Re: Fresh water...
I pulled the aluminum water tank out of the boat and had a drain installed in it at a machine shop. A little bleach in the water tank every once in awhile will do wonders killing "stuff" and making the water tolerable. That being said, we only use the water in the tank for rinsing off and never for drinking. Another option (what we did before the drain was installed in the tank) would be to run the water through the fawcets until the tank is empty. Another hint, if the water pressure fluxuates excessively when the water is running at a fawcet, add a small accumulator tank to the water line. This will reduce the pump cycling on/off frequently and the water pressure at the fawcet is more constant.