I know that boiling and many tablets will sterilise drinking water, but one method that is often overlooked uses sunlight.
The UV from the sun will quickly sterilise water and is recognised by the World Health Organisation (WHO), UNICEF, and the Red Cross
As PET drink bottles are transparent to UV, the SODIS method is recommended as a way to treat drinking water in developing countries. See this link:
http://www.sodis.ch/methode/index_EN
Thought it might be useful information for PA members as a back-up - keep some Coke bottles
The UV from the sun will quickly sterilise water and is recognised by the World Health Organisation (WHO), UNICEF, and the Red Cross
As PET drink bottles are transparent to UV, the SODIS method is recommended as a way to treat drinking water in developing countries. See this link:
http://www.sodis.ch/methode/index_EN
Thought it might be useful information for PA members as a back-up - keep some Coke bottles