I've had this problem for about five years. I've been told that it will stop as it get older. It is about 3/4 acre with a clay bottom over a sandy area. It will leak down about 1/2 inch a day. I've put in everything to help slow it down, but nothing seems to work. If I could just locate the spot or spots maybe I could slow it down. Is their a method I could use to help with this?