Amplifies the sound of water escaping a pipe so we can hear the leak through concrete or drywall. We use it to pinpoint slab leaks and hidden wall leaks.
Water leak detection St. Paul MN that finds the leak fast
If you're hearing water run when nothing's on, or your water bill jumped, you need water leak detection St. Paul MN. We use acoustic listening gear, thermal imaging, and sewer cameras to pinpoint hidden leaks behind walls, under slabs, and in crawl spaces.
Serving St. Paul and nearby areas.
How big is the leak job?
Hidden leak
Leak behind a wall or under a floor, found with thermal imaging.
- 1. Small leak Visible drip or pinhole leak in an accessible supply line.
- 2. Hidden leak Leak behind a wall or under a floor, found with thermal imaging.
- 3. Slab leak Leak under concrete, pinpointed with acoustic gear.
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- 19Services from one local team
- 16Areas served around St. Paul
- Listen firstWe use acoustic gear to hear the leak
- Confirm spotThermal imaging confirms the exact location
What our water leak detection service includes
Every leak detection visit includes a full inspection, electronic leak detection, and a written summary of findings.
Work order
Water Leak Detection and Repair- Full system inspection: We check your water meter, visible supply lines, shut-off valves, and fixtures. We look for signs of hidden leaks like warm spots, musty odors, and cracked slabs. This takes 15 to 20 minutes and gives us a baseline.
- Electronic leak detection: We pressurize the system and use acoustic listening equipment to hear the leak. Thermal imaging confirms the location behind walls or under floors. For slab leaks, we use a sewer camera or electronic amplification to narrow it to a 6-inch area.
- Written findings summary: You get a written summary of what we found, where the leak is, and what it will take to fix it. We include photos of the leak area and the repair plan. This is useful for insurance claims or if you want a second opinion.
- Same-day repair option: If you want us to fix the leak while we're there, we can. We carry copper pipe, PEX tubing, SharkBite fittings, and soldering torches on every truck. Most repairs take two to four hours. You get one bill for detection and repair.
What the first visit covers
First visit
We inspect, pressurize, and pinpoint the leak. You get a written summary and a repair plan.
Leak detection for St. Paul homes
We find and fix leaks in houses, condos, and duplexes.
Slab leaks
Under concrete floors in ramblers and split-levels.
Wall leaks
Behind drywall in kitchens and bathrooms.
Crawl space leaks
Supply lines in unheated crawl spaces.
Water heater leaks
Tank or supply line leaks near the heater.
Leak detection for St. Paul businesses
We work with property managers, restaurants, and retail spaces.
Multi-unit buildings
Leaks in shared walls and ceilings.
Restaurants
Leaks in supply lines and grease traps.
Retail spaces
Hidden leaks behind fixtures and walls.
Water leak detection St. Paul MN: what it actually involves
A hidden leak wastes water and damages your home. We find it with acoustic gear and thermal imaging, then fix it right. One call, one crew, one bill.
Water leak detection St. Paul MN is the process of finding water escaping from your plumbing system before it damages your home. We pressurize the lines, listen for the hiss of a pinhole leak, and scan floors and walls with thermal cameras to spot temperature differences. If the leak is under a slab, we use acoustic microphones and sometimes a sewer camera to confirm the exact spot. Once we know where it is, we repair it with copper pipe, PEX tubing, or SharkBite fittings and test the line before we leave.
St. Paul's older housing stock means galvanized steel and copper lines that have been in the ground for decades. Frost heaves in winter and shifting soil in spring put stress on buried pipes, and slab leaks are common in post-war ramblers. If you're searching for water leak repair near me St. Paul MN, we can usually get a tech out the same day. We also handle hidden water leak repair St. Paul MN for homeowners who only see a spike in the water bill and a warm spot on the floor.
- What it is
- Finding water leaks with acoustic and thermal tools.
- When it helps
- High water bill, warm spots, or running water sounds.
