We rented a jack hammer, as all our leaks came from underneath the concrete. It came apart like warm butter, but left a mess when we were done. Fitting all the slabs back together was like some horrible puzzle.
This was the source of our other leak that happened when we used the automatic water in the back yard. I got blasted with water during our investigation.
The backyard was destroyed today when investigated what was causing the leaks. This was the source of a leak that would show up when our water main was on.