Slab Leak Detection & Repair in Ontario
Slab leak detection and repair in Ontario, CA - historic raised-floor homes near Euclid Avenue to new Ontario Ranch builds. Open 24/7 with clear options.
Ontario's homes run from Victorian and Craftsman houses along Euclid Avenue to brand-new construction in Ontario Ranch, and their leak risks are close to opposite. Many historic homes near downtown sit on raised foundations, where leaks happen under the floor rather than inside concrete. Many post-war and newer homes, on the other hand, are built on slabs.
In Ontario Ranch, homes are new and mostly plumbed with PEX, which doesn't corrode the way old copper does. Leaks there tend to come from a fitting, a damaged line or a connection that wasn't made right. In older slab homes, worn copper or galvanized pipe is the usual suspect.
Serving Ontario 24/7
- A real person answers, day or night
- Up-front pricing before any work
- CSLB Lic. #798425
- IICRC-certified restoration crews
What's different about slab leak detection & repair in Ontario
Historic homes on raised floors
Around historic downtown and Euclid Avenue, a leak may never touch a slab. It drips into the crawlspace instead, soaking the subfloor and framing out of sight. We look under the floor first rather than assuming a slab leak, because that repair is usually simpler and cheaper.
Ontario Ranch and builder warranties
If your Ontario Ranch home is still new, check your builder's warranty. California's Right to Repair Act (SB 800) also sets standards for new homes, and claims that the plumbing doesn't work properly generally must be brought within four years after close of escrow. Stop the damage first, then document what failed.
Aging pipe in post-war homes
Many mid-century houses in Ontario's older neighborhoods have copper or galvanized lines that have been in place for decades. Once those lines start leaking, more leaks often follow, which is why a reroute or repipe deserves a serious look after the first one.
Who handles your meter
The Ontario Municipal Utilities Company serves most of the city, and Cucamonga Valley Water District serves some areas. Your utility handles problems on its side of the meter. If your meter shows flow with everything in the house shut off, the leak is on the property side, and that's the plumbing we repair.
Signs it's time to call
- A musty crawlspace or standing water under an older raised-floor home
- Damp flooring or swollen baseboards in a newer Ontario Ranch home
- Bills that rise even though your routine hasn't changed
- Warm spots on the floor over hot water lines in a slab house
- A meter dial that keeps turning with every tap closed
How we handle it in Ontario
We confirm the leak, figure out whether your home is on a slab or a raised floor, and test the hot and cold lines separately. Acoustic and thermal tools narrow the location under a slab; under a raised floor, we trace the pipe by hand. You then get honest choices: a spot repair for an isolated leak, a reroute that takes the line out of the slab, or a repipe for older copper and galvanized systems that keep failing. For a newer home under warranty, we'll record what we find so you have it for the builder.
Our IICRC-certified restoration techs can dry out wet flooring, framing or crawlspaces - see Ontario water damage restoration - and document the damage for your insurer. Insurance often treats resulting damage differently than the pipe repair, so read your policy or ask your agent what applies.
Ontario questions, answered
My Ontario Ranch home has a leak. Do I call the builder or a plumber?+
If water is actively leaking, shut off the main and get it stopped first - waiting only makes the damage worse. Then contact the builder about warranty coverage. We'll note what failed and where, which can support a warranty request. You can reach us anytime through our contact page.
Do historic Ontario homes get slab leaks?+
Many don't have slabs at all. Homes on raised foundations get under-floor leaks instead, and those can go unnoticed because nobody goes into the crawlspace. If your bill is up and you have a raised floor, the crawlspace is the first place to look.
Do you handle slab leaks in commercial buildings in Ontario?+
Yes, we work on commercial as well as residential properties, and we're available 24/7. Detection works the same way, though access and scheduling usually need more planning so the business can keep running.
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