Don's drawing inspired me to draw a diagram pertaining to my previous post. (picture = 1,000 words) This is for water supply. Multiple drums at one location can be piped together for more volume. Drums in multiple locations can be piped together with the underground fill pipe and filled simultaneously, or separately, using block valves.
I think Mudhole, and Don's idea for a small septic system would work. If you don't want to go through the trouble of installing a septic system, and you're not too sqeamish, I provided a link for portable waste tanks. They have wheels. Therefore, they can be rolled off into the distance and dumped. (Note: disposable ear plugs also make good nose plugs) After dumping, cover the poop with lime or campfire ash.
The commode could be installed on a raised floor or platform inside the outhouse, high enough to allow the drain pipe to exit the outside wall, where it can be connected to a portable waste tank.
The drains for a sink and shower can spill onto the ground, in an area where you don't mind having a temporary puddle. Use eco friendly dish detergent and soap.
Portable waste tanks
