Expert Verified Updated: March 2026

Pool Evaporation Loss Calculator

Estimate how much water you are losing to evaporation vs. a potential leak.

Quick Conclusion
The Pool Evaporation Loss Calculator provides instant dose calculations for pool maintenance, helping you maintain perfect water balance and extend equipment life.

Technical Comparison

FactorLow HumidHigh Humid
Evap RateFast (2x)Slow
Temp DiffHigh = FastLow = Slow
WindHigh = FastLow = Slow

Save Money

A 1/4 inch loss in a standard pool can be over 500 gallons of water per week.

Actionable Steps

The Bucket Test

To confirm evaporation, float a bucket of water in your pool and compare the drop. If the pool drops more than the bucket, you have a leak.

⚠️

Safety Warning: Sudden soil saturation around your pool is a clear sign of a structural leak.

Pro-Tip

Try the 'Bucket Test'. Float a 5gal bucket in the pool, fill it to match the pool level, and mark it. If the pool drops faster than the bucket, you have a physical leak.

Frequently Asked Questions

Normal loss?

1/4 to 1/2 inch per week is normal depending on humidity and wind.

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Get the Complete DIY Pool Maintenance Guide

Free PDF checklist including seasonal schedules, chemical balancing secrets, and maintenance tips.