In the 2021 water quality index (WQI) in Ghana, the mean score reached 58.2 points, representing a fairly good water quality. This was the highest score reported since 2012 when the WQI stood at 49.6 points. The index measures the quality of surface water, where, for instance, scores between 25 and 50 indicate poor quality of water, and scores greater than 80 represent good or unpolluted water. According to the source, the maximum value in 2021 was reached in the main Volta basin, at Kpong.
Average water quality index in Ghana from 2012 to 2021
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Water Resources Commission. (January 16, 2022). Average water quality index in Ghana from 2012 to 2021 [Graph]. In Statista. Retrieved November 23, 2024, from https://www.statista.com/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. Statista. Accessed November 23, 2024. https://www.statista.com/statistics/1445711/annual-mean-water-quality-index-in-ghana/
Water Resources Commission. (2022). Average water quality index in Ghana from 2012 to 2021. Statista. Statista Inc.. Accessed: November 23, 2024. https://www.statista.com/statistics/1445711/annual-mean-water-quality-index-in-ghana/
Water Resources Commission. "Average Water Quality Index in Ghana from 2012 to 2021." Statista, Statista Inc., 16 Jan 2022, https://www.statista.com/statistics/1445711/annual-mean-water-quality-index-in-ghana/
Water Resources Commission, Average water quality index in Ghana from 2012 to 2021 Statista, https://www.statista.com/statistics/1445711/annual-mean-water-quality-index-in-ghana/ (last visited November 23, 2024)
Average water quality index in Ghana from 2012 to 2021 [Graph], Water Resources Commission, January 16, 2022. [Online]. Available: https://www.statista.com/statistics/1445711/annual-mean-water-quality-index-in-ghana/