The SODIS Method
April 20, 2010

"Solar water disinfection" - SODIS for short - offers a solution for preventing illnesses due to drinking contaminated water, one of the most common causes of death among people in developing countries.

Clean drinking water in 6 hours
The SODIS method is ideal for treating water for drinking in developing countries. All it requires is sunlight and PET bottles.

Clear PET bottles are filled with the water and set out in the sun for 6 hours. The UV-A rays in sunlight kill germs such as viruses, bacteria and parasites (giardia and cryptosporidia). The method also works when air and water temperatures are low.

Many scientific studies confirmed the effectiveness of the SODIS method. It kills germs in water very efficiently. The method has even been shown to improve the health of the population. It has also been proven that the use of PET bottles in the SODIS method is harmless.

International recognition
The World Health Organisation (WHO), UNICEF, and the Red Cross therefore recommend the SODIS method as a way to treat drinking water in developing countries.

Is it dangerous to your health to use PET bottles?
Scientific studies have confirmed repeatedly that when the SODIS method is applied correctly there is no danger to health.

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