Free Tool
Pool Water Loss Calculator
Is your pool losing water to evaporation — or a leak? Enter your pool’s numbers and get an honest answer in seconds.
Leak or Evaporation?
Every pool loses some water — the question is how much
In Houston heat, evaporation alone can pull about a quarter inch of water out of your pool every day — more when it’s windy or the heater is running. A leak pulls more, and it doesn’t take days off. This calculator compares your measured 24-hour water-level drop against typical Houston evaporation for the season and tells you whether your numbers look normal, borderline, or like a leak.
Wind, pool heaters, spa spillover, and splash-out all raise water loss beyond baseline evaporation — this tool is a screening estimate, and the bucket test is the definitive at-home check.
Next Steps
What to do if the numbers point to a leak
1. Confirm it
A 24-hour bucket test cancels out evaporation entirely — it’s the definitive at-home check before you spend a dime.
2. Narrow it down
Simple checks — pump on vs. off, a look at the equipment pad, a dye test near suspect spots — can point to where the water is going. Our guide on how to find a pool leak walks through each one.
3. Bring in the pros
If the loss is real, professional pool leak detection pinpoints it without tearing anything up — and our repairs are guaranteed.
Calculator says leak?
We’ll pinpoint it — no guesswork, no unnecessary digging.
Can’t call right now? Book online 24/7 — we’ll confirm first thing next business day.