- What you get
- Written findings and a same-day repair option.
How our leak detection process works
We don't guess. Here's exactly what happens from the moment you call until the leak is fixed and tested.
Tools and methods we use for leak detection
Each method answers a different question. Together they leave very little to guess.
Detects temperature differences on floors and walls. A hot water leak shows up as a warm spot. We use it to confirm the leak location before we cut anything.
We run a camera through drain lines to check for cracks, root intrusion, and leaks. It helps us see inside pipes without digging.
Used to disassemble and cut damaged pipe sections. We make clean cuts so the new pipe fits properly.
Crimps PEX tubing fittings for a secure, code-compliant connection. We use it when replacing copper with PEX.
When to call for water leak detection
You get a water bill that's 30% higher than last month and you can't find the leak.
We come out and pressurize the system. Acoustic listening and thermal imaging usually find the leak within an hour.
HomesYour basement floor is warm in one spot, and you suspect a slab leak.
We use thermal imaging and acoustic gear to confirm the slab leak.
HomesYou hear water running at 2 a.m. and can't find the source.
Call us. We'll walk you through shutting off the main valve.
HomesYou're buying a home in St. Paul and want a leak inspection before closing.
We do a full leak detection inspection, including pressure testing and thermal imaging. You get a written report with photos.
Homes
How water leak detection runs in St. Paul
St. Paul's climate and housing stock create specific leak risks. Winter freeze-thaw cycles stress buried pipes and cause frost heaves that crack copper lines. Spring thaw sends water into basements, and sump pump failures are common.
Highland Park
Many homes here have copper lines from the 1950s. We see pinhole leaks and slab leaks in ramblers. Thermal imaging works well on these single-story layouts.
Como Park
Older homes with galvanized steel lines that corrode and leak. We often recommend repiping after finding multiple leaks in the same system.
Downtown St. Paul
Commercial buildings and condos with shared plumbing. Leaks can affect multiple units. We use acoustic listening to find leaks without disrupting neighbors.
- Highland Park
- Como Park
- Downtown St. Paul
- West Seventh
From problem to finished result.
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PhotoSlab leak in Highland Park rambler
Before: We used thermal imaging and acoustic listening to find a hot water slab leak under the concrete.
After: We rerouted the copper line overhead through the joist space, avoiding a slab break. The repair took six hours. The warm spot disappeared, and the next water bill dropped back to normal.
Burst pipe in Como Park crawl space
Before: A pipe burst at 2 a.m. in January. The homeowner shut off the main and called us. We found a split copper line in the crawl space and water pooling on the vapor barrier.
After: We replaced a 4-foot section of copper pipe with PEX and SharkBite fittings. We pressure-tested the line and dried the crawl space. The repair took three hours.
Hidden leak behind Downtown St. Paul wall
Before: A property manager noticed musty smells in a laundry room and a spike in the water bill. We used acoustic listening to find a pinhole leak in a copper supply line behind the wall.
After: We opened a 12-inch section of drywall, repaired the pipe, and replaced the insulation. The repair took four hours. The musty smell cleared up, and the water bill returned to normal.
Hidden water leak repair St. Paul MN: problems we solve
Hidden leaks don't fix themselves. Here are the most common problems we see in St. Paul and how we solve them.
Water bill spiked but no visible leak
You're paying for water that's soaking into your slab or yard. If ignored, it can undermine your foundation and cause mold.
Warm spot on the floor
A warm spot usually means a hot water line is leaking under the slab. It can crack the slab and warp flooring if not repaired.
Sound of running water when nothing is on
That hiss is a pinhole leak in a supply line. It can waste 10,000 gallons a month and lead to a burst pipe in winter.
Musty smell in the basement
A musty smell often means a slow leak behind a wall or under a floor. It can grow mold and rot framing before you see water.
Why St. Paul homeowners call us first
A hidden leak can rot framing, buckle floors, and spike your water bill by hundreds of dollars.
