I just got a water bill for $1300. I looked at my meter, and they have the number correct, but it is not moving when I don't have any water running. The water company said we had a leak for the last couple months, and it stopped within the last few days. They also said it was most likely the sump pump. My question is, is it possible I had a leak that somehow fixed itself? Also, is it possible that it is the sump pump? If so, what would I be looking for to fix that? Most people seem to think it sounds crazy that it could be a sump pump. I just can't imagine how all that water was used and now is not being used.