How To Boil Water With A RockWes Siler6/25/14 1:07pmFiled to: Be PreparedFireBoilRockSurvivalHow toclean waterbackpackingIndefinitely Wild8810EditPromoteShare to KinjaToggle Conversation toolsGo to permalinkThe most effective way to clean found water is to boil it. But, how do you do that if you don't have a metal container? Or any container at all? With a rock of course. Tools: You're going to need a fire and obviously the ability to start one. Bonus points if you carry a method to reliably process wood and start a fire, regardless of weather conditions. You'll also need something that can hold a decent amount of water, but the beauty of this method is that you can use literally anything capable of holding water or even sterilize a puddle. You'll need a rock with a good amount of surface area, in proportion to the amount of water you're trying to boil. And, you also need some way to move said rock to your container of water; two sticks will get that job done in a pinch. ShareTweet Kinja is in read-only mode. We are working to restore service.