A Homeowner’s Guide to Identifying Pool Leaks
If you own a pool in Central Florida, you already know that some water loss is normal — especially during hot, dry stretches. But when your pool starts dropping fast, it’s not just evaporation. It’s often a sign of a leak that needs attention before it becomes costly.
At NuWave Pools, we help homeowners understand the difference between normal water loss and a true leak — and what to do next.
What’s Normal vs. Not Normal?
Most unheated pools lose about ¼ inch per day to evaporation. In hotter, windier conditions, you might see up to ½ inch.
Anything beyond that is a red flag.
And if your pool is dropping 2+ inches per day, you’re likely losing hundreds of gallons daily — far beyond what weather can explain.
The Three Most Common Causes of Rapid Water Loss
1. Structural Leaks in the Pool Shell
Cracks, failing seals, gaps around fittings, or tile‑line separation can allow water to escape under constant pressure. These leaks are often underwater, so homeowners don’t always see puddles or obvious signs.
Common structural leak points include:
Cracks in plaster or fiberglass
Separation around return jets
Skimmer faceplate gaps
Light niches
Tile‑line cracks
2. Underground Plumbing Leaks
These are extremely common — and extremely hard to spot without professional tools.
Signs include:
Pool loses water faster when the pump runs
Persistent wet spots near the deck or equipment pad
Air bubbles in the pump basket
Chemistry becomes difficult to maintain
Because the water escapes into the soil, homeowners often never see visible leakage.
3. Equipment Pad Leaks
Pumps, filters, heaters, valves, and unions can leak under pressure or when the system shuts off.
You might notice:
Water pooling near equipment
Drips around valves
Moist soil near the pad
These leaks are often mistaken for splash-out or backwashing.
How to Confirm If It’s Evaporation or a Leak
Perform the 48‑Hour Water Loss Test
This simple test gives you a reliable baseline:
Turn off water features
Let the water settle
Mark the water level inside the skimmer
Photograph the starting level
Run the pump normally for 48 hours
Re-measure and photograph the new level
Interpretation:
Up to ½ inch loss → likely normal
More than ¾ inch loss → strong leak indicator
If you’re losing more than 1 inch per day, you can skip the test — it’s almost certainly a leak.
Can Leaks Be Repaired Without Draining the Pool?
Often, yes.
Many structural leaks can be repaired underwater using professional-grade epoxy. This avoids draining the pool and reduces risk to the shell.
However, some issues require construction-level repairs:
Broken underground plumbing
Major structural cracking
Damaged skimmer body
Equipment replacement
Accurate diagnosis is the key — otherwise you’re patching symptoms instead of solving the root cause.
Why You Shouldn’t Ignore Rapid Water Loss
Losing multiple inches per day can lead to:
Chemical imbalance from constant refilling
Pump damage from sucking air
Soil erosion under the deck
Higher water bills
Small leaks rarely fix themselves — they usually worsen over time.
When to Call NuWave Pools for Leak Detection
If your pool is losing water faster than normal or requires frequent refilling, it may be time for a professional evaluation.
NuWave Pools helps Central Florida homeowners:
Identify potential leak sources
Determine the appropriate repair
Address issues before they lead to further damage and water waste
Concerned about your pool’s water loss? Contact NuWave Pools to discuss your concerns and request a quote.
