Yes, it’s excessive. You almost definitely have a leak.
While it’s hard to say exactly how much water should evaporate in a day, 4 to 5 inches is much higher than normal, said Alex Vonsiatsky, owner of Tidewater Aquatics.
There are a few ways to test it, though.
To make sure it is a leak, you can perform what is known as a “bucket test.”
Put a bucket on the top step of your pool, and fill it with water so it matches the water level of the pool. The next day, compare the water levels. If the water in the bucket is higher than in the pool, you’ve got a leak.
Now you need to determine what kind of leak you have. First test to see if it’s in the plumbing, Vonsiatsky said. Plug the lines, and use an air compressor to pump up the pressure in them. If the pressure holds, your lines are secure and you should move on to the next test. If the pressure falls, that’s where your problem is.
The other kind of leak is in the shell of the pool, and that’s more difficult to pinpoint, Vonsiatsky said. The best way is to squirt dye in areas where you would suspect a leak to occur, like around lights or drains.
Of course, if that seems a little difficult, most pool maintenance companies will take care of it for you.
Date posted: June 30, 2011
User-contributed question by:
John McEntee Sr.