How much bleach is safe to put into water tanks on boats?

Answer 1

Treating water with bleach is very effective at killing germs and it doesn't taste funny to most of us because this is basically what most city water supplies do. You need to have a bottle of plain liquid chlorine bleach and a dropper. The bleach should be 5 to 6 percent sodium hypochlorite with no preservatives and no additional ingredients. Do not use scented bleaches, color safe bleaches, powdered bleaches, or bleaches with added cleaners. You want the good old fashion stuff that smells like chlorine and burns holes in your clothes if you pour it right on them. Even this is hard to choose because it is now available in different concentrations. Ultra Clorox is a 6% solution instead of 5.25% but it is the same stuff. Keep a bottle of plain 5.25% or 6% chlorine bleach with no additives in the laundry room to use for water purification. Besides, this cleans sweat socks as well as any of the others. To treat water with chlorine bleach, put the water in a clean container and add 16 drops of bleach for every gallon of water. Stir in the bleach and let the water stand for 30 minutes. If the water does not have a little smell of bleach, repeat the dosage of 16 drops per gallon and let it sit for another 15 minutes. If it smells of bleach now it is OK to drink. If it doesn't smell of bleach after two treatments, the water is too dirty to use. Throw it away and treat a new batch of water. * 1 quart bottle 4 drops of bleach * 2 liter soda bottle 10 drops of bleach * 1 gallon jug 16 drops of bleach (1/8 tsp) * 2 gallon cooler 32 drops of bleach (1/4 tsp) * 5 gallon bottle 1 teaspoon of bleach From the Medical and Health Law Site