Application of water quality index to assessment of groundwater quality

Groundwater quality in rural areas of Zabid, Hodeidah, is predominantly suitable for drinking, with 75% classified as 'good' (Class II) and 25% as 'poor' (Class III), according to a study using the Water Quality Index (WQI). The assessment, based on 40 samples analyzed for parameters like pH, electrical conductivity, and dissolved ions, revealed that higher WQI values in some areas correlate with anthropogenic activities, including domestic and agricultural waste. This suggests that while much of Zabid's groundwater is safe for consumption, localized contamination poses risks that warrant further investigation.

Saleh, S. M. K., Al-Alaiy, S. Gh., & Abdul-Razzak, B. (2017). Application of water quality index to assessment of groundwater quality. University of Aden Journal of Natural and Applied Sciences, 21(1), 125–134. https://doi.org/10.47372/uajnas.2017.n1.a13