Christ almighty. My water line is 1’ down and electrical is about 8” 😂.

When I had a 2” line to my barn break it was fairly easy to get the area of it. Took a bit digging through oak roots to get the exact spot. Was gonna suggest similar but at 6’. Wooooh no idea how to find that easily.

Did you mark the splice locations? Or know where they are?

I do agree with many though, could be a blockage.

What did you mean by pressure drops when you cut off the spigot?