WHO Technical Note for Emergencies 5: Emergency treatment of drinking water at the point of use

Normally, drinking water supplies need to be treated during and after an emergency to make them safe and acceptable to the user. Treatment at the point of use is generally quicker and less expensive to implement than a centralized system, but it can be more difficult to manage. Only water used for drinking and preparing food needs to be treated. Nevertheless, this still amounts to about 5 litres per person per day.
 
This technical notes describes some of the most common and simple treatment options suitable for use during an emergency.

Contents:

Pre-treatment
Aeration
Storage and settlement
Filtration
Straining
Sand Filters
Ceramic Filters
Disinfection
Boiling

Chemical Disinfection
Solar Disinfection (SODIS)
Combined treatment systems

Looking after clean water
Water Storage
Hygiene Promotion