Leaks Found Since 1974
American Leak Detection is dedicated to conserving water, our most precious resource.
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How much water evaporates from a pool each day?
Pool water evaporation rates in one day or one week
It can be easy to misdiagnose pool water evaporation. Evaporation rates depend on both geographic and environmental factors. Pool owners who notice a sizeable water loss in their pool should implement the Bucket Test to determine whether their pool has a leak or is just experiencing routine water evaporation. If pool owners or maintenance workers are constantly filling up the pool, there may be a leak.
On average, swimming pools lose about a quarter of an inch of water each day, yet variations in wind intensity, humidity and sunlight can drastically change water loss rates.
Some of the strongest and most intense wind in the country can be found in mountainous regions. The wind will undoubtedly have an effect on pool water, as wind can blow water particles and cause speedy evaporation. Other windy regions include the Great Plains, the Great Lakes and most coastal locations.
If wind is not the problem, a lack of humidity may be. The central continental United States is known for its dryness, while the East and West coasts, the Great Lakes, Florida and northern Idaho are known for more humid climates. Humidity refers to the amount of moisture in the air- when air is moist, water molecules tend to stay in place, rather than infiltrating the already water-laden air. As a result, humid air keeps water in the pool, while dry air allows pool water to evaporate.
Non-humid areas also tend to be sunlight-intensive, providing another reason for pool water loss. When the sun's rays beat down most strongly, water molecules evaporate and dry up, converting to air molecules - a perfect match for the area's non-humid air! As a result, people in sunny, non-humid areas, especially the southwestern United States, can experience more pool water evaporation.
leak detection tips / resources
- the bucket test
- Is your pool needing constant refilling? You may have a hidden leak in your pool. Try the seven steps to determine if your pool is leak free. Do-it-yourself 24 hour test. Test your pool
- the meter test
- Do you have a high water bill? You may have a hidden plumbing leak. Try the seven steps to determine if your property is leak free. Do-it-yourself 30 minute test. Test your water meter
- pool leak calculator
- Use the calculator to determine the amount of water loss over a period of time. Calculate pool water loss
- frequently asked questions
- How should I choose a leak detection specialist? Get answers
- leak facts
- A 1/8 inch hole in a metal pipe, at 40 psi, leaks 2,500 gallons of water in 24 hours. Facts about leaks
- signs and symptoms
- You may have a plumbing leak if... Leak signs & symptoms
- pool safety tips
- Each year, about 260 children under 5 drown in swimming pools. The preventive measures below are essential to protect your family against drowning. Keep your pool safe
- water conservation
- Saving water is like any other habit. The more you do it, the more natural it becomes. Become water-wise, it's fun to find more ways to conserve. Conserve water
- drink tap water
- Consumers can do their part to conserve precious supplies through small, thoughtful changes in their lifestyles and activities. Learn about tap water