License RMP #46592 · Slab Leak Specialists

Water Leak Detection & Repair in San Antonio, TX

San Antonio's expansive clay soil causes pipes to shift and crack over time. We use acoustic listening devices and infrared cameras to pinpoint leaks beneath your foundation before recommending any concrete work.

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Veteran Owned
& Operated
Free Estimates
Written & Itemized
Texas Trade Credentials
TECL · RMP · TACLA

Trade work is performed under the applicable Texas credentials: Texas Electrical Contractor TECL #31793, Responsible Master Plumber RMP #46592, and Texas Air Conditioning and Refrigeration Contractor TACLA00026479R (commercial refrigeration endorsement).

Est. 2016
San Antonio
Texas Electrical ContractorTECL #31793
Responsible Master PlumberRMP #46592
Texas Air Conditioning & Refrigeration Contractor (commercial refrigeration endorsement)TACLA00026479R

Request Leak Detection Service

Tell us what you are seeing - a running meter, a wet spot, a rising bill - and your ZIP code. A licensed CSW plumber will follow up.

Request A Free Estimate

Call 24/7 at (210) 880-2864 or book your estimate to discuss your project.

Leak Detection Services

San Antonio's expansive clay soil causes pipes to shift and crack over time. We use acoustic listening devices and infrared cameras to pinpoint leaks beneath your foundation before recommending any concrete work.

  • Electronic Leak Detection — $150–$400
  • Slab Leak Detection — $150–$600
  • Sewer Hydrostatic Test — $250–$500
  • Camera Sewer Inspection — $200–$400
  • Non-Invasive Acoustic Detection
  • Underground Pipe Detection
  • Pressure Testing
  • Trenchless Repair Options
  • Insurance Documentation

Leak Detection Cost in San Antonio

ServiceTypical Range
Electronic Leak Detection$150 – $400
Slab Leak Detection$150 – $600
Sewer Hydrostatic Test$250 – $500
Combined Water + Sewer Hydrostatic Test$400 – $600
Camera Sewer Inspection$200 – $400

Hydrostatic testing fills the sewer system with water and monitors for pressure drops — the definitive method for detecting under-slab sewer leaks in San Antonio's clay soil conditions. If a leak is found, we provide a repair estimate on the same visit. Free estimate on all repair options.

Our Leak Detection Process

1

Initial Assessment

We review your symptoms — high water bills, wet spots, low pressure — and identify the most likely leak location.

2

Electronic Detection

We use acoustic listening devices and electronic amplification to pinpoint the leak without opening walls or cutting concrete.

3

Camera Inspection

For sewer and drain issues, we run a camera through the line to visually confirm the problem and its exact location.

4

Detailed Repair Quote

We provide a clear, itemized repair estimate before any work begins — no surprises.

5

Repair

We perform the repair using the least invasive method possible — rerouting, spot repair, or trenchless technology where applicable.

6

Pressure Test & Verification

We pressure test the repaired line and verify the leak is fully resolved before leaving the job site.

When Leaks Cause Bigger Problems

Undetected leaks can lead to serious water damage that requires structural repairs. If a leak has already caused damage, C.S.W. Power Solutions can handle the full restoration as a general contractor — including insurance claim coordination. Leaks near your water heater may indicate the unit needs replacement. If hard water is accelerating pipe corrosion, a water softener can help prevent future leaks.

One General Contractor for Your Multi-Trade Project

C.S.W. Power Solutions is more than a plumbing contractor. As a general contractor, we also provide electrical services in-house; for HVAC-related needs, scope and availability are confirmed before work. Projects that require multiple trades — like bathroom remodels or water damage restoration — stay under one written scope, with one point of contact for planning, scheduling and questions.

Leak Detection FAQs

How do I know if I have a slab leak?

Common signs of a slab leak include unexplained increases in your water bill, the sound of running water when all fixtures are off, warm spots on your floor, cracks in your foundation or walls, mildew or moisture under carpets, and low water pressure. C.S.W. Power Solutions uses electronic leak detection equipment to pinpoint slab leaks without unnecessary demolition.

Can you detect leaks without breaking concrete?

Yes. We use electronic acoustic leak detection equipment that can locate slab leaks without cutting concrete in most cases. Once we pinpoint the location, we discuss the least invasive repair method — which may include rerouting the pipe through the attic or walls rather than cutting through the slab.

Will my homeowner's insurance cover a slab leak?

Coverage depends on your policy and on your insurer's decision, and CSW does not interpret coverage or handle claims. We can give you a written description of the leak location, the repair method and the repair scope, which you can share with your insurer.

How long does leak detection take?

A standard leak detection service call takes 1 to 3 hours depending on the type and location of the leak. Slab leaks typically take longer to locate than supply line or fixture leaks. We provide a written summary of findings and repair recommendations.

Related Plumbing Services

Plumbing Services

Full-service licensed plumber

Water Heater

Repair and replacement

Water Softener

Hard water solutions

Clogged Drains

Drain cleaning and repair

Texas Electrical Contractor TECL #31793Responsible Master Plumber RMP #46592Texas Air Conditioning and Refrigeration Contractor TACLA00026479R (commercial refrigeration endorsement)

Suspect a Leak?

Contact C.S.W. Power Solutions for professional leak detection services.

Free Written Estimates · Veteran-Owned

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Online estimate appointments need at least 24 hours' notice. Need help sooner? Call 24/7: (210) 880-2864.

Veteran-, Family- & Minority-OwnedTexas Electrical Contractor TECL #31793Responsible Master Plumber RMP #46592

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Prefer to pick a time? Book online.

Books a free on-site estimate consultation at an open time on our Calendly schedule. It is not a repair dispatch — for anything urgent, call us.

Online estimate appointments need at least 24 hours' notice. Need help sooner? Call 24/7: (210) 880-2864.

Book a Visit on Calendly (opens a scheduling window) Call 210-880-2864