Evaluation of irrigation water quality in groundwater well water in Seyfe Lake Basin

Abstract

Groundwater is a significant water resource widely used for drinking, irrigation, and industrial purposes. Therefore, the determination and evaluation of quality parameters are of great importance for the sustainable use of groundwater resources. This study was conducted to evaluate the irrigation water quality of groundwater wells in the Seyfe Lake Basin and to determine the variation in groundwater quality parameters. Water samples were taken from six groundwater wells during pre-irrigation (June) and post-irrigation (September) periods of the years 2008-2009. Some physicochemical parameters were determined, such as: EC, pH, Na⁺, K⁺, Ca⁺², Mg⁺², Cl^-, ,, HNO₃, NH₃, total salt content, and water hardness. The parameters of sodium adsorption ratio, residual sodium carbonate, and sodium percentage were computed to evaluate water quality. For statistical analysis of the data, the repeated measurements method was employed.  Water samples were evaluated according to the criteria of the Water Pollution Control Regulation and the researchers determined that based on the electrical conductivity, total amount of salt, percent sodium, sodium, chloride, and nitrate values of the groundwater well, it cannot be used for irrigation water due to higher than the permissible values of the usable water.