Why Is My Pool Losing Water? Common Causes of Leaks
Noticing your pool water level dropping faster than usual? While some water loss is normal due to evaporation and splash-out, significant or continuous water loss could mean there’s a leak. Left unaddressed, leaks can cause damage to your pool’s structure, equipment, and even the surrounding property. Here are the most common causes of pool leaks and what to look out for.
1. Evaporation vs. Actual Leak
Before assuming you have a leak, it’s important to rule out evaporation. In warm climates, pools can lose up to a quarter-inch of water per day to evaporation. A simple “bucket test” can help you determine if it’s evaporation or a true leak.
2. Leaks in the Pool Shell
Cracks in the plaster, gunite, or vinyl liner are a common cause of water loss. Even small cracks can allow water to seep out gradually, leading to larger issues if not repaired promptly.
3. Skimmer Leaks
Skimmers are one of the most common sources of leaks. Over time, the seal where the skimmer meets the pool can weaken or crack, allowing water to escape.
4. Plumbing and Equipment Leaks
Underground plumbing lines, pumps, and filters can all develop leaks due to age, pressure, or shifting soil. These leaks can be harder to detect since they don’t always show obvious signs at the surface.
5. Light Fixtures and Drains
The conduits around pool lights and main drains can sometimes be a hidden source of leaks. If not properly sealed, they can slowly let water escape from the pool.
6. Structural Movement
If your pool or deck has shifted due to soil movement, settling, or ground water, cracks can form and create pathways for water loss.
What to Do if You Suspect a Leak: If your pool is losing more water than normal and you can’t pinpoint the cause, it’s best to call in professionals. Leak detection requires specialized tools and expertise to identify the problem quickly and accurately.