If you’ve ever noticed your pool water level dropping, you might wonder if it’s just evaporation—or something more. It’s completely normal for pools to lose some water, especially during hot, sunny Texas days. But how much loss is too much?
Typical Water Loss from Evaporation
On average, a swimming pool can lose about ¼ to ½ inch of water per day due to evaporation. That adds up to roughly 2 to 4 inches per week, depending on factors like:
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Temperature
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Humidity levels
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Wind exposure
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Pool surface area
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Water features (like waterfalls or fountains)
If you notice consistent loss within this range and no other symptoms, evaporation is likely the cause.
When It Might Be a Leak
If your pool is losing more than ½ inch per day, it could be time to look deeper. Leaks can occur in the pool shell, plumbing lines, or around fittings and fixtures. You might also see other signs, like soggy spots in the yard, air bubbles in the pump, or increasing water bills.
Simple Ways to Test for a Leak
Try the bucket test: Fill a bucket with pool water, place it on a step (with the waterline matching the pool’s), and mark the levels. After 24 hours, compare the water loss inside and outside the bucket. If the pool loses more than the bucket, you might have a leak.
Sometimes the issue lies in the plumbing system. For help tracking down and fixing underground or hidden leaks, it’s smart to work with a professional. Plumbing experts can inspect your lines and detect subtle problems that aren’t visible to the naked eye.
Final Thoughts
A little water loss is normal, especially in the summer. But if you’re constantly refilling your pool, it’s worth investigating. Keeping an eye on water levels can save you money and prevent damage down the road.
