About 80 per cent of the world’s wastewater is discharged into the environment without any treatment, said a UN report released on Wednesday in Durban, South Africa, on the occasion of World Water Day.
While wastewater treatment levels can reach 70 per cent in high-income countries, the ratio in upper-middle-income and in lower-middle-income countries drops to 38 per cent and 28 per cent, respectively, said the UN World Water Development Report.
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