Clean water is non-negotiable. These filtration options under $40 make safe drinking water accessible anywhere.
Sawyer Products Squeeze Filter
0.1-micron absolute pore size removes 99.99999% of bacteria and 99.9999% of protozoa. 100,000 gallon lifespan = essentially forever. Weighs 3 oz.
Water Filtration Picks
Don't: The Bleach Method
8 drops per gallon, 30-minute wait, tastes terrible, dosage is imprecise. Just buy a filter. Never risk giardia over $18.
The Difference: Filter vs. Purifier
Filters remove bacteria and protozoa (99.99%+) but let viruses through. Purifiers kill viruses too, required in developing countries or areas with human contamination.
For most US/Canada camping: a filter is sufficient.
Alternative: UV Sterilization
SteriPEN Ultra ($99.99) kills 99.99% of bacteria, viruses, and protozoa in 90 seconds. No filter to replace. Expensive upfront, cheap long-term.
Not recommended as primary budget option, but worth considering for heavy use.
Never risk giardia. Filter all stream water unless you're 100% certain of its purity.
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