We specialize in accurate pool leak inspection, underground plumbing leak detection, and non-invasive underwater pool repairs. Using advanced pressure testing and acoustic technology, we locate leaks quickly and repair them efficiently—without unnecessary digging or disruption to your backyard. Whether it’s a minor surface crack or a hidden underground issue, our Hamilton pool leak detection team ensures your pool is protected, your foundation stays safe, and your repair costs stay under control.
Kado Pools has over a decade of hands on experience providing accurate, non-invasive pool leak detection for residential and commercial swimming pools in Hamilton and surrounding communities. If your pool is losing water faster than normal evaporation, showing signs of soggy lawn areas, producing air bubbles in return jets, or requiring frequent chemical top-ups, there may be a hidden plumbing or structural issue beneath the surface.
Our professional pool leak detection services in Hamilton specialize in locating concealed leaks in vinyl liner pools, concrete pools, and gunite pools. Using advanced acoustic sonar technology, electronic liner scanning, and precision pressure testing, we pinpoint the exact source of the problem without unnecessary excavation or damage to your landscaping.
Underground plumbing leaks can silently erode soil beneath your pool, compromise decking, and place added strain on pumps and filtration systems. Even a small leak can lead to higher water bills, increased chemical costs, and long-term structural instability if ignored.
Early swimming pool leak inspection protects your investment, preserves your property value, and restores your pool’s performance quickly and efficiently. If you suspect a leak, requesting a professional assessment now can save you thousands in future repairs.
Request your free pool leak detection quote today and get clear answers from Hamilton’s trusted leak detection specialists.



Pressurized water escaping from underground pipes produces a distinct sound frequency. Using high-gain microphones and ultrasonic sensors, we “listen” through soil and concrete to locate leaks precisely.
This method allows us to find underground pool plumbing leaks, slab leaks, cracked return lines and main drain failures.
We isolate plumbing circuits — skimmers, returns, main drains — and apply controlled pressure. If pressure drops, we identify exactly which line is compromised.
Pressure testing confirms the source before excavation begins.
For vinyl pools, we use low-voltage electrical detection because water conducts electricity and vinyl does not. We can detect even microscopic liner holes invisible to the eye.

If your pool is losing water faster than normal evaporation, it may be time to schedule professional pool leak inspection. A small leak can waste thousands of gallons of water, damage surrounding structures, increase chemical costs, and lead to expensive repairs if ignored. That’s why accurate, non-invasive swimming pool leak detection is critical.

If your pool is losing water faster than normal evaporation, it may be time to schedule professional pool leak inspection. A small leak can waste thousands of gallons of water, damage surrounding structures, increase chemical costs, and lead to expensive repairs if ignored. That’s why accurate, non-invasive swimming pool leak detection is critical.

