Leaks7 Signs of a Hidden Water Leak in Your Home
The most expensive leaks are the ones you can’t see. Here are seven signs your home is leaking behind the scenes, and how to confirm it in five minutes.
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Leaks
Warm floors, low pressure, or the sound of running water under concrete? We find and fix it.

Yes — we handle slab leak detection and repair in Bend, OR, and the job begins with finding the leak, not breaking up your floor. A slab leak is a pressurized water line failing beneath the concrete foundation your house sits on, and because it's sealed under the slab it can run for weeks before the signs add up. We pinpoint it with electronic equipment, show you the honest options, and fix it with as little disruption as the pipe allows.
Cross the kitchen barefoot and feel a spot warmer than the tile around it. Hear water moving when nothing's running. Watch your water heater cycle more than it used to, or a thin crack work its way across the concrete. Any one of these can mean a supply line is leaking under your foundation. Left alone, a slab leak doesn't stay small — it undermines the slab, feeds mold, and quietly wastes water every hour of every day. The sooner it's found, the smaller the fix.
Your home's water lines don't stop at the walls. Some of them run through or beneath the concrete slab your house sits on. When one of those hidden pipes springs a leak — from corrosion, abrasion against the concrete, a bad fitting, or plain age — the water has nowhere obvious to go. It saturates the ground under your foundation, warms a section of floor if it's a hot line, and shows up on your bill long before it shows up as a puddle.
There are two kinds. A leak on a hot line often gives itself away with a warm patch of floor. A leak on a cold line is quieter and usually found by pressure and sound. Either way, the pipe is under load around the clock, so a pinhole today is a bigger problem next month.
Slab leaks are sneaky by nature, but they do leave tracks:
If you're seeing a couple of these together, don't wait it out. Our rundown of the warning signs of a hidden water leak goes deeper, and the same instinct applies here: trust the clues and get it checked before the damage spreads into the framing and flooring.
This is more than a quick look and a guess. When you call us out for a slab leak, the visit covers:
You get the diagnosis and the plan before you commit to the fix. No surprises mid-job.
Precise location is the difference between a small, targeted opening and a torn-up floor, and it's where our leak detection experience really pays off. The mistake to avoid is opening the concrete on a hunch — jackhammering a slab on a guess is how a modest repair becomes a demolition.
Once we know exactly what we're dealing with, we lay out the honest trade-offs so you choose the path, not us:
There's no single right answer. The best choice depends on the pipe's condition, how accessible the leak is, and how much life the rest of the system has left. We'll walk you through it plainly, and if a reroute or repipe makes more sense than chasing one leak under the concrete, we'll tell you why.
We price it flat and upfront, but a few things shape the scope: the leak's depth and position under the slab, the flooring on top of it (plain concrete versus tile, hardwood, or finished surfaces), whether a spot repair or a full reroute is the wiser fix, how much of the line is corroded, and any restoration afterward. Access matters too — a leak under a kitchen island or a closet is harder to reach than one in an open room. Rerouting away from the slab often costs less in the end than repeatedly breaking and repouring concrete. Whatever the path, you'll approve the flat price before we start.
A slab leak isn't the job to hand to whoever's cheapest or quickest to pick up. It rewards careful location and honest advice, and that's what we do:
Slab leaks show up most in slab-on-grade houses running aging copper or older piping — and Central Oregon's hard water speeds things along, corroding pipe from the inside until a pinhole opens. In homes built from the 1970s through the '90s, the original plumbing may be part of the problem to begin with; our look at polybutylene and galvanized pipe in Bend homes explains why that era of pipe fails. If the buried line feeding the house from the meter is the weak link instead, that falls under water line repair and replacement — we'll tell you which one you've got, and won't sell you the bigger job if the smaller one fixes it.
We find and fix slab leaks throughout Bend and the surrounding communities. That includes the older slab-on-grade homes in Old Bend, the established and newer neighborhoods of Redmond, and homes out in Sisters. Wherever you are in the area, the approach is the same: locate it precisely, explain your options, and fix it with the least disruption the job allows.
A slab leak is one of those problems that only gets more expensive the longer it hides. If your floor has a warm spot, your pressure has slipped, or you can hear water you can't find, call Bend Plumbing Services at (207) 419-2600. We'll locate it precisely, explain your options without pressure, and fix it with as little disruption to your home as the job allows. You can also reach us through our contact page to set up a visit.
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Answers to the questions Bend homeowners ask us most about slab leak detection & repair.
It is a leak in a water line running beneath your home’s concrete foundation. Because the pipe is hidden under the slab, these leaks are easy to miss until they raise your bill, warm a section of floor, or crack the concrete.
We locate it precisely first, then choose the least-invasive repair — a targeted spot repair, a reroute of that line, or a repipe if the plumbing is failing throughout. We explain the trade-offs so you can choose.
They show up most in slab-on-grade homes with aging copper or older piping, and hard-water corrosion accelerates them. If you see the warning signs, do not wait — slab leaks only get more expensive.
Yes, over time. Water pooling under the slab softens the soil it rests on, which can lead to settling, cracks in the concrete, and uneven floors. It also invites mold and rots framing where it wicks up. That's why we treat slab leaks as urgent — the pipe repair is straightforward, but the damage around it grows the longer the leak runs.
Most spot repairs are a same-day job once we've pinpointed the leak — locating it precisely is the part that takes care. A reroute usually runs a day, sometimes two, depending on the path through your walls. A full repipe takes longer. We give you a realistic timeline with your flat quote, before any work starts, so you can plan around it.
LeaksThe most expensive leaks are the ones you can’t see. Here are seven signs your home is leaking behind the scenes, and how to confirm it in five minutes.
Read article
Pipes & RepipingTwo pipe materials in Bend’s older homes are known to fail. Here’s how to tell if you have them — and how to think about repiping before they let go.
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Rising water bill or a damp spot? We pinpoint hidden leaks without tearing your house apart.
Learn moreFailing polybutylene or galvanized pipe? We repipe in PEX with minimal disruption and clean drywall.
Learn moreFrom the meter to your home — we repair or replace failing main water lines, wet spots and all.
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Tell us what's going on and we'll get right back to you with a plan and an honest price. Or call (207) 419-2600 — we answer 24/7.
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