This is serious problem, life threatening problem that is somewhat more critical than 'gator or snake. They at least can be eaten. Depending on where you are your options are either strain then boil (if fire wood is availible) or strain then chemical purification. Expect to have to boil for longer or have to use twice to three times (cold very dirty water) as many tablets.


One other point (pun not intentional :)): It's always preferable to keep preditors beyond arms reach. So if materials are available, make yourself a spear or a bow. Something sharp and pointy in the face is the best way (other than shooting) to discourage Critters that have you on their lunch menu.

It's always baffled me when, on programs like survivorman, one is faced with bear country why Les doesn't manufacture a spear or pick up a few rocks first.