Austin’s leak detection dispatch line — find it without tearing walls.
Water bill spiked? Wet spot in the yard? Sound of running water but every fixture is off? The dispatch line connects you with TSBPE-licensed Austin Master Plumbers using acoustic, thermal, and tracer-gas to find leaks without opening a single wall.
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
Upfront PricingWritten estimate before work begins
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
The plumber walks you through a written estimate after the on-site assessment. No obligation. Work is performed to Texas plumbing code.
Why Austin leaks hide so well
Hidden leaks in Austin are usually in one of four places — and a local Master Plumber knows where to look first based on your build era and ZIP.
❄️ Uri 2021 attic burst weeping
February 2021 stressed thousands of attic supply pipes that never fully burst but took micro-fractures. Five years later, those fractures are weeping a few drops an hour into attic insulation. Symptom: water bill creep of /month with no obvious cause. Most common in 1995–2015 builds with uninsulated attic runs. Thermal scan finds it in 15 minutes — repair varies by scope of work depending on access.
🌎 Houston Black clay slab leaks
South/East of MoPac on Houston Black clay, seasonal soil shift cracks slab supply lines at the couplings. Symptom: warm/hot spot in the floor (hot-side leak) or sudden drop in water pressure (any-line leak). Acoustic + thermal confirms the location. Highest-risk ZIPs: 78745, 78748, 78749, 78617, 78653. Detection varies by scope of work; repair.
🏚 Galvanized pinhole in pre-1985 homes
Central Austin pre-1985 builds (78703, 78704, 78705, 78751, 78756) with original galvanized supply lines are 40+ years old. Inside the pipe, scale + corrosion creates a pinhole that weeps a few drops daily. Bill creeps up; nothing visibly wrong. Once one pinhole shows, more are usually within 12 months. Detection finds the active one; the conversation shifts to repipe.
💧 Irrigation backflow + valve leaks
Outdoor irrigation systems are the #1 hidden water bill villain in Austin. A stuck zone valve waters one section 18 hours a day; a cracked backflow preventer drips constantly. Symptom: bill up during a month you didn’t increase indoor usage. The dispatched plumber tests every zone and the backflow assembly. Most fixes are.
Look — the biggest scam in leak detection is the ‘we need to dig up your yard to find it’ quote. Modern leak detection (acoustic + thermal + tracer gas) finds the leak point within a 6-inch radius BEFORE anything gets opened. If a plumber wants to start excavating without first running diagnostic — that’s not detection, that’s destruction. The Austin Master Plumbers the dispatch line connects you with use the cameras and equipment first.
How a hidden leak gets found
Three diagnostic methods · which matches your symptom · typical Austin market range for each.
What a leak detection visit actually looks like
The dispatched plumber starts with a meter test (5 minutes, free): shut off every fixture in the house, watch the water meter. If it’s moving, you have an active leak. If not, it’s intermittent — irrigation or a valve. From there, the plumber narrows the line: hot vs cold, indoor vs outdoor, slab vs above-slab.
Then the equipment comes out. Acoustic geophone for pressurized leaks. FLIR thermal cam for slab and wall leaks. Tracer gas (helium/hydrogen) for stubborn pinholes. The leak point is identified within a 6-inch radius before any wall or slab gets opened. You get a written diagnosis with the exact location, the suspected cause, and the repair options. Then YOU decide the repair, with full info.
Leak symptoms — what’s actually happening
Match what you’re seeing to the likely leak type and the right diagnostic method.
Symptom Water bill spiked with no usage change
Three top causes: (1) toilet flapper running silently (especially at 3am — most common); (2) slab leak from a clay-shift joint crack; (3) hidden Uri-2021 attic fracture that’s been weeping since. Meter test confirms active leak. From there, the diagnostic equipment narrows to one of the three.
DIY meter test · Detection if active ·
Symptom Wet spot on the yard or driveway
Outdoor leak: irrigation line, main line, or sewer line. Color/smell tells you which. Clear water = irrigation or main. Discolored or smelly = sewer. Dispatched plumber maps the wet area and tests systems separately. Outdoor main line leaks are sometimes the city’s responsibility if the leak is on their side of the meter — check before paying to dig.
