Fort Worth is really two housing markets, and slab leaks look different in each one. Established neighborhoods have decades-old pipe under the slab. The newer north and west sides are full of post-tension slabs where a leak has to be pinpointed before anyone cuts.
The right fix depends on what’s under your specific house. For homes outside Fort Worth, see our slab leak repair across Dallas-Fort Worth, or explore all of our plumbing services in Fort Worth.
Why do Fort Worth homes get slab leaks?
Established Fort Worth has a lot of older pipe. U.S. Census (American Community Survey 2020–2024) data counts about 374,000 homes in Fort Worth. Roughly one in three was built before 1980: about 34,000 in the 1950s, 24,000 in the 1960s and 31,000 in the 1970s. Another ~36,000 date from before 1950. And a lot of Fort Worth is brand new: about 43% of the city’s homes were built in 2000 or later.
The ground moves. USDA soil survey data shows about 42% of the mapped land inside Fort Worth is shrink-swell (expansive) clay, and almost half of the land rates high for clay swell. The biggest soil series in the city is Sanger clay, a very high-swell soil. Geology also changes across town, from shallow soils over limestone on parts of the west side to deeper clays elsewhere. The Eagle Ford shale that underlies parts of Tarrant County weathers into a highly plastic clay that geotechnical engineers know for causing foundation movement. Clay swells after rain and shrinks in drought, flexing the slab and stressing the pipes underneath. Read more about what causes slab leaks in DFW and Type L vs. Type M copper.
What’s under your Fort Worth home, by era
Fairmount and Arlington Heights
Fairmount was mostly built 1905–1920. Many homes in these neighborhoods sit on pier-and-beam foundations with a crawlspace, not a slab, so water-line leaks can often be reached from underneath. Cast iron drains and galvanized supply lines are often original or patched many times.
Ridglea Hills, Wedgwood, Tanglewood and the TCU area
Post-war ranch homes (Wedgwood was built out between roughly 1950 and 1975). Mostly slab-on-grade, typically with galvanized or copper supply and cast iron drains under the concrete, now 50–70 years old.
Southwest and east Fort Worth
Under-slab copper now 30–40+ years old, at the age when pinhole leaks become common.
Far north Fort Worth and Alliance
Newer homes along the I-35W and US-287 corridors and on the far west and southwest edges, often on post-tension slabs with steel cables in the concrete. The leak must be pinpointed before anyone cuts.
A leak also makes the soil problem worse. Water from a slab leak soaks the clay under one part of the house and makes it heave. A drain leak can wash soil out and leave voids. The longer a leak runs, the more the foundation can move.
How do I know if I have a slab leak?
If you notice two or more of these, it’s worth a test.
- A water bill that jumped while your usage stayed the same. Fort Worth Water suggests looking at your January or February bill. For a family of four, winter use above about 12,000 gallons a month points to a serious leak. See what causes a high water bill.
- A continuous-use alert. Fort Worth’s newer digital meters can notify customers when the meter shows water running nonstop, which may mean a private plumbing leak.
- A warm or hot spot on the floor, from a hot-water line leaking under the slab.
- The sound of running water with every fixture off.
- The water heater running constantly.
- Low water pressure throughout the house.
- Damp carpet, warped wood, musty smells, or tile cracking in a line.
- New cracks in walls, brick or the slab, or doors that start sticking.
- Sewer smell, slow drains all over the house, or repeat backups. In 1950s–70s homes, these can mean a cracked cast iron drain under the slab.
The meter test: turn off every faucet, appliance, ice maker and the irrigation system, then watch your meter’s leak (low-flow) indicator for 10–15 minutes. If it moves, water is escaping somewhere. For slow leaks, write down the full reading, use no water for an hour or two, and check again. This test only catches supply-side leaks; a leaking drain won’t show up on the meter. Our guide to the signs of a slab leak covers more ways to check.
How do you find a slab leak without tearing up my house?
We locate the leak before any concrete is touched, then make one small, accurate opening instead of guessing. Our leak detection layers these methods:
1. Pressure testing & electronic line tracing
Isolates which line is failing and maps where it runs through the slab.
2. Electronic acoustic detection
Picks up the sound of water escaping under pressure and narrows the spot down to within a few inches.
3. Infrared thermal imaging
Shows the heat pattern of a hot-water leak and how far the water has spread.
For drain-side leaks, we run a sewer camera through the line and a hydrostatic test to check whether the isolated drain system holds water. On a post-tension slab in a newer north Fort Worth home, precise location matters even more, because cutting in the wrong place can hit a tensioned cable.
How are slab leaks repaired?
The right repair depends on the pipe’s age and material, where the leak is, your flooring, and whether it’s the first leak or part of a pattern. You get a flat-rate written estimate before any work begins.
| Method | Best when… | Tradeoff |
|---|---|---|
| Spot repair (open & fix) | One leak in otherwise-healthy pipe | Lowest upfront cost and often done in a day, but concrete and flooring get cut, and old galvanized or copper that’s already leaked may fail again |
| Reroute the line | Aging lines or repeat leaks | New copper or PEX runs through the walls or attic and the failed line is abandoned; some drywall patching, usually 1–3 days |
| Tunneling | Tile, hardwood or finished floors you want to protect | Reaches the pipe from outside the foundation so floors stay intact; usually 2–4 days and needs careful backfill in our clay |
| Whole-home repipe | Pipe failing in several places | Highest upfront cost, but ends the cycle of repeat leaks and often costs less than several separate repairs over time |
Our honest take for Fort Worth: on a 1950s–60s ranch in Wedgwood or Ridglea with original galvanized or copper that’s leaked before, a reroute or repipe usually beats chasing leaks. On a 2005 home near Alliance with one pinhole, a precise spot repair may be all you need. We’ll tell you which one your house is. Plumbing financing is available for larger repairs.
