Tracer Gas Leak Detection in Pflugerville, TX
Some leaks are too small or too deep to hear. Tracer gas testing fills a drained water line with a harmless gas and follows where it comes up through the slab or soil. Call (512) 877-2924.
Call (512) 877-2924- Free call, no obligation
- Phone answered 24/7
- Local provider explains cost before work
What happens when you call?
- 1Tell us what you see: a warm floor, a high bill, or running water.
- 2We connect you with a local provider who serves your area.
- 3The provider explains options and cost before any work starts.
When should you call about tracer gas leak detection?
- The meter moves slowly but no one can hear the leak
- Acoustic testing did not find the spot
- The line runs under thick flooring, deep soil or a long yard
- You have PEX or plastic pipe, which carries sound poorly
- There may be more than one small leak on the same line
Tracer gas is one of several methods. See all Pflugerville slab leak services to compare.
Not sure it is a slab leak? Call and describe what you are seeing. The call is free.
Call (512) 877-2924What should you do right now?
- Do a meter test. Turn off every tap, the ice maker and irrigation. If the meter still moves, the leak is on the supply side.
- Write down the numbers. Note the meter reading, wait an hour without using water, then read it again. This helps the provider size the leak.
- Shut off the main valve if you see water or the bill is climbing fast.
What will the local provider do?
- Isolate and drain the line to be tested
- Fill it with a safe tracer gas, usually hydrogen mixed with nitrogen
- Wait for the gas to escape through the leak and rise
- Sweep the floor and yard with a gas sniffer
- Mark the point with the strongest reading
- Confirm with a pressure test before and after the repair
How does tracer gas work?
Hydrogen is the smallest gas molecule, so it passes through concrete, tile grout and soil where water cannot be seen or heard. The mix used is about 5% hydrogen and 95% nitrogen. It is not flammable at that level and is safe to use indoors. A sensitive sniffer picks up tiny amounts as they reach the surface.
Tracer gas compared with other methods
| Method | Best for | Limits |
|---|---|---|
| Acoustic (listening) | Metal pipe, active leaks you can hear | Quiet leaks, plastic pipe, deep lines |
| Thermal imaging | Hot water lines under the floor | Cold water lines, thick flooring |
| Tracer gas | Small or quiet leaks, PEX, long runs | Line must be drained; takes longer |
Many providers start with acoustic testing and use tracer gas when that does not find a clear spot. See electronic leak detection and thermal imaging.
Is it used for gas line leaks?
No. On this site, tracer gas testing means finding leaks in water lines. If you smell natural gas, leave the home and call your gas utility or 911 from outside. Gas line work needs a licensed plumber with a gas endorsement.
How long does it take?
Often a few hours. The line has to be drained and filled, and the gas needs time to rise through the slab or soil. Clay soil around Pflugerville can slow that down when it is wet, so the provider may wait longer or come back to check.
Questions to ask the provider
- Will you try acoustic testing first?
- What gas mix do you use?
- Will you pressure test the line after the repair?
- Do I get a written report with the marked spot?
Check the plumber's license before work starts
In Texas, plumbing repairs must be done by a licensed plumber. Ask for the license number and look it up on the Texas State Board of Plumbing Examiners website.
Related services
Frequently asked questions
Is tracer gas safe for my family and pets?
Yes. The usual mix is 5% hydrogen and 95% nitrogen. It is not flammable at that level and is not toxic.
Does tracer gas damage pipes?
No. It is used at low pressure and leaves the line once the test is over.
Why not just listen for the leak?
Small leaks and plastic pipes can be too quiet. Tracer gas finds leaks that make no sound.
Can tracer gas find more than one leak?
Yes. The sniffer picks up each place where gas comes up.
Is this for natural gas leaks?
No. It is for water lines. If you smell gas, leave and call the gas utility or 911.
Which areas do you take tracer gas leak detection calls from?
All of Pflugerville, TX, across ZIP codes 78660 and 78664.
Does it cost anything to call?
No. Pflugerville Slab Leak Specialists is a free referral service. The provider explains their costs before work starts.
Need help now?
Shut off the main valve if water is showing, then call. The phone is answered 24/7.
Call (512) 877-2924