A dropping pool water level is easy to dismiss, especially during Melbourne’s warmer months. However, if you’re topping up your pool more often than usual, it could be more than simple evaporation. While EcoFinish Pool Resurfacing is an excellent solution for restoring ageing pool surfaces, identifying water loss early is just as important to protect your investment. Whether your pool needs leak detection, repairs, or you’re considering pool resurfacing options Melbourne homeowners trust, understanding the warning signs can save you thousands in future repair costs. Apple Pools has been helping Melbourne families maintain beautiful, leak-free pools for more than 50 years with professional pool services you can rely on.
Why Is Your Pool Losing Water?
It’s normal for swimming pools to lose a small amount of water through evaporation, splashing, and regular use. However, excessive water loss is often a sign that something isn’t right.
Ignoring a potential leak can lead to:
- Higher water bills: Constantly refilling your pool increases water usage and ongoing costs.
- Structural damage: Escaping water can weaken the soil surrounding your pool, causing movement and cracks.
- Equipment problems: Pumps, filters, and plumbing may work harder, reducing their lifespan.
- Chemical imbalance: Fresh top-ups dilute pool chemicals, making water maintenance more difficult and expensive.

The sooner a leak is identified, the easier and usually cheaper it is to repair.
How to Tell If It’s Evaporation or a Leak
One of the easiest ways to determine whether your pool has a leak is by performing the Bucket Test.

The Simple Bucket Test
Follow these easy steps:
- Fill a bucket with pool water.
- Place the bucket on the first or second pool step.
- Mark the water level inside the bucket.
- Mark the pool water level on the outside of the bucket.
- Leave everything untouched for 24 to 48 hours without swimming or topping up the water.
If the pool water level drops noticeably more than the water inside the bucket, there’s a strong chance your pool has a leak rather than normal evaporation.
Because both the bucket and pool are exposed to the same weather conditions, the difference helps identify abnormal water loss.
Common Signs Your Pool May Have a Leak
Besides the bucket test, there are several warning signs every pool owner should watch for.
Your Pool Water Drops More Than 25mm Per Week
While evaporation varies with temperature and wind, losing more than approximately 25mm each week generally indicates something more serious.
You’re Frequently Refilling the Pool
If topping up the water has become part of your weekly routine, it’s worth arranging a professional inspection.
Wet Areas Around the Pool
Soft ground, unexplained puddles, or unusually lush grass near your pool or equipment area often indicate underground water leakage.
Pool Chemicals Become Difficult to Balance
If chlorine, pH, or other chemicals seem to fluctuate more than usual, fresh water entering the pool regularly could be diluting your treatment.
Cracks or Loose Tiles
Visible cracks, shifting pavers, or lifting tiles may suggest water is escaping beneath the pool structure and affecting the surrounding foundation.
Where Do Pool Leaks Usually Occur?
Many homeowners assume leaks always come from the pool shell, but that’s not always the case.
Professional inspections commonly find leaks in:
- Pool plumbing: Underground pipes can develop cracks or loose joints over time.
- Skimmer boxes: Small structural failures often go unnoticed until water loss becomes significant.
- Pool returns and fittings: Worn seals and fittings may slowly leak beneath the surface.
- Filtration equipment: Pumps, valves, filters, and pipe connections can all contribute to water loss.

Because many leaks are hidden underground, specialised leak detection equipment is often needed to locate the exact source without unnecessary excavation.
Why Fast Action Matters
Many pool owners continue topping up the water, hoping the problem will disappear. Unfortunately, untreated leaks usually become larger and more expensive over time.
Prompt repairs help prevent:
- Structural movement: Escaping water weakens the surrounding soil, increasing pressure on the pool shell.
- Landscape damage: Gardens, paving, retaining walls, and surrounding structures can all be affected by saturated ground.
- Costly renovations: Minor leaks left untreated may eventually require extensive repairs or resurfacing.
If your pool surface is showing signs of ageing alongside a leak, it may also be the ideal time to explore pool coating Melbourne specialists recommend. Modern finishes can significantly improve durability and appearance while extending your pool’s lifespan.
Many homeowners also compare EcoFinish vs pebblecrete when planning long-term upgrades. Both offer unique benefits, but choosing the best pool surface Melbourne homeowners trust depends on your budget, design preferences, and existing pool condition.
If you’re already considering a complete pool renovation Melbourne eastern suburbs residents rely on, it’s worth understanding whether restoration or renovation best suits your situation. Read our guide on Pool Restoration vs. Pool Renovation: Which Is Right for You? to learn which option delivers the best value for your pool.

What Professional Pool Leak Detection Includes
Professional leak detection removes the guesswork and avoids unnecessary digging.
At Apple Pools, experienced technicians carefully inspect:
- The pool shell: Every visible surface is checked for structural damage or hidden cracks.
- Underground plumbing: Pressure testing helps identify hidden leaks without damaging your property.
- Pool equipment: Pumps, filters, valves, and fittings are inspected for signs of water loss.
- Skimmers and returns: These common leak points are thoroughly tested to ensure everything is sealed correctly.
Once the leak is located, you’ll receive clear recommendations outlining the required repairs before any work begins.
Why Choose Apple Pools?
With over 50 years of experience servicing Melbourne’s eastern suburbs, Apple Pools offers complete swimming pool solutions, not just repairs.
Whether you require leak detection, maintenance, resurfacing, or complete renovations, their experienced team provides honest advice and quality workmanship tailored to your pool.
From leak repairs through to EcoFinish Pool Resurfacing, Apple Pools helps homeowners protect one of their property’s most valuable outdoor features.
Ready to Protect Your Pool? Contact Apple Pools Today
Don’t let a small leak become an expensive structural repair. If your pool is losing water faster than expected, professional leak detection can quickly identify the problem and provide the right solution. Whether you’re investigating water loss, comparing pool resurfacing options Melbourne, exploring EcoFinish vs pebblecrete, or planning a complete pool upgrade, Apple Pools has the experience to help you make the best decision for your investment.
Why contact Apple Pools?
- Accurate leak detection: Specialised equipment locates leaks quickly without unnecessary excavation, saving both time and money.
- Experienced professionals: Over 50 years of trusted pool expertise across Melbourne’s eastern suburbs ensures reliable advice and lasting repairs.
- Complete pool solutions: From leak repairs and maintenance to EcoFinish Pool Resurfacing and full renovations, every stage of your pool’s care is covered.
- Tailored recommendations: Receive honest guidance based on your pool’s condition, budget, and long-term goals.
Apple Pools
Address: 899A Canterbury Rd, Box Hill South, Victoria 3128, Australia.
Phone: 03 9890 0778
Contact Apple Pools today to book a professional inspection and keep your pool safe, efficient, and ready to enjoy all year round.