Please double-check my approach.

I have a couple of foodsafe 55 gallon plastic drums I store water in. The goal is safe drinking water storage for about a year.

The recipe I've been using is 55 gal. tap water, 10 tablespoons regular, UNcented bleach.

Seem reasonable?

Thanks,

-john

John... you are high on the chlorine level by FEMA guidelines...they recommend if you use city water supply (with already added chlorine) no additional chlorine is needed for yearly storage ...then rotate

with untreated well water the concentration would be for...
6% Clorox recommendation for untreated water is 8 drops per gallon...

8 drops is 1/8 teaspoon...
1/8teaspoon x 55gallons = 6.9 teaspoons....
3 teaspoons = 1 tablespoon...
6.9 divided by 3 = 2.3 tablespoons

the best answer is to get a pool chlorine test kit and determine the parts per million...IIRC the guideline is .5 - 1.5ppm.... anything over 5 ppm is hazardous to your health

Thanks! I think I might try 1 tablespoon and see if I can find a test kit.

-john