Ok, so I got my new kitchen faucet installed. I have water at the kitchen faucet when using the fresh water tank and on city water. I have no water at the bathroom sink or shower on either city or water tank. Water to the toilet is fine. Also no apparent leaks anywhere.
Any ideas?
With no shower/sink in the bath, I imagine the outside shower is also not working, but did you check?
Hot
AND cold work on the kitchen fixture?
If you have hot and cold in the kitchen, and neither in the bath, that might indicate something, as the two systems should be separate from each other from the water heater on.
Maybe there is debris clogging the shower and bath faucet outlet? Try removing the shower head hose and see if water flows from the barb/bib/connector. The outside shower usually has very little use, and may not be clogged up.
Thats all I got for now.... Sorry.

But it may be a clue in there that sparks someone elses memory..