Mean water quality index in Ghana 2012-2021
maximum value in 2021 was reached in the main Volta basin, at Kpong.
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