[Kartographer]

Use regular household bleach, which the only active ingredient is ‘sodium hypochlorite’.

At one time bleach contained a concentration of 5.25% - 6% sodium hypochlorite. but now days bleach may contain a concentration of approximately 8% sodium hypochlorite almost 1/3 third more so you you need to be careful when treating small amounts of water.

Here is a chart I found that shows the difference:

Water - Bleach Ratio For Purifying Drinking Water

(5-6% Sodium Hypochlorite)
numbers are ‘rounded’

1 Quart water, 2 drops bleach
1 Gallon water, 8 drops bleach
5 Gallons water, 1/2 teaspoon bleach
10 Gallons water, 1 teaspoon bleach
50 Gallons water, 5 teaspoons bleach

Water - Bleach Ratio For Purifying Drinking Water

(8.25% Sodium Hypochlorite)
numbers are ‘rounded’

1 Quart water, 1 drop bleach
1 Gallon water, 5 drops bleach
5 Gallons water, 3/8 teaspoon bleach (or three 1/8th teaspoons)
10 Gallons water, 3/4 teaspoon bleach
50 Gallons water, 3.5 teaspoons bleach

[TigersEye]

Thanks! I had no idea the formula was being fiddled with. Amazing how powerful bleach is. A gallon of bleach could purify a heck of a lot of water.

Let’s see; 1 gal = 58,369.65 drops divided by 8 = 7,296

That would hydrate me for a while.