Austin’s backflow dispatch — testing, repair, install.
Annual backflow test letter from City of Austin? Irrigation backflow leaking? Pool fill valve dripping? The dispatch line connects you with TCEQ-certified backflow testers + TSBPE-licensed Master Plumbers — same-day testing, repair, or full replacement.
No call center. No out-of-state routing — enter your ZIP and we’ll match you to a local Master Plumber.
Local NetworkMaster Plumbers in every ZIP
TSBPE LicensedEvery dispatched plumber
24/7 DispatchEmergency line always open
a written estimate after an on-site assessment
How the dispatch line works
Four steps, end to end. The call is free. The matched plumber’s estimate is provided after an on-site visit. You decide whether to proceed.
You call
The 24/7 dispatch line picks up. A real coordinator captures your ZIP, the symptom, and the urgency.
You get matched
Dispatch routes to the nearest TSBPE-licensed Master Plumber familiar with your ZIP and build era.
On-site diagnosis
The dispatched plumber walks the job, writes a line-item estimate, pulls any required permits.
You decide
a written estimate after an on-site assessment. No obligation. Work is performed to Texas plumbing code.
Why City of Austin requires backflow testing
Backflow prevention is the one piece of plumbing code most homeowners never knew existed — until they get a test notice.
💧 Cross-connections threaten drinking water
Whenever a non-potable system (irrigation, pool, boiler) connects to your drinking water supply, there’s a theoretical risk that pressure could reverse and pull contaminated water back into the city main. City of Austin requires backflow preventers on every cross-connection PLUS annual certified testing to verify they still work. Without testing, your home could push fertilizer-contaminated irrigation water back into the neighborhood’s drinking supply.
📅 Annual test required by City of Austin
Every backflow preventer in Austin (irrigation, pool, commercial cross-connection) must be tested annually by a TCEQ-certified tester. Test results are filed with City of Austin Water Utility. Miss the test deadline and you get a non-compliance notice; ignore that and water service can be shut off. The Master Plumbers the dispatch line connects you with hold the TCEQ Backflow Prevention Assembly Tester certification (separate from standard plumbing license).
❄️ Austin freezes destroy backflow assemblies
Brass backflow assemblies sitting outside crack when water inside freezes. Common after first-freeze-of-the-season events. Symptom: assembly is leaking water continuously OR not holding pressure on the test. Freeze-damaged assemblies are NOT field-repairable — they need replacement. Insulated covers prevent most freeze damage and should be installed every fall before first freeze.
🌱 Irrigation backflow is the most common Austin install
Almost every Austin home with a lawn irrigation system has a backflow preventer at the irrigation tap (usually a brass assembly near the side of the house or at the meter box). Pressure Vacuum Breaker (PVB) is the typical residential install. Annual testing varies by scope of work; repair when it fails; full replacement. PVBs last 10–15 years in Austin before needing replacement.
Look — backflow is the kind of thing most Austin homeowners discover via a letter from the City. The good news: testing is cheap and the certified testers the dispatch line connects you with handle the City filing as part of the service. The bad news: if the test FAILS, you’ve got 30 days to repair or replace before the City escalates. Don’t ignore the letter. The Master Plumbers can come out same-day, test, and tell you in 10 minutes whether you’re passing or facing repair.
How backflow prevention actually works
Three valves protecting your drinking water from your irrigation · why City requires the annual test.
What a backflow test visit looks like
The TCEQ-certified tester arrives with the test gauge kit. They isolate the assembly (close the upstream and downstream shutoffs), connect the gauge ports, and pressure-test each check valve and the relief valve. Total test time: 15–25 minutes. Pass: certificate filed with City of Austin within 48 hours. Fail: tester explains what failed and quotes repair options on the spot.
If the assembly fails the test, the dispatched Master Plumber can typically repair or replace same-day for common assemblies. PVB rebuild kit (most common residential):. Full PVB replacement: including brass body, install, and re-test. RPZ (reduced pressure zone) assemblies are more complex and varies by scope of work to replace. The new install gets tested and filed before the truck leaves.
