The World Health Organization (WHO) reports that 780 million people still lack access to clean<unk>  supply. This does not include military personnel, individuals providing aid in 3rd world countries, or even people on wilderness adventures.
Primary reason for<unk>  treatment is to prevent gastrointestinal illness from fecal pollution with enteric pathogens.
Appearance, odor, and taste are not reliable to estimate<unk>  safety.
Treating<unk>  provides enormous benefits with minimal risk.
Treated<unk> , hygiene, and adequate sanitation ability to reduce diarrhea and other diseases is well documented.
94% of diarrheal cases globally are preventable.
Water purification
Poison control
Diving medicine
Blister chemical agents
Care under fire
Dialyzable drugs
Safety at sea
Dermatologic nomenclature