Gary...I am not an electrician but did work as one right out of high school many years ago. I do work in a related field today. I don't believe wires are allowed to be exposed like that without a covering. Direct burial to me means UF service type cable or those wires inside grey PVC for protection. Individual wires should be covered with an outer jacket or run inside a pipe. I work in the standby generator field. NO wires are allowed to be run in such a manner in any building I have even been in. I live in the northeast and have a typical deepwell installed in 1988. No inspection was ever done as I recall but there's no way I would have accepted wiring looking like that. I was present when that well was dug and connected and installed. My Code Check guide states that direct burial UF type cable needs to be protected as it enters and exits a buidling and they are talking about jacketed type cable.
Well Rich, I know you're right, the electrical code will call for conduit.
My point is that there are probably a million plus wells (that is literally and I have personally seen thousands of them in PA and in pictures from across the US where there is no conduit) installed that way and weed wackers are kept away from the wires or at least not started in the basement next to the pressure tank; or the guy cuts his wires and suffers from his dumb ass carelessness, and should learn something from that screw up but I doubt it would be to redo his wiring inside conduit.
Tell me, the next one installed like that that has a problem will be the first you ever heard of having a problem right? I'm 67 next month and I've been around wells since 1965, I can not remember any problem with wiring done that way and some were even done with Romex!! instead of pump cable.
Peter, you leave the Sparkies alone, they are already stressed enough.
Doherty, petroleum based products and PE pipe water lines should never come in contact with each other; it's a real no no getting them together. They can damage the PE (and other plastics) and can contaminate water in the line.