On Thu, 15 Sep 2005 11:39:56 -0400, Harry wrote:

I have a lined in-ground swimming pool - 20 x 40 - holding 28,000
gallons of water.

In the last week it has started losing water - maybe an inch a day. We
have been having dry weather - but this is the first time in a year that
I have had to add make up water.

An inch is a little over 500 gallons, so that gives you an idea of the
size of the puddle you're looking for.

We are in Tallahassee Florida.

The liner looks like it is in very good shape.

What are some good ways to find where the leak is?

A leak this size should be fairly easy to find in the liner. Put a mask
on and swim around. If it's in the bottom you'll likely find debris
collecting around the leak. If it's in the wall it shouldn't be too hard
to see either.

My bet is that you have a leak in a pipe though. Plug the vairous pipes
and remove the bug screencover on the pump (to break any siphon). Then
mark the water level on the skimmer cover with a pencil. Wait; measure.
Open the lines, one at a time (or do a binary search ;-) to see which one
is leaking.

--
Keith

Harry

PS - What is a swimming pool? A big hole in the ground where you throw
money away.