As of 2021 in Ghana, River Ankobra (at Ampansie), River Offin (at Dunkwa), and River Pra (at Akim Brenase), registered the lowest water quality index scores. These reached points, points, and points, respectively, meaning that their water quality was deemed of poor quality. Other rivers considered here include River Densu (Mangoase and Nsawam), River Brim, and Lake Bosomtwe. The index measures the quality of surface water, where, for instance, scores between ** and ** indicate poor water quality, and scores greater than ** points represent good or unpolluted water.
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Water Resources Commission. (January 16, 2022). Rivers with the lowest water quality index in Ghana as of 2021 [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 30, 2026, from /statistics/1445746/rivers-with-the-lowest-water-quality-in-ghana/
Water Resources Commission. "Rivers with the lowest water quality index in Ghana as of 2021." Chart. January 16, 2022. ÌÇÐÄÆƽâ°æ. Accessed July 30, 2026. /statistics/1445746/rivers-with-the-lowest-water-quality-in-ghana/
Water Resources Commission. (2022). Rivers with the lowest water quality index in Ghana as of 2021. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 30, 2026. /statistics/1445746/rivers-with-the-lowest-water-quality-in-ghana/
Water Resources Commission. "Rivers with The Lowest Water Quality Index in Ghana as of 2021." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 16 Jan 2022, /statistics/1445746/rivers-with-the-lowest-water-quality-in-ghana/
Water Resources Commission, Rivers with the lowest water quality index in Ghana as of 2021 ÌÇÐÄÆƽâ°æ, /statistics/1445746/rivers-with-the-lowest-water-quality-in-ghana/ (last visited July 30, 2026)
Rivers with the lowest water quality index in Ghana as of 2021 [Graph], Water Resources Commission, January 16, 2022. [Online]. Available: /statistics/1445746/rivers-with-the-lowest-water-quality-in-ghana/
