I'm sorry to hear about the contractor nonsense... nobody should have to put up with that ****.
4" pipe that will carry the power, communications and water.
I'm not trying to tell you your business, and I don't know the Codes in your area, but the NEC doesn't typically allow for electrical to be ran in the same conduit as copper communications or water lines. If you are opening up a trench in the ground, I'd recommend running multiple PVC conduits, each with their own purpose. Unless it's a
really long run, the benefit far outweighs the cost.
If you are running fiber optic rather than copper conductors for communications, it
might be acceptable to run in the same conduit, but I would worry about the main power conductors damaging the fiber during the pull. In my experience, a separate conduit makes it much easier in that regard, and it you have any damage and need to do another pull, you can easily do that.
For my shop, I ran a 2" PVC conduit for power, and two 3/4" conduits for comms and signal wiring. (if needed) I bought a spool of wet rated CAT 6 for my network connections, but then did more research and found that a lot of people run fiber instead due to lightning strikes. Fiber doesn't seem to care about it, but CAT 6 can take that hit right into your routers/switches on both ends, blowing out your equipment. I'm going to continue forward with what I have for now, but if I run into that in the future I'm going to switch to fiber.
Thank to you for looking out for my brothers and sisters with the Veteran suicide prevention. Are you involved with Mission 22, or another group?
Mark