We purchased a 20 yr old home about 8 months ago and it came w/ a sprinkler system. The sellers were not the original owners and they claimed they weren't sure how old the system was. We had the home inspected and the system checked out fine; according to the inspector. Recently, I noticed standing water near the edge of our home, next to one of the sprinkler heads. We had a plumber come out and he found a leak in the main piping that goes into our home. He also informed us that our sprinkler sy...