In the 2021 water quality index (WQI) in Ghana, the mean score reached **** points, representing a fairly good water quality. This was the highest score reported since 2012 when the WQI stood at **** points. The index measures the quality of surface water, where, for instance, scores between ** and ** indicate poor quality of water, and scores greater than ** represent good or unpolluted water. According to the source, the maximum value in 2021 was reached in the main Volta basin, at Kpong.
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Water Resources Commission. (January 16, 2022). Average water quality index in Ghana from 2012 to 2021 [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 28, 2026, from /statistics/1445711/annual-mean-water-quality-index-in-ghana/
Water Resources Commission. "Average water quality index in Ghana from 2012 to 2021." Chart. January 16, 2022. ÌÇÐÄÆƽâ°æ. Accessed July 28, 2026. /statistics/1445711/annual-mean-water-quality-index-in-ghana/
Water Resources Commission. (2022). Average water quality index in Ghana from 2012 to 2021. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 28, 2026. /statistics/1445711/annual-mean-water-quality-index-in-ghana/
Water Resources Commission. "Average Water Quality Index in Ghana from 2012 to 2021." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 16 Jan 2022, /statistics/1445711/annual-mean-water-quality-index-in-ghana/
Water Resources Commission, Average water quality index in Ghana from 2012 to 2021 ÌÇÐÄÆƽâ°æ, /statistics/1445711/annual-mean-water-quality-index-in-ghana/ (last visited July 28, 2026)
Average water quality index in Ghana from 2012 to 2021 [Graph], Water Resources Commission, January 16, 2022. [Online]. Available: /statistics/1445711/annual-mean-water-quality-index-in-ghana/
