Showers and dish washing are the big water wasters.
We won't be washing many dishes,couple pots and pans.Everything else will be plasticware.
This is LEARNED behavior. And with practice a great shower can be had with 2 or 3 gal of water.
In RVs I install those shower heads with the pull string to allow water to flow.When the string is released,the water stops flowing.I don't remember the manufacture right off.
The solar plastic bag showers work well, or if its cool an old pump fire extinguisher holds about 2 gal, and can be stove top heated.
I have used a 2.5 gallon chemical sprayer as a shower when land camping.Let it sit in the sun about 30 minutes and it's ready to gf course we have them dedicated to this and no chemicals have been used in them.
For rinsing dishes use a 1 quart pitcher ( 1 pint is even better!).
Never thought of that.I just fill the sink with about a gallon of water and use a rag to help rinse.
In most lakes the lake can be your supply , a simple wash down pump and cockpit showers isn't bad in summer..
I've used those outdoor showers on an RV a friend had.Powered by the water hook up and not off the self contained water tank.
Discharging waste is only a problem with cheap pumps , look for an Obendorfer (what is the heart of the usual dockside units) 10-20 years of service , but you pay up front for the pleasure of NOT repairing/replacing a black pump endlessly.
Rotary Gear Pumps, Mag Drive Pumps, Centrifugal Pumps, Rubber Impeller Pumps by Oberdorfer Pumps a subsidiary of Gardner Denver
Thanks.I will have a look at those.
FF