Leaking Alkathene Connection.
Fortunately this leak was an easy one to find, just dig down where the water was ponding.
When I exposed the leak an old tee was spraying out water. After digging out to give myself room to work. I cut the tee out. The difficulty is that it was between 3 fixed points. The benefit of the three other connections, is that it gives you the flexibility you need to make sure the pipe goes fully home into the join and sealing as it should.
If you have any signs of water leaks around your property, give me a call. Meeting your plumbing needs.