A slab leak is one of the most serious — and costly — plumbing problems a homeowner can face. When a water line or drain line beneath your concrete foundation develops a leak, the water has nowhere to go except into the soil beneath your slab, causing foundation damage, mold growth, and skyrocketing water bills. Ace Pelizon Plumbing & Rooter specializes in slab leak detection and repair throughout Covina and the San Gabriel Valley.
What Is a Slab Leak?
A slab leak occurs when one of the water supply lines or drain lines running beneath your concrete foundation begins to leak. In Southern California, slab leaks are extremely common — our soil shifts with seasonal moisture changes, putting stress on pipes. Older copper pipes also develop pinhole leaks from corrosion and mineral buildup over time.
Because the pipes are buried under concrete, slab leaks often go undetected for months — causing extensive damage before the homeowner realizes something is wrong.
Warning Signs of a Slab Leak
- Unexplained spike in your water bill
- Sound of running water when all fixtures are off
- Warm or hot spots on your floor (hot water line leak)
- Damp carpet, warped flooring, or wet baseboards
- Mold or mildew smell without a visible source
- Cracks appearing in floors, walls, or foundation
- Low water pressure throughout the home
How We Find Slab Leaks
We use electronic leak detection equipment — acoustic amplification devices and pressure testing — to pinpoint the exact location of the leak without tearing up your floor unnecessarily. We locate the leak precisely before recommending any repair, so you know exactly what you're dealing with and why.
Slab Leak Repair Options
Once we've located the leak, we'll evaluate the condition and location of the piping and explain the repair options available. Not every slab leak requires the same solution.
Spot Repair
For an isolated leak where the surrounding pipe is still in good condition, we may recommend accessing the damaged section through the slab and repairing or replacing that portion of pipe. This can be a practical option when there is no evidence of widespread piping deterioration.
Pipe Rerouting
In many cases, the better long-term solution is to abandon the leaking line beneath the slab and install a new water line through an accessible route, such as the walls or attic. Rerouting can avoid opening the concrete at the leak location and eliminates the failed underground section from the active plumbing system.
Partial or Whole-Home Repipe
If a slab leak is one of several leaks or the home's piping shows signs of widespread deterioration, repeatedly repairing individual leaks may no longer make financial sense. In those situations, we can evaluate whether a partial or whole-home repipe would provide a better long-term solution.
Our goal is to identify why the leak occurred—not simply repair the wet spot. We'll explain what we find and help you compare the cost, disruption, and long-term benefits of each appropriate repair option before any work begins.
Why Slab Leaks Need Immediate Attention
Every day a slab leak goes unrepaired, water is saturating the soil beneath your foundation. Over time this leads to soil erosion, foundation settling, and structural cracking — repairs that can cost tens of thousands of dollars. A slab leak caught early is a plumbing repair. Caught late, it can become a foundation crisis.
What's Included
- Electronic slab leak detection
- Acoustic leak location
- Pressure testing
- Spot slab leak repair
- Pipe rerouting
- Concrete repair after access
- Documentation for insurance claims
Why Homeowners Trust Ace for Slab Leak Repair
Slab leaks can be difficult to diagnose because the source of the water is often hidden beneath concrete, flooring, or walls. Our approach starts with accurately locating the leak, determining which line is affected, and explaining the repair options before any work begins.
Ace Pelizon Plumbing has been serving the San Gabriel Valley since 1957, and we've worked on plumbing systems in homes of all ages—from older properties with original copper piping to newer construction. Depending on what we find, we can help you compare a targeted repair, reroute, or broader piping solution based on the condition of the system and your long-term goals.
You'll receive upfront pricing before work begins, and we'll explain what we found so you can make an informed decision about the repair.