How to determine if your pool is losing water due to evaporation or a leak

Conduct a bucket test and use the pool leak calculator below to determine how many gallons you are losing over a 24-hour period.

Bucket Test Procedure:

  1. Bring the pool water to its normal level
  2. Fill an empty bucket with pool water to about one inch from the top of bucket. (By filling the bucket close to the top you are ensuring that air movement over the surface of the bucket will similar to that of the pool.)
  3. Place the bucket on the first or second step of the pool. To keep it from floating away it may be necessary to place a few bricks or rocks into the bucket. (By placing the bucket in the pool water you are ensuring that the water temperature of each will be similar).
  4. Mark the water level inside the bucket.
  5. Mark the water level of the pool on the outside of the bucket, on the pool wall, or skimmer faceplate.
  6. Operate the pool for 24 hours as it had been operated when a leak was first suspected.
  7. After 24 hours, compare the two levels. If the pool water (outside mark) goes down more than the inside water level, there is probably a leak.
  8. Call us to request service. 305-849-7705

Swimming Pool Water Loss Calculator

Use the calculator to determine the amount of water loss over a period of time.
The measurement from the bucket test will be used in the section of “Water Loss (inches per day)” as it measures the level of water drop over a 24 hour period.

Input your pool dimensions and the water loss measurement from the bucket test to see how much water is lost in per day, hour, and minute.

Water loss information helps the leak specialist to determine the size of the leak under investigation.


Length (feet)

Width (feet)

Water Loss (inches per day)

Gallons per day loss

Gallons per hour loss

Gallons per minute loss

Circular Pool Calculator

Diameter (feet)
Water Loss (inches per day)

Gallons per day loss
Gallons per hour loss
Gallons per minute loss