The qualities of a water resource depend on the management of anthropogenic discharges as well as the natural physicochemical characteristics of the catchment areas (Efe et al. 2005). The statistical summary of the physicochemical parameters and limit values for drinking waters is presented in Table 1. The chemical composition of the water samples (n = 29) in the study region shows a wide range. The temperature variation ranges from 10.16 to 20 °C with a mean value of 13.7 °C. pH is one of the most important operational water quality parameters, with the optimum pH required often being in the range of 6.5–9.5 (WHO 2004). It is controlled by carbon dioxide, carbonate, and bicarbonate equilibrium (Hem 1985). The minimum and maximum values of pH were measured as 8.2 and 8.68, respectively, with a mean value of 8.4. This shows that the groundwater of the study area is slightly alkaline due to the presence of carbonates and bicarbonates from karstic rocks. EC is a measure of water capacity to convey electric current. The presence of various dissolved salts is responsible for the EC of water. The EC in the study region varied from 175 to 692 μS/cm with an average of 425.90 μS/cm. TDS is a measure of the combined content of all inorganic and organic substances contained in a liquid in molecular, ionized, or microgranular suspended form (Saravanakumar & Ranjithkumar 2011). Concentrations of TDS in water vary considerably in different geological regions owing to differences in the solubilities of minerals (WHO 2004). TDS ranged from 222.2 to 794.9 mg/L with a mean value of 465.1 mg/L. The permissible limit of TDS of drinking water is 500 mg/L (WHO 2008). The observation shows that the TDS exceeded the maximum permissible limit in 12 locations. In addition, Todd (1980) suggested that groundwater be classified using TDS into very fresh (0–250 mg/L), fresh (250–1,000 mg/L), brackish (1,000–10,000 mg/L), and saline (10,000–100,000 mg/L) (Boateng et al. 2016). According to this categorization, all the groundwater samples fell under the fresh water type in the study area. DO is an essential parameter for the survival of all aquatic organisms and oxygen is the most well established indicator of water quality (Said et al. 2004). The optimum value for good water quality is 4 to 6 mg/L of DO, which ensures healthy aquatic life in a water body (Alam et al. 2007; Avvannavar & Shrihari 2008). The in situ measured DO values of the water samples ranged from 7.1 to 10.7 mg/L with a mean value of 8.9 mg/L.