Treating water with bleach is a simple process and quite effective for killing harmful germs. It will not kill some protozoa, however.
You can use plain chlorine bleach (5.25-6% sodium hypochlorite) that has no additives. Many laundry products today are sold with additives like scents and cleaners, so make sure only pure bleach is used.
- Remove floating materials first
- Let the water sit for up to 24 hours so dirt or other suspended material settles to the bottom
- After dirt settles, transfer cleaner water over sediment to a clean container
- Run the clean water through a filter
- Add 16 drops of bleach for each gallon of water to be treated and stir
- Let the bleached water stand for at least 30 minutes
- Test the water by smelling it to detect a light bleach scent
- If no bleach scent, repeat the treatment
- If still no bleach scent, discard the water
because it is too contaminated for drinking