Technology funded by the Dutch government’s Global Sustainable Biomass Fund and Hivos allows wastewater to be cleansed using animal manure contained in a bio-digester. While the solid waste is obviously filtered, the dung’s bacteria feeds on the contaminants within the wastewater. This method has shown to reduce levels of contamination by 81%. For a full article about this method, please click here:: New technology using bacteria from dung helps coffee farmers to purify water