Pool & Spa Leak Detection on site

Pool & Spa Leak Detection

Pools lose some water to evaporation, usually around 2 to 3mm per day in warm Australian summers. If your pool is dropping faster, especially overnight, there may be a leak. ALD uses pressure testing, dye testing, and acoustic equipment to locate whether the issue is in the pool shell, underground plumbing, fittings, returns, pump, or filter system, so repairs can be targeted instead of guessed.

Specialist non-destructive detection for pools, spas, and water bodies.

What Is Pool & Spa Leak Detection?

Pool leak detection is a specialist process of identifying and locating water loss from a pool, spa, or water feature using non-destructive methods — pressure testing, dye testing, acoustic scanning, and visual inspection of fittings and returns. It's distinct from pool maintenance or repair — our role is to find the leak, document its location, and advise on the right repair approach.

The most common sources of pool leaks are cracked or porous shell structure (fibreglass, concrete, or vinyl), faulty plumbing joints in the underground return and suction lines, worn or deteriorated fittings and fixtures, and failing waterproof seals around lights, skimmer boxes, and returns. Each type requires a different detection method, which is why specialist equipment matters.

Pool & Spa Leak Detection inspection detail

Signs You May Have This Type of Leak

  1. Your pool is losing more than 3mm of water per day in summer

  2. Water loss continues overnight when evaporation is at its lowest

  3. You're regularly topping up the pool but can't find a visible cause

  4. There are damp or muddy patches around the pool equipment or surrounds

  5. Pool chemical consumption has increased without a change in usage

  6. Cracks are visible in the pool shell or coping

  7. Your pool lights or skimmer boxes feel loose or show signs of movement

How We Detect Pool & Spa Leaks

Pool leak detection is specialist work that most general plumbers and pool technicians are not equipped to perform. We have the pressure testing equipment, dye kits, and acoustic tools to isolate the problem before anyone does any work.

Pricing Guide

$495

for a standard pool leak detection inspection.

  • Full pressure test of all plumbing circuits
  • Dye testing of suspect fittings, returns, and shell
  • Structural inspection of pool shell and equipment
  • Written report with leak location and repair recommendation
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FAQs

  • How do I know if my pool is leaking or just evaporating?

    The bucket test is the simplest check: fill a bucket with pool water to about 2cm from the top, place it on a pool step, and mark the water level in both the bucket and the pool. After 24 hours, compare the drop. If the pool has dropped more than the bucket, you have a leak. Evaporation affects both equally. If you're not sure, we can do this check as part of our initial assessment.

  • Do you need to drain the pool to find the leak?

    In most cases, no. Our pressure testing and dye testing methods work with the pool full. There are some structural cracks or fittings that benefit from the pool being partially lowered to a specific level, but a full drain is rarely required for detection. Your technician will advise if any water level adjustment is needed.

  • Can you find a leak in a fibreglass, concrete, or vinyl pool?

    Yes — all three. Each pool type has its own common leak points, and our detection methods cover all of them. Fibreglass pools often leak around fittings and lights. Concrete pools commonly develop cracks in the shell or coping. Vinyl liner pools may delaminate or split. We've worked across all pool types and all construction eras.

  • Do you repair pools as well as detect leaks?

    Pool leak repair is the only repair service we offer. For pool structural and plumbing repairs, we can locate the leak and provide the report for your pool builder or plumber to work from. We also offer pool leak repair services in most service areas — ask about this during your booking.

  • My pool has been leaking for years — is it too late to fix?

    It's rarely too late to find and fix a pool leak. What matters is identifying the source accurately so the repair addresses the actual problem. Long-term leaks can sometimes cause secondary issues (soil movement, structural settling), but our detection process identifies everything in scope. Ask your pool repairer about any secondary work once we've provided our report.

Related Services

  • Pool Leak Repair

    The only repair service we offer. For pools only. Once we've located your leak, we can handle the repair as well — seamless handoff, no coordination required. We take you from detection to completion

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  • Water Feature Leaks

    Ornamental features and water features need specialist detection — our equipment and expertise covers those too. We find leaks in circulation systems, structural features, and custom installations. We save you water costs while protecting your landscape investment.

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  • Water Leak Detection

    High water bill? Mysterious damp spot? Slow drip inside the walls? We use acoustic listening and tracer gas technology to locate water leaks precisely, without breaking concrete, tiles, or drywall. Full written report included, with repair guidance for your plumber.

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What Our Clients Say

Not sure if your pool has a leak or if it's just evaporation?

Let us do the assessment. We'll give you a clear, documented answer — and if there is a leak, we'll tell you exactly where it is.