Protect Your Drinking Water with Certified Backflow Testing
Backflow prevention devices protect your home's drinking water supply from contamination by irrigation water, chemicals, and other pollutants that can be siphoned back into the water main under certain pressure conditions. Texas requires annual testing of backflow prevention assemblies on irrigation systems and commercial properties, and TXL Plumbing holds the proper certifications to perform that testing, make repairs, and install new assemblies anywhere in the Austin metro area.
Call us now for fast, honest service — or request a free quote online.
Call (512) 787-5713 Request a QuoteRecognizing these signs early can save you significant repair costs. When in doubt, call us — we'll give you an honest assessment.
Most Texas water utilities require annual testing of backflow assemblies. Failure to comply can result in service interruption.
Any irrigation system connected to the municipal water supply requires a properly rated and installed backflow preventer.
A leaking or failed backflow assembly is not protecting your water supply and must be repaired or replaced promptly.
Fertilizer injectors, pool chemical feeders, and similar devices require a higher level of backflow protection (reduced pressure zone or double check valve assembly).
If your assembly failed its annual test, it must be repaired and retested within the utility's required timeframe to avoid service disruption.
If you're buying a home, confirm the backflow assembly is present, properly installed, and has a current test on file.
We believe in transparency at every step. Here's exactly what to expect when you call Texas Legacy Plumbing.
Our licensed backflow testers use calibrated gauges to perform the required differential pressure tests on your assembly and submit test results directly to your water utility on your behalf.
If your assembly fails the annual test, we identify the faulty internal component (check valves, relief valve, or seats) and make code-compliant repairs on the spot where possible.
When an assembly is too old, physically damaged, or no longer available in parts, we install a new, properly sized and rated assembly in its place.
Installing a new irrigation system? We install the correct type of backflow preventer (PVB, RPZ, or double-check valve) based on your water utility's requirements and your system's risk level.
We file your test report directly with your water utility so you don't have to worry about paperwork or deadlines.
We maintain a testing calendar for all our customers and proactively reach out when your annual test is due — so you never miss a deadline.
Texas Legacy Plumbing serves Liberty Hill, Austin, and the entire Central Texas metro. Call now for same-day service or schedule online.
Everything you need to know before you call. Have a question we haven't answered? Call us directly.
If you have an irrigation system or any other cross-connection in Texas, yes. Annual testing is required by the Texas Commission on Environmental Quality (TCEQ) and most local water utilities. Non-compliance can result in water service being shut off.
The three most common residential types are: Pressure Vacuum Breaker (PVB) — the most common for irrigation; Reduced Pressure Zone (RPZ) assembly — for higher-risk applications; and Double Check Valve (DCV) — for lower-risk applications. We'll install the correct type for your specific system.
A standard annual backflow test takes 20–30 minutes. We handle the paperwork and submit results to your utility.
A small amount of discharge from a PVB's air inlet vent under pressure is normal. However, continuous heavy dripping at full system pressure indicates a failed check valve that needs repair.
Yes — we service both residential and commercial backflow assemblies throughout the Liberty Hill, Georgetown, Cedar Park, and Austin areas.
