PUBLIC WATER FILTER is a water filter and UV sterilizer that does not require an external power source. It can be used in disadvantaged areas that are difficult to get water, and where the water is easily contaminated by bacteria and sediment. PWF provides the main material, filter bucket, and rotating UV light module to improve water pollution, reduce the incidence of disease and death, and enhance local life quality in the form of a combination package. Users can join the local natural filter material to build the PWF device and filter the water resources by rotating the PWF.

660 mio. people of the world lack clean water, mostly on Central Asia, the Middle East and Northern Africa. Only 68% of the world's population has access to good sanitation, and more than 2 billiom people worldwide lack adequate sanitation facilities. In the case of uncleab water resources and no sanitation facilities local residents directly use water resources polluted by sediments as drinking water and washing water. There is also no suitable water filtering equipment to filter large amounts of sewage.

The filtered water allows the user to clean, wash, and drink after boiling. Speaks for itselves what uncleaned water does to people.