Water level drops significantly

[patchesblur]

I know when it's hot there is a lot of evaporation of water, but this year seems to be much worse - water level dropping between 2-3 inches a day - so I have to fill it every day - does this sound like excessive - what do you recommend I check - I have not messed with any of the valves at all and I backwash at least once a week... thanks for suggestions

[TSH Tech]

Water level drops can be a pain in the you-know-what, especially if you live in a town that has uber strickt water district 'nazis'.

It's best to start out with the basic bucket test to see if it is indeed an unusual amount of evaporation or a leak that has developed.

(not endorsing this site, but they have one of the easy to follow help pages)
http://www.americanleakdetection.com/ti ... t-test.php