VOLUME II: Wastewater Use in Agriculture

VOLUME III: Wastewater and Excreta Use in Aquaculture

VOLUME IV: Excreta and Greywater Use in Agriculture

Updated from the original 1973 and subsequent 1989 documents, this report from the World Health Organization discusses the use of wastewater, excreta and greywater in agriculture and aquaculture, which is
increasingly considered a method combining water and nutrient recycling, increased household food security and improved nutrition for poor households. It was necessary to update the Guidelines to take into account
scientific evidence concerning pathogens, chemicals and other factors, including changes in population characteristics, changes in sanitation practices, better methods for evaluating risk, social/equity issues and sociocultural practices. There was a particular need to conduct a review of both risk assessment and epidemiological data.