Scarborough & GTA Pool Specialists
Pool Leak Detection
Done Right the First Time
Is your pool losing water faster than normal? Don’t guess — let our certified technicians use professional-grade technology to pinpoint exactly where the problem is.
40+
Years Experience
100%
Certified technicians
GTA
wide service area
Recognizing the problem
How do I know if my pool is leaking?
Noticeable Water Loss
Your pool is dropping more than ¼” per day, beyond what normal evaporation accounts for, especially in cooler Canadian weather.
Equipment Running Constantly
Your pump is cycling more than usual, or your auto-fill valve is running non-stop trying to compensate for lost water.
Rising Chemical Costs
You’re adding more chemicals than normal or struggling to maintain balanced water — fresh water dilution from a slow leak disrupts pool chemistry.
Soggy or soft Ground
Persistently wet areas around your pool deck or yard, especially near return lines or the skimmer, may signal an underground plumbing leak.
Visible Liner damage
Wrinkles, separations around fittings, or bubbling near the walls and floor of your vinyl liner are common places where small leaks begin.
Cracks in Decking
Shifting or subsiding deck sections near plumbing lines, or unexplained cracks in concrete or interlock, may be caused by water eroding soil underneath.
Before you call
A simple At-Home
Water Loss Test
Before booking a service call, you can run a quick test at home that helps us determine where to start looking — and gives us valuable information to assess your situation more accurately when you call in.
Sharing your results with us when you book helps speed up the diagnostic process and ensures we arrive with the right equipment for your situation.
The Bucket Test
This easy process separates evaporation from a genuine leak in your shell or plumbing.
1. With the pump running: Mark the water level clearly at the pool’s edge and let it run for 24 hours. Record exactly how much water was lost.
2. With the pump off: Reset the water level, then repeat the same 24-hour test with the pump completely shut off. Record the new result.
3. Call us with both numbers. The difference between the two readings tells us a lot about the leak and what it will take to fix it.
Professional equipment
Advanced Pool Leak Detection Technology
We invest in professional-grade electronic leak detection instruments. Unlike basic visual inspections, our equipment can identify leaks beneath liners, inside walls, and deep underground without unnecessary excavation or guesswork.
Pressure Testing
Before sonic detection, we pressure test each plumbing line with air and water. This confirms whether a given line holds pressure, which immediately flags problem lines and begins our diagnostic process.
Electronic Signal Detection
For vinyl liner leaks, our equipment transmits a low-frequency electrical signal through the water. Specialized probes scan the liner floor and walls, homing in on any break in the material with pinpoint accuracy.
Sonic Detection
For underground plumbing, we use sensitive acoustic listening equipment to detect the sound signature of pressurized water escaping from a pipe. This allows us to locate a problem within inches, minimizing any necessary digging and saving you money.
For standard concrete deck leak repair, we cut the concrete deck and remove stones to expose the leak. Leak detection for a pool with patio stone or interlocking deck is often less expensive than leak detection for a standard concrete deck. In most cases, with very little digging, we can expose the pool leak and begin the repair. When more than one plumbing leak exists in the same line, a quote will be presented at the time of discovery. Our experts will re-test the repair, backfill the hole and re-concrete or replace the patio stones.
Pressure Test Lines & Sonic Leak Detection
$475
Detection fee only. Repair pricing provided separately after the leak is located. Pricing subject to HST.
- Pressure test all plumbing lines
- Identification of the specific line(s) failing to hold pressure
- Sonic scan to pinpoint the underground leak location
- Explanation of findings and recommended next steps
About Us
Scarborough's Pool Leak Detection Experts
At Selleck Pool Inc., our experts have over 40 years of experience. We have sonic and video equipment for effective leak detection, isolation and repair. We even provide this service to other swimming pool companies!
Selleck Pools Inc. is certified as a swimming pool and spa operator with the National Swimming Pool Foundation, a past member of the Pool and Hot Tub Council of Canada and registered with the Technical Standard and Safety Authority. We have a PADI certified advanced scuba diver to offer premium leak detection services.
We provide pool leak detection and repair services throughout Scarborough and the surrounding communities, including Pickering, Ajax, Whitby, Markham, North York, East Toronto and Durham Region.
Think you have a leak? Let's Find it.
Stop topping up and start getting answers. Call us today for a same-season appointment — we’ll tell you exactly what’s happening and what it will cost to fix it.