Leak Detection Services in Antioch, CA
Find Your Hidden Leak Without Breaking Your Floor
Your water bill jumped $300, and every tap is off. The meter dial still spins. That’s a hidden leak, and it won’t wait. Nancy’s Plumbing offers leak detection services Antioch CA homeowners trust, using sound-sensing tools to find the leak before we open a wall. We serve homes from Rivertown to Deer Valley.
Who Is the Best Leak Detection Company Near Me in Antioch, CA?
4.9-star Google rating across 210+ reviews
CSLB License #987417, bonded and insured
Flat-rate pricing, charged by the job
Woman-owned, family-run, 24+ years
"They responded quickly, fixed my leaking faucet, and were very polite throughout the process."
Want to know what a free house call covers? Keep reading.
What Leak Detection and Repair Services Do You Offer in Antioch, CA?
Non-Invasive Acoustic Leak Detection
This is the first step for underground water leak detection Antioch homes need. Sensors hear the leak, so you keep your floors. Antioch homes built on concrete slabs hide their pipes, so finding the spot first saves time and repair costs.
Slab Leak Detection and Pipe Rerouting
Our slab leak detection Antioch CA service suits the 1960s–1980s tract homes in Sycamore, Mira Vista, and Lone Tree. Those homes have soft copper under the slab. A new overhead line fixes the problem for good without breaking your floor.
In-Wall and Ceiling Pinhole Leak Repair
A leaky pipe in a wall soaks drywall fast. Hard water in Antioch, moderately hard to hard, can pit pipes from the inside. A small opening stops the water and keeps the drywall repair small.
Main Water Line and Underground Pipe Repair
Wet winters soak the Delta water table and stress buried pipes. If your yard stays soggy or your pressure drops, the main line may be leaking. A fix restores pressure and stops water loss.
Whole-Home Copper Repiping
Many 1940s–1950s Rivertown bungalows still have galvanized steel pipe. Rust and low flow are common there. New pipe gives you long-term peace of mind. Our team also does copper pipe repair Antioch CA when a full repipe isn’t needed.
Since 2013, we've completed thousands of jobs across East Contra Costa County. We even re-engineered a 35-unit mobile home community sewer system with city engineers.
How Do You Find a Hidden Leak in Antioch Without Tearing Up My Home?
Call or
Book Online
Call (925) 350-0182 or use the online scheduler. You get text alerts that track your technician’s arrival. Active leaks get 24/7 dispatch.
listen
and test
A licensed technician uses acoustic sensors and pressure tests to find the break. You skip the guesswork.
see your options
and price
Your technician explains the source and your choices. You get a flat-rate price before any work starts.
Repair and
clean up
We fix the pipe with American-made copper or PEX and pressure-test the fix. Floors stay covered, the area gets cleaned, and we coordinate restoration follow-up.
How Can a Plumber Find a Leak Under My Slab Without Digging?
Electro-acoustic listening discs
Pick up faint water sounds through concrete → you know the exact spot before anyone cuts anything.
Line pressure testing
Isolates the failed pipe → you avoid repairing the wrong section.
Overhead reroutes through attic and walls
Replace failed slab lines → your tile and hardwood stay in place.
Automated text dispatch and digital invoicing
Keep you updated → you never wait wondering when we’ll arrive.
Our leak detection equipment has helped us find leaks in under an hour.
Which Antioch Homes and Businesses Do You Help With Leaks?
From Historic Rivertown cottages to homes off Lone Tree Way and Deer Valley Road, we help many kinds of owners.
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Homeowners in 1960s–1980s slab homes in Sycamore, Mira Vista, and Lone Tree
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Owners of 1940s–1950s bungalows near Rivertown with older galvanized pipe
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Families in Deer Valley, Dallas Ranch, and Black Diamond homes with PEX systems
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Property managers with rentals across East Contra Costa
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Light commercial spaces with a wet wall or a spinning meter
If water is leaking, your property is losing money, and we’re here to stop it.
Where Do You Offer Leak Detection Near Me in Antioch, CA?
We serve homeowners across Antioch and the surrounding East Contra Costa communities.
Antioch Neighborhoods
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Historic Rivertown / Downtown
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Sycamore and Mira Vista
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Lone Tree and Deer Valley
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Dallas Ranch and Black Diamond
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Prewett Ranch, Hillcrest, and Hansen Park
We also travel to Brentwood, Oakley, Pittsburg, Concord, Walnut Creek, Discovery Bay, Bethel Island, Pleasant Hill, Livermore, and Berkeley. Don’t see your street? Call (925) 350-0182 and we’ll confirm coverage.
“We had a leak in the wall of our garage. Nancy’s plumbing came out right away and did all the work the next day. Chris was our tech. He was really kind and explained everything to us.”
– Deborah McKenzie
Google Review
“I was desperate to get someone out that same day, I had water running down my wall. They showed up super quickly, Chris my plumber found the issue and explained everything to me so I knew what was going on.”
– Hallie Fitzsimons
Google Review
QUESTIONS? WE'VE GOT ANSWERS
FAQ
That fear is fair, and a hole in your floor costs real money. We pinpoint the leak with acoustic sensors and pressure tests first. For slab leaks, we also offer overhead reroutes through walls and attic. That plan can keep your tile and hardwood in place.
Paying for a search before you know the price is stressful. We offer free house calls Monday through Friday, 9 AM to 6 PM. You get a written flat-rate quote before work starts. We charge by the job, not by the hour, so the number you hear is the number you pay.
Yes, and it can keep going unnoticed for weeks. A single pinhole leak can waste 200–1,000+ gallons a day. Check your main meter with every tap off. If the dial moves, you have water loss somewhere. We find the source with acoustic detection.
Many people worry a simple repair turns into a huge bill. Your technician explains the source of the leak and your options, such as a localized repair or a reroute. You see each price first. Repiping stays your choice, and it suits worn galvanized pipe best.
Waiting on a claim while water keeps flowing makes damage worse. We can’t promise what your plan covers. We can help with home warranty or insurance paperwork when needed. That keeps your repair moving while you wait on answers.
SMALL LEAKS, BIG PROBLEMS
What Does a Hidden Water Leak Really Cost an Antioch Home?
You hear water hissing behind the sheetrock, but every tap is off. Meanwhile, your bill keeps climbing.
Your Wallet Drains Fast
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A $300 water bill spike is just the start, unchecked underground leaks add hundreds monthly
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Contra Costa County water rates keep climbing, so every wasted gallon costs you twice
Your Foundation Takes the Hit
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Antioch's expansive clay soil expands and contracts with wet winters and dry summers
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Escaped water turns that clay into shifting ground that cracks concrete slabs and foundation footings
Your Health and Home Are at Risk
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Mold colonies grow inside walls within 24-48 hours of water intrusion
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Rot spreads through floor joists and cabinetry, turning a $400 repair into $15,000 in restoration
The cost adds up fast, and it grows each day. Nancy’s Plumbing finds the leak first.
Ready to Stop the Leak Before It Reaches Your Slab?
A leak doesn’t pause while you decide. Mold can start in 24–48 hours, and free house call slots are limited each day. Call (925) 350-0182 for 24/7 emergency leak dispatch, or book online for your free weekday house call. You get a flat-rate quote, our No Jackhammering Guarantee, and paperwork help. Wait, and the water keeps eroding your soil, your floors, and your budget.