Didn't Diggers HotLine locate the buried power line before hand? In Nebraska if you dig without contacting Diggers HotLine (which in turn contacts all the utilities which might have something buried in the area ) and hit something you are liable. If you contact Diggers HotLine & the utilities come out & locate their stuff, and it is not where they said it was, the onus is on them.
That does not solve the problem of the water service which probably is on you from the corporate tap into the house, or if you are in a suburban / rural location where you have your own well.
I live in an old house which had city water & sewer added in roughly 1911 (that's when they laid the brick streets in this part of town & the water & sewer mains are buried beneath that street).
The sewer line is too shallow so I need a lift pump for bathroom & laundry in the basement, and the water service line is so "limed" up from over a century of hard water that the upstairs shower will not work if you flush a toilet downstairs or have a hose running in the yard. The sewer main is deep enough that the line could be dropped, and the water service line is directly above the sewer, so one trench would take care of both issues, but I'm afraid to get a quote from the City & a plumber for how much it would cost me to correct things.