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The best resource on Sodis is probably https://www.sodis.ch/methode/anwendung/index_EN . As WaterAid we do not actively develop or support it, as our believe is that the water needs to be safe from the source and household treatment should then not be needed. SODIS has been particular promoted for peri-urban areas (bottles are easily available and metal roofs present). However, the proper use is quite tricky and as such it is often not regarded as reliable.

Any other experiences to share?