Is it safe to use one of those Brita pitchers to filter river and lake water while camping?
In a word, no. Brita-type filters are designed to take out waterborne contaminants such as chemicals, and to remove sediment. They aren't at all intended to "purify" water or remove biological nasties such as giardia.
See the full response and article by Doug Gantenbein on Outside Online's website here.
May 19, 2022
Outdoor Life: Do You Really Need a Water Filter for Backpacking and Mountain Hunting?
Of all the creepy crawlers, ticks keep me on high alert. They can be very tiny in the nymph stage and difficult to see. They love to hang out in tall grasses along the trail and hitch a ride on hikers passing by. I plan on treating most of my clothes and gear with Sawyer Permethrin.
Ultra-compact and lightweight
I would often just drink directly from the sawyer squeeze if I was feeling lazy- which by the way works wonderfully.