Why slab leaks are common in Greenwood homes
A large share of the houses built in Greenwood since the 1990s, on both sides of I-65 and out toward Smith Valley and Worthsville Road, sit on a concrete slab with the water lines running through the gravel and soil underneath. Older homes around Old Town and Madison Avenue are more often on crawl spaces or basements, but many of them had additions or kitchens moved onto slabs later.
Three things put those buried lines under stress here. Central Indiana’s clay-rich glacial soil swells when it’s wet and shrinks when it dries, so the ground under a slab is never completely still. Greenwood’s water comes from groundwater wells run by Indiana American Water, and like most well water in the region it is hard, which leaves scale inside copper lines and speeds up wear where pipes rub against gravel or concrete. And a hot water line under a slab expands and contracts every time someone showers, which slowly works a pipe against whatever it touches.
Signs of a slab leak in your Greenwood home
- A warm or hot spot on the floor, often on tile in a kitchen, bathroom or hallway. That points to a leak on the hot side.
- The sound of running water under the floor when every faucet, toilet and appliance is off.
- A water meter that keeps moving with nothing running. The small leak indicator on the meter is the quickest tell.
- A water heater that runs constantly or a gas bill that jumps along with the water bill.
- Damp carpet pad, cupping wood floors or swelling baseboards with no plumbing fixture nearby.
- A water bill that jumps from one month to the next without a change in how you use water.
One sign is enough to check; two together usually means a leak. A warm floor alone can also be a heat duct in the slab, which is one more reason to test before anyone breaks concrete.
Think you have a leak? Call and tell us what you’re noticing in your Greenwood home.
(877) 729-0265Test your meter before you call
- Shut everything offTurn off faucets, the dishwasher, washing machine, ice maker and sprinklers. Make sure no toilet is refilling.
- Find the meterIn most of Greenwood it sits in a pit near the curb or sidewalk. Lift the lid carefully and look for the small triangle or star-shaped leak indicator.
- Watch for 15–30 minutesIf the indicator turns, or the reading changes, water is leaving the pipes somewhere on your side of the meter.
- Close the main shutoff in the houseIf the meter stops, the leak is inside the house or under the slab. If it keeps going, the leak is in the buried line in the yard; see water line leak detection in Greenwood.
- Close the water heater’s cold supply valveIf the meter stops when only the water heater is isolated, the leak is likely on the hot side, which matches a warm spot on the floor.
How we find a slab leak without breaking the floor
Every Greenwood slab leak call follows the same order, because each step narrows the search before the next one starts.
Confirm and isolate
We read the meter, then close valves to separate the hot side, the cold side and any branch lines. This tells us which pipe is leaking before any equipment comes out.
Pressure test
The suspect line is pressurized and watched on a gauge. A steady drop confirms it’s the leaking line and roughly how fast it’s losing water.
Trace the pipe route
Slab lines rarely run in a straight line. We trace the route under the floor so we listen along the pipe, not across the whole room.
Listen and scan
An acoustic ground microphone picks up the hiss of water escaping under pressure, and a thermal camera shows the heat pattern a hot-side leak leaves on the floor surface.
Mark and document
The spot is marked on the floor with tape or a marker, and you get photos and notes showing the readings, the line and the location.
Slab construction in Greenwood that affects the search
| What’s on top | What it means for detection |
|---|---|
| Tile over slab | Sound carries well and heat shows clearly, so hot-side leaks are often the easiest to pinpoint. |
| Carpet over slab | Padding dampens sound; we listen at more points and lean on thermal imaging and moisture readings. |
| Engineered wood or LVP | Floating floors trap moisture underneath; cupping or soft spots are common clues. |
| Garage or patio slab | Lines that pass under the garage are often deeper and colder; pressure testing does most of the work. |
After the leak is marked
You choose what happens next. Our plumbing partner can make the repair, either a spot repair through one small opening at the mark or a reroute that abandons the old line under the slab and runs a new one through the walls or attic. If you already have a plumber, we hand them the mark and the report.
See slab leak repair in Greenwood for how each repair works, and does homeowners insurance cover slab leaks? before you file a claim. Many policies pay for the damage and for access to the pipe, but not for the pipe itself.
Slab Leak Detection: questions from Greenwood homeowners
How do I know if I have a slab leak in Greenwood?
Turn off all water in the house and watch the leak indicator on your meter. If it moves and stops again when you close the main shutoff in the house, the leak is inside, often under the slab. A warm spot on the floor or a water heater that never shuts off points to the hot side.
Can a slab leak be found without breaking the floor?
Yes. Detection uses line isolation, pressure testing, acoustic listening and thermal imaging. The floor is only opened at the marked spot, and only for the repair.
Is a warm floor always a slab leak?
No. Heat ducts in the slab, a radiant heating loop or sun on tile can also warm a floor. That’s why we confirm the leak with the meter and a pressure test before anything else.
Will my water utility find a slab leak for me?
Indiana American Water and the Bargersville utility are responsible for their main and the line up to their shutoff near the curb. A leak under your house is on the homeowner’s side, so it is yours to locate and repair.
How long does slab leak detection take?
Most slab leak visits take a couple of hours, depending on how many lines need testing and what flooring is on top. Homes with more than one leak take longer.
Guides that go deeper
Sources: Indiana American Water; Town of Bargersville Water Utility; Indiana 811; Indiana Administrative Code, Title 327. Updated October 1, 2026.