Concrete and gunite pools are durable, but over time they can develop structural cracks. Our concrete pool leak detection service identifies shell cracks, structural voids, and hydrostatic pressure damage.
Hamilton’s soil conditions and harsh freeze-thaw cycles create unique stress on in-ground pools. Over time, shifting ground and hydrostatic pressure can crack plumbing lines and pool shells.
Kado Pools specialize in:
Underground pool plumbing leaks are one of the most common and difficult issues pool owners face. When pressure lines, return lines, or suction lines develop cracks or separations beneath concrete or soil, water loss can occur silently for weeks before visible damage appears. Our underground pool plumbing leak detection process uses advanced pressure testing and acoustic diagnostic equipment to isolate each plumbing line and identify the exact source of failure. By pinpointing underground leaks without unnecessary excavation, we prevent costly deck removal and structural disruption while protecting your pool’s long-term integrity.
Concrete and gunite pools are built for durability, but over time, structural movement, freeze-thaw cycles, and hydrostatic pressure can cause cracks within the shell. Not all cracks leak — and not all leaks are visible. Our concrete and gunite pool crack detection process includes detailed structural inspection and dye testing to determine whether fractures are actively allowing water to escape. Identifying structural leak points early helps prevent soil erosion beneath the pool, decking instability, and long-term shell damage. Accurate crack detection ensures repairs are targeted and effective, rather than cosmetic or unnecessary.
Vinyl liner pools require specialized inspection methods. Punctures, seam separations, loose fittings, or liner shrinkage can lead to steady water loss that is often mistaken for evaporation. Our vinyl liner leak detection process includes detailed visual assessment and electronic liner scanning to locate even small perforations that are not visible to the naked eye. Once identified, liner leaks can often be addressed quickly using professional-grade underwater patch systems designed for durability and longevity. Proper vinyl leak detection protects liner fit, prevents further tearing, and extends the lifespan of your pool.
Leaks beneath pool decking — often referred to as slab leaks — can cause serious structural problems if left untreated. When underground plumbing fails beneath concrete slabs, escaping water can erode soil and create voids that lead to cracking, sinking, or shifting deck surfaces. Our slab leak detection process uses precision pressure testing and acoustic listening equipment to detect leaks beneath concrete without destructive demolition. Early slab leak detection minimizes the need for large-scale deck removal and helps maintain the structural stability of your pool and surrounding landscape.
Once a leak has been accurately diagnosed, precision pool leak repairs ensure the issue is corrected without unnecessary disruption. Rather than relying on guesswork, our repair approach is based entirely on detailed inspection findings. Whether the leak originates from underground plumbing, structural cracking, fittings, or liner failure, repairs are targeted and efficient. Precision repairs reduce downtime, limit water waste, and restore your pool’s performance quickly. By combining expert detection with accurate repair methods, we protect your investment and help prevent recurring water loss.
Because we focus solely on leak detection and repair, we bring specialized tools and experience that general pool service companies simply do not carry.
Not all water loss is a leak. In Hamilton’s climate, evaporation can account for
approximately 1/4 inch of water per day.
If your pool is losing more than that, it’s time for a professional inspection.
The Bucket Test
A simple bucket test can confirm whether evaporation is the cause.
(See our full Bucket Test page for detailed instructions.)
If the pool water drops significantly more than the bucket water, a leak is likely present.
Not all water loss is a leak. In Hamilton’s climate, evaporation can account for approximately 1/4 inch of water per day.
If your pool is losing more than that, it’s time for a professional inspection.
The Bucket Test
A simple bucket test can confirm whether evaporation is the cause. (See our full Bucket Test page for detailed instructions.)
If the pool water drops significantly more than the bucket water, a leak is likely present.

1. Constantly Refilling the Pool
Frequent top-offs indicate abnormal water loss.

2. Wet or Soggy Grass
Persistent damp areas near plumbing lines suggest underground leaks.

3. Air Bubbles in
Return Jets
Air entering the system often signals suction-side plumbing cracks.

4. Cracked Concrete or Loose Tiles
Structural cracks may allow water to escape.

5. Liner Wrinkles or Floating
Water behind vinyl liners causes shifting and wrinkling.

1. Constantly Refilling the Pool
Frequent top-offs indicate abnormal water loss.

2. Wet or Soggy Grass
Persistent damp areas near plumbing lines suggest underground leaks.

3. Air Bubbles in
Return Jets
Air entering the system often signals suction-side plumbing cracks.

4. Cracked Concrete or Loose Tiles
Structural cracks may allow water to escape.

5. Liner Wrinkles or Floating
Water behind vinyl liners causes shifting and wrinkling.
Ignoring a leak can lead to:
Soil washout beneath the pool shell
Deck settlement and cracking
Pool shell structural damage
Equipment burnout
Increased chemical consumption
Higher utility bills
Professional leak detection costs a fraction of structural reconstruction.

Pressurized water escaping from underground pipes produces a distinct sound frequency. Using high-gain microphones and ultrasonic sensors, we “listen” through soil and concrete to locate leaks precisely.
This method allows us to find: Underground pool plumbingaks, Slab leaks, Cracked return lines and
Main drain.

We isolate plumbing circuits — skimmers, returns, main drains — and apply controlled pressure. If pressure drops, we identify exactly which line is compromised,
Pressure testing confirms the source before excavation begin.

For vinyl pools, we use low-voltage electrical detection. Because water conducts electricity and vinyl does not, we can detect even microscopic liner holes invisible to the eye.
We proudly provide pool leak detection and repair services throughout:
Hamilton, Ancaster, Dundas, Stoney Creek, Burlington, Oakville, Grimsby
If you're searching for pool leak detection near Hamilton, ON, you’ve found the specialists.
Your swimming pool is one of your largest backyard investments. Protect it with precision diagnostics and expert repairs designed for Hamilton’s unique environmental conditions.
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