-Granulated Activated charcoal- common, Charcoal are packed together and catches unwanted things in water such as lead.

-Silver sterasyl ceramic- compounds of fliter act upon baceria and desease causing objects in the water. Only problem is that it’s a little expensive, not for easy home-made

-Carbon Block Filters-filters out unwanted particles, easy to make, not expensive, better removal ratio then GAC.

-Ceramic drip filter- microns remove bacteria, man-made carbon, very easy to make, only requires same size containers, knife, and other tools. - http://static.monolithic.com/edcircle/waterfilter/index.html

Portable Water Filters

-can be found in households, easy to make, and can pack.