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Globally, an estimated 2.5 billion people lack access to improved sanitation.
In the Humanitarian Innovation Fund Gap Analysis for water, sanitation, and hygiene issues, field staff identified environmental man
Household water treatment (HWTS) methods, such as boiling or chlorination, have long been recommended in emergencies.
Point-of-use water treatment (PoUWT), such as boiling or chlorine disinfection, has long been recommended in emergencies.