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Abstract
To understanding the hydrochemical characteristics and the suitability for irrigation purposes of the groundwater, fifteen samples from different sites in the municipality of Alghurayfah, Libya were collected and analyzed.
Irrigation water quality indices were used to evaluate water quality based on the total dissolved solids (TDS), electrical conductivity (EC), sodium absorption ratio (SAR), Kelly’s index (KI), sodium percentage (Na%), residual sodium carbonate (RSC) and permeability index (PI). Furthermore, graphical representation diagrams were prepared such as USSL, Gibbs, Doneen and Wilcox.
The results indicated that the majority of the groundwater samples in the study area were suitable for irrigation. According to Gibbs classification, the majority of groundwater samples fall under rock weathering dominance. The USSLS chart indicates that the water is of low salinity and sodium, and it is of an excellent grade. Besides, Wilcox and Doneen diagrams show that the samples are safe for irrigation usage.