Globally, **** percent of wastewater flow generated by households was not safely treated in 2022. There are considerable regional disparities for wastewater treatment worldwide. **** percent of household wastewater flow is treated safely in North America and Europe, but less than ** percent is treated safely in Sub-Saharan Africa and Central and Southern Asia.
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UN-Water. (May 17, 2023). Proportion of domestic wastewater flow safely treated worldwide in 2022, by region [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 25, 2026, from /statistics/746428/wastewater-treatment-global-share-by-region/
UN-Water. "Proportion of domestic wastewater flow safely treated worldwide in 2022, by region." Chart. May 17, 2023. ÌÇÐÄÆƽâ°æ. Accessed July 25, 2026. /statistics/746428/wastewater-treatment-global-share-by-region/
UN-Water. (2023). Proportion of domestic wastewater flow safely treated worldwide in 2022, by region. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 25, 2026. /statistics/746428/wastewater-treatment-global-share-by-region/
UN-Water. "Proportion of Domestic Wastewater Flow Safely Treated Worldwide in 2022, by Region." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 17 May 2023, /statistics/746428/wastewater-treatment-global-share-by-region/
UN-Water, Proportion of domestic wastewater flow safely treated worldwide in 2022, by region ÌÇÐÄÆƽâ°æ, /statistics/746428/wastewater-treatment-global-share-by-region/ (last visited July 25, 2026)
Proportion of domestic wastewater flow safely treated worldwide in 2022, by region [Graph], UN-Water, May 17, 2023. [Online]. Available: /statistics/746428/wastewater-treatment-global-share-by-region/
