You may want to leak check your pool. I'm only 100 miles north of you -- and I'm pretty sure you've basically had the same rain we have. A loss of 1" per day, given the weather this summer is possible but not very likely.

Regardless, you want to make sure your chlorine level is pretty high, after you wash off your roof into your pool.

http://www.poolforum.com/pf2/showthr...he-bucket-test