Potable Water
You can add 8 to 16 drops of Ultra Clorox bleach (do not use the scented bleach which has other chemicals added) to a gallon of a water and wait 30 minutes for the bleach to disinfect the contaminated water. To ensure that the bleach has disinfected the contaminated water you should have a slight taste of bleach, if not add a few more drops and wait 15 minutes. Once you know that you have added the correct amount of bleach to disinfect the contaminated water, you can aerate the purified water by pouring it back and forth between clean containers to help dissipate the bleach and make the water more drinkable. You can also add "Kool-Aide" or other drink flavored packets to mask the taste. Preventing contaminated water from entering your potable or drinking water supply system is the best policy. You should use a purifying water filter attached to the hose supplying water to your on-board potable water tank. If this is not possible, than you have to assume that your on-board water system has been contaminated and is not potable water (i.e. drinking water). If you use the water for cooking, but it must be boiled. You should make only as much potable water from the on-board contaminated water as you need, to ensure that you have purified the water enough to kill the germs. When you get to a port with potable water, you can sanitize your on-board water system by added an extremely excessive amount of bleach to sanitize the system and flush it and then add potable water just as Peggie has stated in her previous post.Clorox web site.http://www.cloroxlaundry.com/usage_disinf_water.shtml?page=disinfectingFair Winds,Clyde