Quote Originally Posted by LittleRock View Post
Exactly. Most backpacking filters remove particles, bacteria, and viruses but not pesticides or other hazardous chemicals which may also be in the water in more civilized areas like the Cumberland Valley in PA. Also if the water's dirty or stagnant the particles can clog your filter.
Most actually don’t remove viruses. Which in most cases in the US is okay. Would not be okay there, for me.