dont invest in the tabs, get unscented clorox all purpose chlorine bleach.
2-3 drops per liter, depending on clarity and if you are drinking from a pig wallow!
i like to use a mil surp canteen,u can use a gourd or sheep bladder,whatever floats yer boat...but just keep adding drops until it faintly smells of chlorine and not "muck"
just shake and let stand for a bit..
but before you collect it you shoud make a sort of sand filter and layer it inbetween leaves to get all the larger junk out.
before you leave practice on your fire making techniques.
when you get where you plan on staying for the night or cooking..start to make your fire right away.
you may run into snags along the way.
keep your flames low or dig a sort of pit for good longlasting coals...no whitman fires k!
im also a survivalist..of sorts
jamie