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  • ...als, biological contaminants, suspended solids and gases from contaminated water.<ref>https://en.wikipedia.org/wiki/Water_purification</ref> ...water/drinking/travel/backcountry_water_treatment.html A Guide to Drinking Water Treatment and Sanitation for Backcountry & Travel Use]</ref>:
    7 KB (955 words) - 23:04, 28 April 2017