Amid growing competition for freshwater from industry and cities, coupled with a rising world shortage of potash, nitrogen and phosphorus, an international study predicts a rapid increase in the use of treated wastewater for farming and other purposes worldwide.

Says the study, on which Tottori University and UNU-INWEH collaborated with the International Center for Agricultural Research in the Dry Areas (ICARDA), Syria, the International Water Management Institute (IWMI), Sri Lanka, and Hazara University, Pakistan: “The country level information aggregated at the regional and global levels would help in identifying the gaps in pertinent data availability and assessing the potential of wastewater in food, feed, and fish production at different scales.”

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