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Slab Leak Repair in the Inland Empire

A slab leak happens when a water line under your home’s foundation starts to leak, often silently for weeks before anyone notices. Left alone, it can warp flooring and drive up your water bill fast. Most spot repairs are completed in a single day once the leak is located and confirmed.

Slab Leak Detection & Repair

Gabriel Ruiz has spent more than 20 years in the plumbing trade, and slab leaks are some of the trickiest calls his team takes. A leak under a concrete slab does not always show itself right away. By the time you notice a warm spot on the floor or a spike in your water bill, the leak may have been running for a while.

The basics

What a Slab Leak Is and Why It’s Serious

A slab leak is a break in a water or drain line that runs underneath your home’s concrete foundation. Because the pipe is buried in or under the slab, the leak is hidden from view, which is exactly what makes it dangerous. Water can travel along the path of least resistance, showing up nowhere near the actual break.

Over time, an undetected slab leak can quietly drive up your water bill, warp flooring, and undermine the structural integrity of your foundation. Household leaks nationwide waste close to 10,000 gallons of water a year on average (Source: U.S. Environmental Protection Agency, 2023), and a slab leak left alone can waste far more than that before anyone notices. We have opened up floors where the homeowner had no idea anything was wrong until the flooring started to lift.

How we find it

Our Detection Process

We do not guess where a slab leak is coming from, and we do not cut open your floor to go looking for it. Our technicians use electronic leak detection equipment that listens for the sound of water escaping under pressure, along with pressure testing to isolate which line is affected.

This process lets us confirm the leak’s location before any demolition starts, so the repair itself stays as targeted as possible. Once we know exactly where the problem is, we walk you through the repair options and put the scope of work in writing.

Your options

Repair Methods

There is more than one way to fix a slab leak, and the right method depends on the pipe’s condition, location, and age.

Spot Repair

Spot repair means opening a small section of slab directly above the leak, replacing the damaged section of pipe, and patching the concrete. This works well when the rest of the line is in good shape.

Pipe Re-Route

Pipe re-route takes a different path, running a new line through walls or the attic instead of back under the slab, which can be faster and less disruptive when slab access is difficult.

Epoxy Pipe Lining

Epoxy pipe lining coats the inside of the existing pipe, sealing small leaks and corrosion without major excavation, and it can be a good fit for older copper lines with multiple weak spots.

We will recommend the method that fits your specific situation once detection is complete.

Know the symptoms

Signs You Need Slab Leak Repair

A few warning signs tend to show up before a slab leak becomes an emergency.

A warm or damp spot on an otherwise cool floor, especially near a water heater or laundry area.
A water bill that jumps with no clear explanation, like a new appliance or extra guests.
The sound of running water when every fixture in the house is off.
Cracks in flooring or baseboards that appear without any other cause.
Low water pressure in one part of the house while the rest seems normal.

If any of this sounds familiar, it is worth having a technician take a look before the damage spreads further.

Also Serving

Your Whole-Home Plumbing Needs

Slab leaks are not the only reason your pipes might need attention. If your water heater is aging out or you are considering a switch to tankless, our water heater installation page walks through tank, tankless, and hybrid options, along with what a proper installation involves. And if your home has had more than one slab leak, or the pipe itself is old galvanized or polybutylene, a full whole-house repipe may end up being the more practical long-term fix instead of repeated spot repairs. We serve homeowners across Eastvale, Fontana, Ontario, Rancho Cucamonga, and Riverside for all of these services. Visit our Inland Empire service area page to see where we work near you.

Good to know

Frequently Asked Questions

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

We use electronic leak detection equipment that picks up the sound of water escaping a pressurized line, combined with pressure testing to narrow down which line is affected. This lets us confirm the leak’s approximate location before we open any concrete, so we are not guessing or cutting more than necessary.

Is a slab leak an emergency

It depends on how long it has been leaking and how much water is involved. A slow leak may not need same-day attention, but a sudden drop in water pressure or a fast-rising water bill is worth calling about right away. When in doubt, it is better to have it checked than to wait.

Will you need to break up my entire foundation?

Usually not. Most slab leak repairs only require opening a small section of concrete directly above the confirmed leak location. In many cases, a pipe re-route or epoxy lining can avoid breaking into the slab at all, depending on the pipe’s condition and location.

What causes a slab leak in the first place?

Slab leaks are usually caused by pipe corrosion, ground shifting, or friction between the pipe and the slab or surrounding soil over time. Older copper lines are especially prone to this kind of wear, which is one reason repeat leaks sometimes point toward a bigger repipe conversation.

Do you offer any kind of warranty on slab leak repairs?

We stand behind our repair work and will walk you through the specific warranty terms for your job before we start, since terms can vary by repair method. Ask your technician for the details in writing along with your quote.

How do I know if it’s a slab leak versus a different plumbing problem?

A warm spot on the floor, an unexplained rise in your water bill, or the sound of running water when everything is off are the most common signs. A technician can confirm what you are dealing with using detection equipment rather than guesswork.

Get Your Written Quote Today

A slab leak only gets more costly to ignore. Request your written quote and we will schedule a technician to confirm the leak’s location and walk you through your repair options. Royalty Plumbing Inc will explain everything in writing before any work begins.