big needs attention. Today, I had three separate jobs. The plumbers were on time, wearing neat and orderly work clothes. They wore…
