Hydrostatic Plumbing Test in Wichita Falls, TX: Find Out Whether a Leak Is Feeding the Movement
Your under-slab drain lines get plugged and filled with water, and the level tells you whether one is leaking into the clay.
- Free on-site inspection
- Test result in writing
- Written itemized quote
Wichita Falls Foundation Works sequences the hydrostatic plumbing test into foundation work across Wichita Falls and Wichita County, so you never pay for piers while a drain line is still wetting the clay. Our on-site inspection and the elevation survey are free; the test itself is a plumber's line item, quoted in writing before anybody digs. Sometimes the test comes back clean, and we will tell you the movement has nothing to do with a leak. Call (940) 202-0406 and we'll start with the free visit.
What a hydrostatic plumbing test involves
The under-slab drain lines are plugged at the cleanout and filled with water, and the level is watched to see whether it holds. That tests the drain side, not the pressurised supply side, which is a separate static test. A plumber runs it, not our pier crew, and the plumbing repair itself is billed separately and quoted after.
On the day you see a plumber at an open cleanout by the foundation with a length of hose, a test ball and a water meter reading, and nothing dug. The house needs an accessible cleanout before a test can run at all. Where the readings point at water first, we settle that on our foundation inspection.
What you get in writing
Every job we take starts with a free on-site inspection and ends with a written itemized quote. You get the warranty terms in writing, with the transfer terms spelled out, and we quote your scheduling window up front. All of it holds the same way across Wichita Falls and Wichita County.
Signs of an under-slab leak Wichita Falls homeowners call about
- doors that stick or will not latch
- cracked sheetrock at the corners of door and window openings
- stair-step cracks in the mortar of the brick veneer
- nail pops and tape seams showing
- baseboards separating, a gap between the wall and the floor
- sloping or bouncing floors, the hallway feeling higher in the middle
- gaps opening above the door frames and separation at the cornice
- cracked tile and opened grout lines
- a chimney pulling away from the wall
Any one of these can be the first thing you notice. None of it says where the water is coming from; the test does.
What Wichita Falls homeowners get from Wichita Falls Foundation Works
Where the test sits in the sequence is a judgement call. After jacking is the more common answer, though not the only one, and either way it is a plumber's job and not our pier crew's. Where a test fails, the leak gets repaired before we set anything, because a line still leaking under the slab keeps wetting the clay however level the house is.
Who carries a plumbing repair if the lift breaks a line belongs in your contract in writing, not sorted out afterward. Texas does not license foundation repair contractors (the state licensing agency, TDLR, lists none); ask any company for proof of general liability insurance, a written warranty with the transfer terms spelled out, and whether an engineer's report is included or billed separately. The City of Wichita Falls licenses and registers contractors and requires a permit before repair or alteration work starts; ask to see both.
Hydrostatic test, static test and a camera run compared
A hydrostatic test watches the drain lines; a static test checks the pressurised supply side, and they are two different procedures answering two different questions. A main-line test covers the whole run at once; isolating each branch narrows a failed result down to the section that is actually leaking.
So adding a sewer camera lets the plumber see the line rather than infer it, which matters once a repair has to be located and dug to. A post-repair verification test afterwards is what proves the fix actually held, and we ask to see it. It is the same paperwork a pre-sale file wants and the same result an elevation survey gets checked against.
How the test runs, cleanout to written result
- The free on-site inspection and elevation survey come first, with your scheduling window quoted up front.
- We locate a cleanout; if the house has none, installing one is a line item before the test.
- The drain lines are plugged and filled with water at the cleanout.
- The level is watched and the meter is read; a drop is the finding.
- Isolation or zone testing narrows a failed result down to the leaking run, and a camera can confirm it.
- The plumbing repair is quoted separately, then a verification test follows after the repair.
Why North Texas clay, water and weather move foundations
In USDA soil survey data for Wichita County, Kamay's clay subsoil, the soil mapped most often under the developed city, carries a plasticity index of 29 and a linear extensibility of 7.5 percent, which NRCS classes as high shrink-swell. NRCS also records Kamay as well drained with slow permeability, Hollister as very slow with high to very high runoff, and Tillman slow as well.
NOAA's 1991-2020 rainfall normals peak at 3.81 inches in May and drop to 2.02 by July, a swing that moves the clay under these houses. The city's water ordinance makes it unlawful year round to leave a controllable leak unrepaired, though that clause addresses irrigation, a broken sprinkler head or a leaking valve, not an under-slab drain line, which is why we put a dedicated test in the sequence.
