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The application of Appropriate Technology

SODIS is a water treatment method which uses solar energy to improve the microbiological water quality. It is used at household level to treat small quantities of drinking water.

The treatment process is a simple technology using solar radiation to inactivate and destroy pathogenic microorganisms present in the water. The treatment basically consists in filling transparent containers with water and exposing them to full sunlight for about five hours.

This document details research into using this very simple method to improve the quality of water, it is available as a PDF file (520 kb).

This file is taken from the website http://www.sodis.ch, where more information including educational material can be found.