Stop water bill spikes
A pinhole leak in a copper line can waste 10,000 gallons a month.
Save your floors and framing
Water under a slab or behind a wall warps hardwood, grows mold, and rots sill plates.
Avoid emergency calls
A burst pipe at 2 a.m. We check supply lines, shut-off valves, and pipe insulation while we're there.
Licensed, code-correct repairs
Every repair meets Minnesota Plumbing Code and is done by a Minnesota Master Plumber or Journeyman Plumber.
Water leak detection cost St. Paul MN
Typical 2026 pricing for water leak detection in St. If we repair the leak during the same visit, the detection fee is often waived.
Included
Quoted after a first look
- Full system inspection
- Electronic leak detection
- Written findings summary
- Same-day repair option
What changes the scope
Quoted after a first look
- Leak location
- Access difficulty
- Repair vs. detection only
- Pipe material
What you receive
Clear records you can keep and share.
Findings summary
Written report of leak location and cause.
Photos
Images of the leak area and repair.
Repair plan
Step-by-step plan with flat-rate pricing.
Local leak detection expertise you can trust
We've worked on St. Paul's housing stock for years, from 1920s bungalows in Highland Park to post-war ramblers in Como Park.
Water meter
We watch the leak indicator to confirm a hidden leak.
Thermal images
Temperature differences reveal where water is escaping.
Pressure gauge
A pressure drop tells us the repair is holding.
Is your St. Paul neighborhood covered?
Type your ZIP code or town to check. If you are nearby and not listed, call and ask.
St. Paul ZIP codes
- 55114
- 55117
- 55116
- 55119
- 55130
- 55101
- 55155
- 55102
- 55103
- 55106
- 55107
- 55104
- 55105
- 55108
Towns we serve.
Based in St. Paul and covering the places around it. Pick one for local details.
What St. Paul homeowners say
Our water bill doubled and we couldn't find the leak. These guys came out same day and used a thermal camera to find a slab leak in our basement. They repaired the copper line and rerouted it overhead so we didn't have to break the floor. Took about six hours. Bill is back to normal.
Heard water running at 2 a.m. and called. They walked me through shutting off the main, then had a tech out by 7 a.m. Found a burst pipe in the crawl space. Fixed it with PEX and tested it. No more sound, no more water. Fair price.
We manage a 12-unit building and had a hidden leak in a wall. They used acoustic listening and found it behind the laundry room. Repaired the pipe and checked all the shut-off valves while they were there. Professional and clean. We use them for all our leak calls now.
Frequently Asked Questions
Short answers for the first few minutes. The team can cover the rest.
Still have a question?
Describe what you are seeing and we will point you to the right next step.
+16513720726Most water leak detection jobs in St. If we repair the leak during the same visit, the detection fee is often waived. We give you a flat-rate quote before we start, so you know the total.
Watch for a water bill that jumps 20% or more, a warm spot on the floor, the sound of running water when nothing's on, or a musty smell in the basement. In St. Paul's older homes, we also see paint peeling near baseboards and cracks in the slab. If you notice any of these, call us for a detection visit before the damage spreads.
Yes. We pinpoint slab leaks with acoustic equipment and thermal imaging, then repair the copper or PEX line. Sometimes we reroute the pipe overhead to avoid breaking the slab. Most slab leak repairs take four to eight hours. We follow Minnesota Plumbing Code and pressure-test the line before we leave.
We do. Paul and surrounding Ramsey County neighborhoods. We're based in St. Paul, so we know the housing stock and the common failure points. Call us at +16513720726 and we'll schedule a same-day or next-day visit.
Need water leak detection St. Paul MN today?
+16513720726Call now and we'll schedule a same-day or next-day visit. Upfront pricing, no surprises. Call +16513720726.
Contact our St. Paul plumbers
Call us at +1 651-372-0726 for service, estimates, or emergency repairs. You can also email [email protected] and we will get back to you within one business day.