In this 2023 report from the UN Environment Program the issues of waste water pollution calls for "The need for a suite of innovative solutions would be required to engage private and public sectors to address the different geographic, climatic, social, political and economic contexts."
Washbox is one such solution that is revolutionising global construction.
wastewater_turning_problem_to_solution
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https://www.unep.org/resources/report/wastewater-turning-problem-solution#:~:text=This%20new%20report%2C%20%E2%80%9CWastewater%20%2D,blocks%2C%20described%20in%20the%20publication.