Outdoor leak survey · varies by line ·
Symptom Hot spot or warm patch in the floor
Classic slab leak on the hot-water side. Heat from the leaking hot line under the slab transfers to the concrete and up through the flooring. Acoustic + thermal confirms within 15 minutes. Don’t keep using hot water — every gallon adds damage.
Detection · Repair ·
Symptom Hissing or running-water sound, nothing’s on
Pressurized leak somewhere. Acoustic geophone is the right tool — it’ll trace the sound to within inches. Common sources: a leaking valve under the slab, a Uri-stressed attic supply, or a wall leak inside a stud bay. Diagnose first, demo second.
Acoustic · varies by repair ·
Symptom Mildew or musty smell in one specific room
Hidden moisture somewhere in that room — wall cavity, under flooring, behind cabinet. Could be active plumbing leak, could be Uri-era attic drip migrating down. Thermal cam shows the wet zone through drywall. Identifying SOURCE is the leak detection job; remediating mold is a separate (water-restoration) trade.
Thermal · source-vs-remediation split ·
Symptom Pressure dropped at all fixtures suddenly
Main supply line leak or PRV (pressure regulator) failure. Test: shut off the supply at the meter, mark the water level in a glass at a faucet, wait an hour. If level drops, you’ve got a leak between meter and house. Detection equipment narrows from there.
Detection · PRV ·
Water bill creeping up? Don’t guess. Detect.
Acoustic + thermal + tracer gas · Find first, fix second · TSBPE Master Plumbers
Leak detection DIY (before you call)
These checks take 30 minutes and tell you whether you have an active leak — and how big. Prefer a guided walkthrough? Try our hidden water leak detector for a step-by-step symptom check.
✓ The meter test
Turn off every fixture in the house — toilets, sinks, washing machine, dishwasher, ice maker. Don’t flush. Go to the water meter (street meter box). Note the position of the small triangle dial or low-flow indicator. Wait 15 minutes without anyone touching water. Check again. If it moved at all, you have an active leak. Big movement = significant leak. No movement = leak is intermittent (irrigation, valve cycling).
STOP if: the meter is buried, frozen, or you can’t access it. Dispatched plumber brings a meter test rig and can read at any pressurized connection.
✓ Toilet flapper test
Most common ‘phantom’ water bill cause. Put 6 drops of dark food coloring in each toilet tank. Wait 20 minutes WITHOUT flushing. Check each bowl. If color appeared in any bowl, that toilet’s flapper is leaking — wasting 2–4 gallons a day per leaking toilet. Flapper is the part, 10-minute DIY fix.
STOP if: the flapper looks fine but bowl water still discolors. Could be the flush valve seat or the fill valve — easier to swap the whole flush assembly than diagnose individually.
✓ Isolating outdoor irrigation
Irrigation systems are the #1 hidden Austin water bill villain. Find the irrigation main shutoff (usually near the backflow preventer at the side of the house). Close it. Repeat the meter test. If meter stops moving = irrigation leak. If meter still moves = indoor leak. Half the calls dispatched for ‘plumbing leak’ turn out to be irrigation valve or backflow issues.
STOP if: the irrigation shutoff is seized or leaking itself. Don’t force it — check availability, they’ll bring tools.
✓ Listening for the leak
In a quiet house (late evening), walk every room and put an ear against the walls in any low-flow location: bathrooms, kitchen sink wall, water heater wall, laundry. A pressurized leak makes a faint hissing or whooshing sound. Won’t find slow drips or drain leaks, but a noticeable pressure leak you can sometimes hear without equipment. Narrows the search before the plumber arrives.
STOP if: the house has too much background noise (HVAC, traffic). Skip this and let the dispatched plumber bring the acoustic geophone.
Austin leak detection — typical pricing
Market data, not promises. The dispatched plumber writes the line-item diagnosis.
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 leak detection — real questions, real answers
What homeowners actually ask before authorizing detection work.
Ready to find that hidden leak?
Acoustic + thermal + tracer gas · Find first, fix second · Calls free.