Plumbing3

With a quick look and a hands on explanation, the series of valves in the water sytem are easily understood. The system can be easily and quickly drained. It works fully as a hook-up or from the water pump, Which is an Aquajet ES. Pulls max 6.5 amps and has up to 60 psi. Works great. You can look these up on the internet also. They are used in the high dollar rigs and are made in USA. Electronic on demand and quiet, it is attached(and removable) to a SS tray for messless draining etc.
It is inexpensively and simply possible to buy a 10" ceramic filter from "the water filter store"(60$) and a 12volt outdoor water pump with standard garden hose fittings($70Rural King or other farm store) and pump water from a flowing stream to fill the water tank safely. These filters last many gallons and are the same backcountry filters used by backpackers. Simply put the filter in the fill canister and hook up the hose, turn on the pump. You can fill the tank with clean drinking water. No RV or custom build I have seen, has set up this awesome "western backcountry hunting camp filter" settup ever.