[77newell]

I think your filter (just before water goes up to the house) is in a great place. It allows filtering of city water from a direct hookup which my wife appreciates. Filtering water coming from the tank allows adding chlorine to the tank for sanitizing the water, not the tank and system, and then removing the taste before using. I am planning to use just a single carbon filter since it will also remove sediment and my annual usage (we are definitely part timers) is unlikely to result in a plugged filter.

I have a plumbed in pressure regulator that I can't verify is working (gauge broke). It is the first thing after the hose connection. I'm going to replace it with a hose mounted unit on the supply end of the hose simply because it will make the arrangements in the water compartment better.

My coach originally had standard dump valves on each side. When my holding tank died and went to sewer heaven I built a tank with only the driver side outlet. In 10 years I have never needed the passenger side so why have it. Macerator pumps are useful moving poop uphill or long distant - again something that on a couple occasions would have been more convenient but not critical. If I had it I would keep it.

I plan to use PEX for any future changes to my water supply system because it's flexible and it tolerates freezing water.