Best to boil and filter.for water, thats a bit more tricky. fire is the most important thing so that shuold be your first priority. water on hot coals until it starts to boil is the surest way to make it safe. you can also make a crude filter out of sand, rocks, big leaves, and coals from your fire.
that wouldent be a half bad idea, try to only get an hour of sleep a day and get used to surviving that way. Thats the way you'll be doing it in the military.yeah i think when i get my paycheck i will definitly get a water filtration system of some sort. thanks for the help if there are any more helpful things i need to know just throw them at me lol...becasue my step dad was talkign about dropping me off in the woods to get me ready for the army training..
(the survival part)