Slab Leak Detection & Repair in Richardson, TX

If you’ve got a warm spot on the floor, a water bill that jumped for no reason, or the sound of running water with every faucet off, there’s a good chance a pipe under your slab has failed. In Richardson, that’s one of the most common calls we get — and it’s almost always tied to two things: the age of the home and the ground it sits on.

Here’s the part most homeowners don’t know going in: finding the leak and fixing the leak are two separate jobs. Finding it is where the skill lives. Do that part right and the repair is straightforward. Skip it — or hand it to someone who guesses — and you end up with a torn-up floor and a leak that’s still leaking. We don’t work that way.

What is a slab leak?

A slab leak is a break in one of the pipes running underneath your home’s concrete foundation — either a pressurized copper water line or a cast-iron or PVC sewer line. Most North Texas homes are built “slab-on-grade,” meaning the concrete is poured directly over the plumbing and the dirt. When one of those buried pipes cracks, corrodes through, or pulls apart at a joint, the water has nowhere to go but into the soil, up through the slab, or out along the foundation.

Water-line leaks usually announce themselves faster — the line is under constant pressure, so it pushes water out quickly. Sewer-line leaks are sneakier. There’s no pressure behind them, so they can seep for months or years before anyone notices, quietly washing out the soil that holds your foundation level the whole time.

How do I know if I have a slab leak?

Most slab leaks show at least one of these signs before they become obvious. One on its own isn’t proof — but if you’re seeing two or more, it’s worth a test.

• A warm or hot spot on the floor. Heat under the slab almost always means a hot-water line is leaking. Texas homes don’t have radiant floor heat, so there’s no innocent explanation for it.
• A water bill that spiked with no change in usage. A line leaking under pressure runs 24/7. A sudden jump of $30–$100+ with nothing different at home is a classic tell.
• The sound of running water when everything is off. Turn off every faucet, appliance, and the irrigation, then listen near the floor or walls. A faint hiss or trickle points to a pressurized leak.
• Cracked or warm flooring, or damp spots. Tile that cracks in a line, flooring that buckles, or a patch of carpet or baseboard that’s damp with no roof or appliance above it.
• A persistent sewage smell. Rule out the obvious first, but a sewer odor that won’t go away can mean a broken drain line leaking under the slab.
• New doors that stick or fresh wall cracks. When a leak washes out the soil, the foundation shifts — and doors, windows, and drywall move with it.

There’s a simple at-home check for the pressurized kind: shut off every water source inside and out, go to your meter, and watch the leak indicator or the dial. If it keeps moving with everything off, water is escaping somewhere — and if you can’t find it above ground, it’s likely under the slab. That test tells you something is leaking. It doesn’t tell you where. That’s the next call.

Why are slab leaks so common in Richardson?

It’s also why slab leaks here cluster after weather swings. We see call volume climb in late summer when the clay is cracked and bone-dry, and again after the first heavy rains rehydrate it. If your neighborhood went through a hard drought-then-downpour cycle, that’s prime slab-leak season.

How do you find a slab leak without tearing up my house?

This is the whole game. We locate the leak before we open anything — using non-invasive equipment to pin down the spot, so the repair is precise instead of exploratory. Our detection uses three methods, layered together depending on the leak:

• Electronic line tracing & pressure testing to isolate which line is failing and roughly where it runs.
• Acoustic listening equipment that amplifies the specific sound of water escaping under concrete, narrowing the spot to within a small radius.
• Thermal imaging to read the temperature signature of a hot-water leak through the floor, and a sewer camera to inspect drain lines from the inside and find the break on screen.

For a suspected sewer leak we run a static (hydrostatic) test — we isolate the drain system, fill it with water, and watch whether it holds. If it drops, there’s a break, and the camera shows us exactly where. The point of all of this: when we do break concrete, it’s a targeted opening over a confirmed leak, not a fishing expedition across your living room.

How are slab leaks repaired?

There’s no single “right” repair — it depends on where the leak is, how the pipe was run, the age of the rest of the plumbing, and how much of the system is at the same risk. After we locate the leak, we walk you through the realistic options and what each one costs before any work starts. Here’s how they compare.

In 35 years of doing this across North Texas, the pattern we see most: on a home with original 1980s copper that’s already leaked once, the cheapest spot repair is often the most expensive choice in the long run, because the next leak on the same tired line is usually weeks or months away, not years. We’ll tell you straight which situation you’re in — and we won’t sell you a repipe you don’t need.

How we handle a slab leak call

What does slab leak repair cost in Richardson?

Anyone who quotes a slab leak over the phone without seeing it is guessing. The honest answer is that it depends on the detection, the repair method, and how the line was run — a single accessible spot repair sits at the low end, a reroute is more, and a full repipe is a larger project. What we can promise is no mystery math: a ~$69 service call fee that we credit toward the work, a written flat-rate price before we start, and a clear explanation of why one option costs what it does. We also offer financing, including 0% interest options, on larger repairs.

One more thing worth knowing: many homeowner policies cover the resulting damage from a slab leak (and sometimes access to the pipe) even when they don’t cover the pipe itself. We document what we find so you have what you need to file. We’re plumbers, not your insurer — check your policy — but good documentation helps.

Signs it’s time to call a plumber

Call us to test for a slab leak if you notice any of these — the earlier it’s caught, the less it costs and the less foundation damage it does:

• A warm spot on the floor, or a water bill that climbed with no change in habits.
• Running-water sounds with every fixture off, or low water pressure that came on suddenly.
• Damp flooring, cracked tile in a line, or a sewage smell you can’t track down.
• You’re buying or selling a Richardson home and want the water and sewer lines tested first.
• You’re having foundation work done — a slab leak test is usually required, and always smart, before piers go in.

One honest caveat: a plumber fixes the leak, not the foundation. If a long-running leak has already moved your slab, you may need a foundation engineer as well — we’ll tell you if we think you’re at that point and won’t pretend a pipe repair fixes structural movement.