The Best Ways to Purify Water in a Survival Situation Boiling water for at least one minute kills most harmful pathogens. True False None Simply filtering water through a cloth will make it safe to drink. True False None Household bleach can be used to disinfect water if used correctly. True False None Drinking water from a fast-moving river or stream is always safe without treatment. True False None Portable water filters like LifeStraw can make almost any freshwater source drinkable. True False None Time's up Most Popular Most Popular