The Most Trusted Plumbing Repair in Katy, TX
Nearly every home in Katy sits on a post-tension slab, and that one fact decides how a leak under the floor can be repaired at all. Copper run under slabs 30 to 50 years ago is now well inside its corrosion window. Lubbock TX Handyman proves where the water is going before anyone mentions breaking concrete.
Katy plumbing is a slab conversation before it is a pipe conversation.
Plumbing repair in Katy is shaped by what the house is built on, and
almost every house here is built on the same thing. Katy sits on heavy
Gulf Coast gumbo clay that swells in the wet season and shrinks in
drought, so builders across Waller, Harris, and Fort Bend counties use
post-tension slabs — concrete with steel tendons run through it
and tensioned after the pour to hold the slab together as the ground
moves underneath. That system works. The complication is that the water
supply lines are cast under or into that same slab, and they do not
have tendons holding them together.
The result is a failure mode Katy homeowners hear about constantly and
rarely have explained properly. Soil movement works on a buried supply
line year after year. Copper installed at original construction in the
older parts of Katy is also corroding chemically where it contacts
concrete, quite apart from anything in the water. Eventually a pinhole
opens, and because it is under the floor there is nothing to see. What
you get instead is a water bill that climbed for no reason, a warm
patch on the tile where a hot line runs, the faint sound of water with
every tap closed, or a section of flooring that lifts and smells musty.
Here is where Katy differs from most of Texas, and it is the part worth knowing before you accept a quote. You cannot casually cut a post-tension slab. Those tendons are under enormous load, and cutting one is both a structural problem and a real safety hazard, so any penetration requires the tendon layout to be located first. That is why the standard answer here is frequently an overhead re-route — abandon the leaking line under the slab, run new pipe up the wall, across the attic, and back down to the fixtures. The old line stops being pressurized, so it can never leak again, and the concrete is never touched. First, though, somebody has to prove the leak is actually under the slab, and a surprising share of them are not. We isolate the house at the meter and pressure-test before that conversation starts, because a running toilet flapper and a failed irrigation valve produce the same water bill and cost a great deal less to fix. Lubbock TX Handyman handles the diagnosis and the ordinary repairs directly, and coordinates a licensed partner when a re-route or any permitted work is genuinely what the house needs.
It is worth knowing how much the slab actually costs you. In East Texas, pier-and-beam plumbing repair in Henderson means the same failed line is visible from a crawlspace and replaceable a run at a time, for a fraction of what the equivalent slab job runs here.
What's included
Areas we serve around Katy
Plumbing repair pricing for Katy homeowners.
| Job | Typical Range |
|---|---|
| Service call & leak diagnosis | $95 – $250 |
| Under-slab leak location & pressure test | $250 – $600 |
| Faucet or fixture replacement | $150 – $350 |
| Toilet repair or installation | $175 – $450 |
| Water heater replacement | $1,100 – $2,200 |
| Overhead re-route (licensed partner) | $2,500 – $6,500 |
Ranges reflect typical Katy-area jobs. Re-route pricing varies more than anything else on this list because it depends on how many fixtures move and how accessible the attic is, and it is quoted by the licensed partner performing it. Every job gets a written estimate before work begins.
From first call to final check, in Katy.
Call & describe
Tell us what you are seeing — a water bill that jumped with no change in habits, a warm patch on the tile, the sound of water running with every fixture off, or flooring that has started to lift.
We confirm it is under the slab
Second, we isolate the house at the meter and pressure-test the supply before anyone talks about concrete. Plenty of suspected slab leaks turn out to be a toilet flapper, an irrigation valve, or a hose bib, and those are a far cheaper morning.
The repair
Third, we fix what is fixable directly. Fixtures, valves, water heaters, and accessible runs are ordinary repairs, and if the leak is genuinely under a post-tension slab we bring in a licensed partner and stay involved through the scope and the quote.
Final check
Finally, the system is re-pressurized and re-tested at the meter with everything closed, so you can see the dial has actually stopped moving rather than take our word for it.
Why Katy residents choose Lubbock TX Handyman for plumbing.
"Slab leak" is the most profitable phrase in Houston-area plumbing, and it gets used well before anyone has proven one exists. We test at the meter first, with the house isolated, because a running flapper and a stuck irrigation valve produce exactly the same symptom for a fraction of the cost. When the leak really is under the concrete we explain why a post-tension slab limits the options, walk you through re-route versus tunneling honestly, and hand the permitted work to a licensed partner while staying involved through the scope and quote. Fixtures, valves, water heaters, and anode rods we handle ourselves. Lubbock TX Handyman serves Katy, Fulshear, Brookshire, and Richmond. Every job starts with a written estimate.
Frequently Asked Questions
How do I know if I have a slab leak in my Katy home?
Four signs matter most. A water bill that rises with no change in use, a warm spot on the floor from a hot-water line, the sound of running water when every fixture is off, and flooring that lifts or smells musty in one area. Any one of them justifies a meter test. Shut every fixture, watch the meter dial for fifteen minutes, and if it still creeps you are losing water somewhere in the system.
Why does a post-tension slab change how the repair is done?
Because you cannot simply cut into one. Nearly every Katy home sits on a post-tension slab, which contains steel tendons under enormous tension running through the concrete. Cutting a tendon is both a structural problem and a genuine safety hazard, so any slab penetration requires the tendon layout to be located first. That is why overhead re-routes and exterior tunneling are so common here, and why a Katy quote reads differently than one from a market built on conventional slabs.
What is an overhead re-route and why is it recommended so often in Katy?
An overhead re-route abandons the leaking under-slab supply line and runs a new line up through the wall, across the attic, and back down to the fixtures. It avoids breaking the slab entirely, and the abandoned line can never leak again because it is no longer pressurized. On Katy gumbo clay, where soil movement keeps stressing whatever is cast under the concrete, a re-route often makes more sense than repairing one spot and waiting for the next.
My house is from the Cinco Ranch and Kelliwood era. Is that a factor?
It is the main factor. Copper supply lines installed under slabs in that build window are now decades into a corrosion window, and copper in direct contact with concrete corrodes chemically as well as from water quality. Katy homes from that period are the ones we most often find with pinhole leaks under the slab. Newer builds out toward Cross Creek Ranch and Firethorne generally used different materials and different routing.
Has the switch to surface water changed anything for Katy plumbing?
Yes, and it is worth understanding. The West Harris County Regional Water Authority was created in 2001 to meet the Harris-Galveston Subsidence District mandate to convert from groundwater to treated surface water, phased at 30 percent by 2010 and 60 percent by 2025. Changing the source changes the water chemistry, which changes how scale forms in a water heater and how quickly the anode rod is consumed. If your heater is over eight years old, that rod is worth checking.
Our house flooded during Harvey and was rebuilt. Anything we should look at?
Look at what was not replaced. The Barker Reservoir releases put water through a lot of Katy-area homes, and rebuilds concentrated on drywall, flooring, and cabinets because that is what insurance covered and what people could see. Water heaters that sat in standing water, corroded shut-off valves, and drain lines that were never scoped often stayed in place. Those are cheap to inspect now and expensive to discover later.
Get a free estimate — serving Katy and the west Houston suburbs.
Leak diagnosis, fixtures, water heaters, valves, and licensed-partner coordination for Katy, Fulshear, Brookshire, and Richmond.