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Table 5 Classification of water samples analysed based on the WQI

From: Assessment of the quality of groundwater for drinking purposes in the Upper West and Northern regions of Ghana

WQI values Interpretation Number of samples (%)
<50 Excellent water 49 (98%)
50–100.1 Good water 1 (2%)
100.1–200.1 Poor water 0 (0%)
200.1–300.1 Very poor water 0 (0%)