JA
John Amos
★★★★★
Apr 2026
GOOGLE
Freddy worked his tail off without stopping. Had to dig 4 feet down to find leaking water pipe. Cleaned the bathroom professionally. Never knew he was there after cleaning up.
Signs you have a slab leak
Catching it early.
Slab leaks rarely announce themselves with a dramatic flood. The signs are subtle:
- Warm spot on the floor (a leak in the hot water line)
- Sound of running water when nothing is on: put your ear to the floor in different rooms
- Water bill spike with no obvious cause
- Cracking in drywall, foundation, or tile from shifting soil under the slab
- Mildew smell from baseboards or carpet that won't go away
- Low water pressure in part of the house but not the rest
- Wet spots on baseboards or carpet near the foundation
If you have any of these, get it checked. A slab leak can waste hundreds of gallons a day or more under your house, raising your water bill and soaking the soil under your foundation. If your bill has crept up and you are not sure why, our hidden water leak calculator can help you estimate whether a hidden leak is the cause.
How we find it
Find it first, then fix only what we need to.
We don’t open floors or walls to go looking. We pinpoint the leak first with the right tool for the job:
- Acoustic listening equipment hears water escaping under the slab or inside a wall.
- Electronic line tracing maps where the pipe actually runs.
- Thermal imaging shows hot water lines leaking under the floor.
- Food-grade tracer dye confirms where water is going on drains and fixtures.
Then you choose the repair. You get your options in writing, each with one flat-rate price, before any work begins:
- Spot repair: open the floor at the leak and fix that section of pipe.
- Reroute: abandon the leaking line under the slab and run a new one.
- Repipe: when the copper is failing in more than one place, replace it, so the next leak doesn’t follow.
Afterward we patch any drywall we open, and on a slab leak we help you with the insurance paperwork. More about whole-home repiping →
Service Area
Serving 24 cities across the Inland Empire.
Chino · Chino Hills · Claremont · Colton · Corona · Diamond Bar · Eastvale · Fontana · Grand Terrace · Highland · La Verne · Loma Linda · Mira Loma · Montclair · Norco · Ontario · Pomona · Rancho Cucamonga · Redlands · Rialto · Riverside · San Bernardino · San Dimas · Upland
What customers say
Real reviews from real customers.
SP
Sandra Pinela
★★★★★
Dec 2025
GOOGLE
Very professional and Honest! They came on time, check my shower, found the leaked and repaired all with in 4 hours. I am very happy with they service and honestly I highly recommend.
KT
Kelly Torres
★★★★★
Dec 2025
GOOGLE
Freddy, Matt, John, Angel, and everyone else at Sweetwater is 100% 10/10 highly recommend. They have worked on all my plumbing at this point between installing a neat hot water heater, main water lines, and general plumbing issues. They cover it all with…
Common Questions
Frequently asked questions.
How much does leak detection cost in the Inland Empire?
We look at the job first, then give you your options in writing before any work begins, each with one flat-rate price. The price you approve is the price you pay. Our customers tell us our pricing is honest and fair. Financing through Wisetack is available on jobs over $500, so you can spread the cost of a slab leak repair over monthly payments. Checking your financing options won’t affect your credit score.
Are you licensed for leak detection in California?
Yes. Sweetwater Plumbing is a licensed C-36 Plumbing Contractor (California CSLB #889182), fully bonded with $2M general liability insurance.
Where do you offer leak detection?
We provide leak detection throughout the Inland Empire, including Montclair, Ontario, Upland, Rancho Cucamonga, Chino, Chino Hills, Pomona, Claremont, Fontana, Riverside, and 14 other cities. Call (909) 312-4516 to confirm coverage.
Does homeowners insurance cover a slab leak?
It depends on your policy. Many policies treat the pipe repair itself differently from the cost of reaching the pipe (opening the floor or a wall) and from any water damage the leak caused, and some exclude slow leaks that went on for a long time. Check your policy or ask your agent. We document what we find, with photos, and help you with the insurance paperwork.
How do digital leak detection methods compare with traditional leak detection?
In a comparison of the two, traditional methods meant opening floors or walls where the water showed up and searching from there. Digital leak detection finds the leak first, with acoustic listening equipment, thermal imaging and electronic line tracing, plus food-grade tracer dye, so we open only the spot where the leak is. That means less damage to your home and less to put back afterward.