Having running water in your off grid camper or RV is such a nice convenience. It is exhausting to pour from a jug every time you want water. And having running water is a huge moral booster.
RVs and campers already have a 12 volt system. All you need to do is provide the solar or hydro power and the water and you have a fully functional system. An RV water pump is 12 volts. If you are moving off the grid, get an old camper and gut it out for its 12 volt parts. They are so much better. It is a waste of energy to convert from 12 volts to 120 so running as many things directly off the 12 volt line is better.
Brushing teeth is so much easier with the faucet. Everything is nicer.
Follow The Off Grid Project