Backflow symptoms — what’s wrong
What you’re seeing → likely cause → typical fix.
Symptom Got a City of Austin backflow test notice
Annual test due. TCEQ-certified tester comes out, tests in 15–25 min, files certificate with the City. total. Most assemblies pass; failures get repair quote on the spot. Don’t ignore the notice — escalates to water shutoff in 60–90 days.
Annual test ·
Symptom Brass assembly leaking water constantly
Either failed relief valve (RPZ assemblies) or freeze-cracked body. Relief valve repair = field-rebuildable. Cracked body = full replacement. Tester confirms in 5 minutes. Replacement needed within 30 days of failure.
Repair or replace ·
Symptom Sprinkler system PVB making whistling sound
PVB relief valve seating issue OR backpressure event. Sometimes resolves itself; sometimes indicates a failed check valve. Test confirms. If it’s a one-time event, often a partial fix; if recurring, full PVB replace.
Test · Professional repair if fix ·
Symptom After freeze: pool/irrigation backflow not running
Freeze crack. The brass body has split internally. Not field-repairable on residential PVBs — full replacement. Insulated cover for the job prevents recurrence next winter. Replacement done same-day if PVB type stocked locally.
Replacement ·
Symptom Test FAILED · 30-day deadline from City
Repair quote on the spot from the dispatched plumber. Common fixes: rebuild kit for the assembly or full replacement. Both restore compliance. New install includes re-test and filing with City. Don’t miss the 30-day deadline.
Repair or replace ·
Symptom Need new backflow install (new pool, new irrigation)
PVB or RPZ install per City of Austin code. Includes permit pull, install, certified test, City filing. PVB residential:. RPZ commercial:. Same-day install on most residential setups.
New install ·
Backflow test letter from City? Same-day testing.
TCEQ-certified testers · City filing handled · Repair or replace same-visit · Calls free
Backflow DIY (limited — testing requires certification)
Annual test must be TCEQ-certified. But there are 4 things you can do to keep your assembly healthy.
✓ Install an insulated cover before winter
Brass assemblies sitting outside split when water inside freezes. Insulated covers wrap the assembly during winter months. Install before first freeze. Remove in spring (or leave on — won’t hurt anything). Saves in freeze damage.
STOP if: the assembly already shows freeze damage (visible crack, constant drip). Cover won’t help — replacement needed.
✓ Cap an unused hose bib
Outdoor hose bibs without backflow protection (anti-siphon vacuum breaker) are a cross-connection risk. Many older Austin homes have these. Cap unused bibs with the hose-bib cap (any hardware store). Done. For bibs you use regularly, install the anti-siphon vacuum breaker that screws onto the threaded outlet.
STOP if: the bib threads are stripped or the bib itself is leaking. Repair the bib first.
✓ Visual inspection before annual test
Walk around your house and look at every backflow assembly. Check for: water dripping (failed seal), visible cracks, missing or damaged insulation cover, valve handles in wrong position. Make notes for the tester. Saves diagnostic time and may catch issues before the formal test.
STOP if: you don’t know where your assemblies are. The tester locates them as part of the service call. Be ready to point out irrigation valve manifolds, pool equipment areas, and any visible brass valves.
✓ Know when your annual test is due
Save a copy of last year’s test certificate. City of Austin sends notices, but they sometimes go to the wrong address (especially rental properties). Test deadlines are usually based on install anniversary — January installs need January tests, etc. Schedule proactively rather than reactively to avoid non-compliance fees.
STOP if: you’ve already missed the deadline and gotten an escalation notice. Schedule the test ASAP — most testers can get to you within 48 hours.
Austin backflow prevention — typical pricing
Market data from Austin dispatch backflow log + City of Austin testing requirements.
Source: HomeAdvisor / Angi Austin metro median pricing, 2025
Calls are free. The Master Plumbers dispatched through this line provide a written estimate after an on-site assessment.
Neighborhoods & cities the dispatch line covers
Austin backflow prevention — real questions, real answers
What homeowners ask about backflow testing + repair.
Backflow test letter? Get it tested today.
TCEQ-certified · City filing handled · Same-day repair · Calls free.