Simple Survival Water Filter Using A 2 Liter Bottle – A Using a 2 liter bottle it is east to make this version of simple water filtration – I’ve seen a larger scale design using silk fabric for the final stage (silk being a finer weave than cheesecloth or
Survival Zombie Apocalypse: ~ This Disc Made of Clay and Sawdust Can Make Any Water Disease-Free. The PureMadi water filter might not look like much, but it can remove almost any deadly pathogen from drinking water. Plus, it’s cheap.
In case you find yourself in an outdoor survival situation. Snares and traps- Everyone should know this and about the edible plants (and be able to make a positive ID of those plants if in doubt it's best not to use).