How much does a hydrostatic test cost in Wichita Falls?
A main-line test runs $250 to $600. Isolating and zoning it down to the leak costs $350 to $600, a camera bundle $400 to $700, and a post-repair verification test $100 to $350. Where the house has no accessible cleanout, installing one runs about $400 to $800 first.
In practice, house size, number of fixtures, and whether a static supply-line test is added on top all move your number. Call (940) 202-0406 and we'll say on the free inspection whether you need a test at all.
| Work | Typical range | Notes |
|---|---|---|
| Hydrostatic plumbing test, main line filled and monitored | $250 to $600 per test | Run by a plumber, not by our pier crew |
| Isolation or zone testing to narrow the leak down | $350 to $600 per test | Branch by branch rather than the whole main line |
| Test bundled with a sewer camera run | $400 to $700 per test | See the line rather than infer it |
| Cleanout installed where the house has none | $400 to $800 per cleanout | A test cannot start without one |
| Verification test after the plumbing repair | $100 to $350 per test | What proves the repair held |
Swipe the table sideways to see the notes column.
Test prices are a plumber's bill, quoted separately from our written quote. Our on-site inspection is free.
Under-slab leak testing across Wichita County
Testing runs the same way across Wichita County and the towns beyond it, serving Wichita Falls and Wichita County alike. Burkburnett, Holliday and Electra sit on the same clay, and we quote the scheduling window around the drive instead of folding it into your price.
What happens when you call
The inspection
A free on-site inspection comes first. We come to the property, look at the work in person, measure, and check the things that change the price before quoting anything.
A written, itemized quote
Every line item goes on paper before any work starts: prep, materials, labor, cleanup and the scheduling window. No verbal numbers.
Warranty terms in the contract
Workmanship and material warranty terms come in writing and go in your contract so you can read them before you sign.
Scheduling you can plan around
You get a start window and a working-day estimate up front, and the crew tells you before anything changes.
Who this is not for
Wichita Falls Foundation Works handles foundation repair and the related work listed on this site. It does not take on unrelated trades; if your job is outside that scope, a specialist in that trade is the right call.
Hydrostatic test questions from Wichita Falls homeowners
What is a hydrostatic test and what does it prove?
Your under-slab drain lines are plugged and filled with water, and the level is watched to see whether it holds. A drop says a sewer line under the slab is leaking into the clay. It does not test the pressurised supply side; that is a separate static test.
What does a hydrostatic test run?
$250 to $600 for a main-line test. Isolating and zoning it down to the leak runs $350 to $600, and a camera bundle $400 to $700. A verification test after the repair runs $100 to $350. None of those land on our invoice; they are the plumber's.
Does the test come before or after the piers?
Industry guidance puts the test after jacking, because the lift itself can break a line. Some companies also test before pricing piers where a leak is suspected. Either way it is a plumber's job, not our pier crew's.
If you fix the foundation, does that fix the leak?
No. The test finds a leak, and the plumbing repair is quoted separately after it. A line still leaking under the slab keeps wetting the clay no matter how level we get the house, so we would rather know first.
If the test finds a leak, does that change what insurance will look at?
It can, and this answer stays hedged on purpose. A sudden accidental discharge of water is the kind of event policies contemplate, while settling and soil movement generally are not. Read the policy, ask the carrier, and know that we do not file or adjust claims.
If the lift cracks a drain line, who carries that?
Your contract has to say who carries a plumbing repair if the lift breaks a line, and a verbal assurance is not enough. Read that line before you sign anything. The plumbing bill is a plumber's, and it is not part of our foundation quote.
Does the house need anything before the test can run?
An accessible cleanout, and that is the one thing to check before you book anything. If there is not one, installing it runs about $400 to $800 on top, which is worth knowing before a plumber arrives and finds nowhere to start.
A hydrostatic plumbing test answers one question honestly: is water still moving under your house. Without it, a pier job can lift a house that goes right on settling, and nobody will know why. Call (940) 202-0406 and we'll start with the free inspection, which is where that gets decided. No rush, and no charge to ask.
Get a written quote
Call (940) 202-0406 or send the form. The next step is a free on-site inspection and a written quote with every line item before any work starts.
Call (940) 202-0406