Pools generally lose about a quarter of an inch of water every day due to evaporation. That said, the evaporation rate depends on several circumstances in your local environment. This means that even under typical conditions, your pool could lose thousands of gallons of water each year from evaporation.
The easiest thing to do is check an evaporation rate map for your area, such as the one made by the National Weather Service. However, if you want to estimate the specific evaporation rate in your pool, you can also measure it.
Using a tape measure or ruler, measure the distance between the surface of your pool water and the top of the pool deck. Wait a week to let the water evaporate and then measure this same distance between the water and pool deck again.
Subtract the first measurement from this second measurement to get a value for how much the water level … Read Full Post »