Watermakers are amazing inventions. Beyond that, extra water
storage is very useful. A seawater foot or hand
pump for doing the base
washing before rinsing with freshwater helps. One thing I saw done that I thought was kinda slick, was a rubber washer added to the inside of the sink aerator. It focused the water through a restriction reducing the water used, and increasing velocity out of the faucet. A bit like washing your hands with a supersoaker. The easiest way to reduce
shower water
consumption is a haircut. Short hair takes much less effort to clean and rinse, again, you can use seawater for the wash depending on your tolerance for the water temperature.
Again, a
watermaker seems like a large expense, but they often are really worth it for cruising, particularly in cleaner seawater. Echotec
watermaker is made in
Canada, and comes from the same vendor as
Hydrovane. My dad bought one for his
Jeanneau and he considers it one of the best upgrades he has done with his boat.