How to perform a “Bucket Test” to check for swimming pool leaks

Performing a bucket test is a straightforward, effective way to determine if your swimming pool has a leak. This guide provides simple instructions to help you diagnose potential water loss in your pool, ensuring your swimming pool maintenance is up to date. 

Materials Needed:  A 5-gallon bucket,  A marker or waterproof tape,  Pool water

PLEASE PERFORM 2 TESTS. One with pool filtration running, and then another with the equipment off (static test). This will help determine if the pool is leaking and if it is leaking in the shell or in the plumbing. 

Once it is determined that the vessel is losing water, then more testing by professionals will be recommended.

Steps to Perform the Bucket Test

1. Fill the Bucket: Fill the bucket with water from your pool to about three-quarters full to match the water temperature, which is crucial for an accurate swimming pool leak detection.

2. Mark the Water Level: Use the marker or waterproof tape to clearly mark the water level inside the bucket. This is essential for tracking any changes accurately.

3. Place the Bucket in the Pool: Position the bucket on a pool step. It should be submerged enough so the water inside and outside the bucket are at the same level, but not so deep that it risks tipping over. Stability is key for a reliable test.

4. Mark the Pool Water Level: You can mark the pool water level on the outside of the bucket. Alternatively, mark it at the skimmer or directly on the pool wall for easier visibility.

5. Wait 24 Hours: Let the bucket sit undisturbed for 24 hours. During this period, avoid swimming and ensure there are no significant weather changes that could influence the water levels.

6. Compare Water Levels: After 24 hours, compare the water levels. If the pool water level (marked outside the bucket) has decreased more than the water inside the bucket, it suggests a potential leak in your pool’s structure or plumbing.

7. Repeat if Necessary: Unclear results? Perform the test again with both the pool equipment running and off (static test) to pinpoint whether the leak is in the shell or the plumbing.

If your “Bucket Test” indicates a leak, it’s advisable to consult with a leak detection company to identify the precise location of the swimming pool leak. Regularly checking for leaks can save water and reduce maintenance costs, keeping your pool in excellent condition.

By following these steps, you ensure thorough leak detection in swimming pools, helping to maintain your investment efficiently.  If your leak is the result of a cracked pool shell or poor workmanship by your contractor, then it may be time to call in a construction defect expert witness. 

Scott Cohen is owner of The Green Scene Landscaping and Pools, a licensed contractor in landscape, swimming pool, and general construction. He offers landscape design, and construction defect expert witness services nationwide, and has served as an expert witness for the CSLB for over two decades. A 6-time Masters of Design Award winner, Scott has been featured as HGTV’s “Favorite Garden Artisan”, several television shows and published in numerous local and national print media. He is the award-winning author of “The Candid Contractor,” a discussion of common and uncommon mistakes made in landscape and swimming pool construction; “Outdoor Fireplaces and Fire Pits;” “Poolscapes;” “The Big Book of BBQ Plans;” “Scott Cohen’s Outdoor Kitchen Design Workbook” and “Petscaping.”

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