“I have used Patriot Plumbing on many occasions and they are always very professional and provide excellent service. I recently had a slab leak and James was out within an hour detecting where the leak was coming from and how to fix it. Since the area I live in is prone to slab leaks, I decided to repipe the entire house instead of just fixing where the leak was coming from, and they immediately started the work. James, Mike, and Angel did a great job as always and I highly recommend them!”
Slab Leak Detection & Repair in Orange County & S. Bay/LA
Most homes in Los Angeles or Orange County are built on slab concrete. Water pipes and drain lines run below the concrete slab. Sometimes leaks develop in the pipes — caused by hard water and chloramines, or by ground movement that erodes the water lines.

Slab Leak Repair
Family-Run · OC, CA
Overview
When this happens, it is hard to miss. Your walls and ceilings may stain, a bubble may form, your floors will feel soaked, and your yard may flood. If not addressed immediately, mold may begin to form. Even the smallest pinhole leak can cause these problems. If you suspect a slab leak, don't delay in calling Patriot Plumbing.
When to call
Signs you need slab leak repair.
Spot any of these in your home? Don’t wait — the longer they’re ignored, the more expensive the eventual fix.
Warm or hot spots on the floor
Sound of running water when nothing is on
Sudden spike in your water bill
Cracks in flooring, walls, or baseboards
Mildew or musty smell near floor level
Top-Rated
Google · Yelp · Angie's List
CSLB #834662
Licensed · Bonded · Insured
30 Years Running
Angie's Super Service Award
BBB Accredited
Verified profile
Master Plumbers
IICRC-certified techs
Real customers
In their words.
“I have used this plumbing service on more than one occasion, and I am impressed by their work every time. Recently I had a slab leak and called Patriot. James and Dino came out the next day to investigate and figure out the best way to repipe the leaking plumbing line. Afterward, Fred, James, and Dino, the whole crew came and completed the job in just 2 days. They even handled the city permit process.”
“When no other plumber would come out to help us stop a huge fresh water leak, Fred came out on a Saturday night and helped us avoid thousands of dollars in damages to several wood condo floors. If I could give Patriot more stars than 5, I would.”
Common questions
Quick answers, before you call.
Still have a question? Reach our dispatch line 24/7 — a real person picks up.
How dangerous is a slab leak?
Left untreated, a slab leak can damage flooring, foundation, and structural framing — and create conditions for mold growth that affects indoor air quality.
Will you have to break up my floor?
Not always. We commonly use re-route methods that go around the slab rather than through it. When access through the slab is necessary we minimize the opening.
How quickly can you locate the leak?
Most slab leaks are pinpointed in the first visit using acoustic equipment and thermal imaging. From there we walk you through repair options.
Is repair cheaper than re-piping?
For a single localized leak, repair is typically cheaper. For homes with prior slab leaks or aged copper, re-piping is often the better long-term value.
Will my homeowner's insurance cover this?
Many policies cover the resulting water damage even when they don't cover the line itself. We can supply documentation to support a claim.
Related services
Same crew. Other trades.
Ready when you are
Let’s tackle your slab leak repair
today.
Two regional dispatch lines, free quote, no pressure. Master Plumbers on every truck.