Will insurance or Fort Worth Water help with the cost?
Coverage varies by policy, so read yours or ask your agent. In general, many homeowners policies cover the cost of accessing the leak (tear-out and restoration) and the resulting water damage, but most don’t cover repairing the pipe itself, because it’s treated as maintenance. Foundation damage and leaks that ran a long time are often limited or excluded. We document the failure and how we accessed it, and we work directly with your adjuster. Call us before you file so the paperwork is right.
Fort Worth Water’s leak repair bill adjustment
- Who qualifies: hidden leaks beyond your control, specifically including leaks under the foundation or inside a wall.
- Deadline: apply within 60 days of the completed repair, with the repair receipt or paid invoice (ours counts), your account number, the property address, the dates of the high bills, and a description of the repair.
- The credit: if you’re eligible, up to two consecutive billing periods can be credited 50% of the usage above your average.
- Limit: one adjustment per rolling 12-month period. Contact Fort Worth Water Customer Care at 817-392-4477 or MyWaterAccount@FortWorthTexas.gov.
The water line from the meter to your house is private plumbing. The city maintains its side up to the meter, and leaks on your side are repaired by a licensed plumber at the homeowner’s expense.
Think you have a slab leak? Start here.
What to do today, in order:
- Do the meter test. Shut off all water inside and out, then check whether the meter’s leak indicator keeps moving. Here’s how to detect a hidden water leak.
- Water pooling or flooring getting wet? Close your main shutoff valve. City code requires a private shutoff on the customer side of the meter. If you have a problem at the meter or the street, Fort Worth Water’s emergency line is 817-392-4477 (Option 1), 24/7.
- If you suspect a hot-water line, turn off the water heater so it doesn’t run nonstop.
- Take photos of wet spots, cracks and your water bill for insurance and the city’s leak adjustment.
- Don’t let anyone break concrete to “look.” The leak should be located with detection equipment first.
Fort Worth neighborhoods we serve
We handle slab leak detection and repair across Fort Worth, including ZIP codes 76101–76105, 76107–76112, 76114–76116, 76118–76120, 76123, 76126, 76132–76135, 76137 and 76140:
- Fairmount, Mistletoe Heights and the Near Southside: historic homes with cast iron and galvanized pipe.
- Arlington Heights and the Cultural District, along Camp Bowie Boulevard.
- Ridglea, Ridglea Hills and Ridglea North: post-war ranch homes west of Camp Bowie.
- Tanglewood and the TCU area: 1950s–70s ranch homes south of TCU.
- Wedgwood and southwest Fort Worth: 1950s–70s slab homes near I-20 and the Chisholm Trail Parkway.
- Riverside and the Eastside: established homes east of downtown.
- Far north Fort Worth and Alliance: newer post-tension-slab neighborhoods along I-35W and US-287.
Whether you’re near Sundance Square, the Stockyards, TCU, the Trinity River trails, or anywhere inside Loop 820, call and we’ll confirm your address is in our service area.
Fort Worth slab leak FAQ
Are slab leaks common in Fort Worth?
Yes. About 42% of the mapped land in Fort Worth is expansive clay that swells with rain and shrinks in drought, and roughly a third of the city’s homes were built before 1980. Moving soil plus aging pipe under the slab is the classic recipe for a slab leak.
How do you find a slab leak without tearing up my floor?
We use pressure testing, electronic line tracing, acoustic listening equipment and thermal imaging to pinpoint the leak before any concrete is cut, usually to within a few inches. That keeps the opening small, or lets us reroute around the slab entirely.
My home is in a newer north Fort Worth neighborhood. Can I still get a slab leak?
Yes. Newer homes can still have leaks at fittings or from soil movement. Many are built on post-tension slabs with steel cables in the concrete, so precise leak location matters even more before anyone cuts.
Does Fort Worth Water give a credit for a slab leak?
Possibly. Fort Worth Water’s leak repair adjustment covers hidden leaks such as under the foundation. Apply within 60 days of the repair with your paid invoice. Eligible accounts can get 50% of the usage above average credited for up to two billing periods, once per 12 months.
Will homeowners insurance cover my slab leak?
Policies vary. Many cover accessing the leak and the resulting water damage, but not repairing the pipe itself. We document the failure and work with your adjuster. Call us before you file.
Should I repair the leak or reroute the line?
For one leak in otherwise-healthy pipe, a spot repair can make sense. For aging galvanized or copper with repeat leaks, which is common in 1950s–70s Fort Worth homes, a reroute or repipe usually costs less in the long run. You get a flat-rate written estimate for each option before work starts.
Elsewhere in DFW, we also handle slab leaks in Carrollton, Richardson and Plano.
