A buried line, found before it's dug

Underground plumbing leaks are the most expensive kind to guess at and the cheapest kind to locate correctly. A line running from the equipment pad to the pool shell moves through Brazoria County's expansive clay every wet-dry cycle. PVC unions loosen a fraction at a time. A joint that held fine in 2019 can separate by 2026 without anyone touching it.

We don't excavate speculatively. Pressure testing tells us which line is losing water before a shovel goes into the ground, and that single step is usually what keeps a repair from turning into a full re-pipe.

How the repair actually works

1. Confirm the line

   Pressure testing (from the leak detection visit, or done fresh) isolates which specific line is dropping pressure: skimmer, main drain, return, or cleaner line.

2. Trace the path

   Before digging, we trace the line's route using the original plumbing layout where one exists, or a tracer method where it doesn't, so we open one hole instead of three.

3. Locate other utilities

   Pool lighting conduit, irrigation lines, and low-voltage wiring often share the same trench path from decades of past work. We locate those before opening ground.

4. Hand-dig or hydro-excavate

   We expose the pipe by hand or with a water-jet excavation method that breaks up clay without cutting through roots or other lines. It costs more labor than a trencher. It also doesn't create a second problem while fixing the first.

5. Cut, repair, and pressure retest

   The damaged section gets cut out and replaced with a slip-fix coupling matched to the existing pipe schedule. We pressure test the repaired line again before backfilling, on the spot, while we can still reopen it if needed.

6. Backfill and surface repair

   Backfill in compacted lifts, then patch decking, pavers, or turf disturbed by the dig. Plaster or coping repair at the shell entry point is quoted separately if the trench crosses under decking.

What makes this harder?

• Root intrusion. Mature trees on older lots in Lake Jackson Farms and Bailey's Prairie have decades to grow into a trench line, and roots sometimes have to be cut back carefully rather than torn out.
• Multiple loosened unions. Clay heave rarely stresses just one joint. Finding one leak sometimes reveals a second, weaker union nearby that hasn't failed yet but is close.
• Lines running under hardscape. Decking, pavers, or a covered patio over the pipe path means saw-cutting and matching the surface material afterward, which adds time and cost.
• Older pipe material. Pools built before the 1980s sometimes used cast iron or early poly pipe that crumbles instead of cutting cleanly, requiring a longer section replaced than the leak point alone.
• Shared trenches. Irrigation lines, low-voltage lighting wire, and the pool's own plumbing frequently share one old trench path, so one repair can require coordinating around three systems instead of one.
• No as-built diagram. A lot of equipment pads have been swapped or moved over the decades without anyone keeping a diagram, so the actual pipe route sometimes surprises even a longtime homeowner.

Questions we hear most