Hydrogeochemical characteristics and quality assessment of groundwater in Balikligol Basin, Sanliurfa, Turkey

The Balikligol Basin (Sanliurfa) is located in southeastern Turkey. The basin groundwater is used for drinking, domestic use and irrigation. In this study, the seasonal groundwater from wells and springs of the basin was analyzed hydrogeochemically and evaluated for irrigation suitability for 1 year. The study consists of geochemically controlling the dissolved matter concentration of the groundwater in the basin as well as the decomposition of silicate into Ca and Mg values. In terms of hydrochemical facies, six types of facies have been identified in the Piper classification and the predominant water is Ca–HCO 3 water. According to some indexes and classifications such as EC, TDS, Na%, TH, SAR, RSC, MH, PI (except N4), US salinity level and Wilcox, the groundwater in the Balikligol Basin was characterized as being suitable for irrigation. The groundwater has not exceeded the maximum acceptable values of national and international classifications in terms of drinking and irrigation. As a result, it can be stated that groundwater resources in the basin are affected by water–rock interaction rather than anthropogenic factors.