[Baz]

A sketch/schematic would be the next item to post here that would help.

Also, I'm curious what kind of "shutoff" valve you have in the front that you posted pics of. Can you post a pic of the actual valve and also the box it sits in?

Also, I wonder how deep your feed pipe is - that goes to your house - from that shutoff valve.

Maybe you could carefully dig an inspection hole and find out. Also verify it's PVC pipe and what size.

How is the soil there for digging, BTW?

Thanks!