Karakteristik Hidrokimia Mata Air Karst untuk Irigasi di Kabupaten Tuban

Abstract

Karst springs is one of the potential of water resources in the Tuban Regency which has an important role as a supplier of irrigation water needs on agricultural lands. The objective of this study was to hydrochemically characterize of water from karst springs used as a source of irrigation water. The hydrochemical characterization carried out included the substance identification of the chemical type of water and the appraisal of its quality as an irrigation water source. The chemical type of water was determined by using the Piper trilinear diagram. The feasibility of water quality for irrigation was assessed based on potential salinity hazards and potential alkalinity hazards. Based on the results of this study it can be shown that the hydrochemical characteristics of water from karst springs in the study area were chemical type of Ca 2+-Mg 2+-HCO3-, medium salinity hazard potential, and low alkalinity hazard potential. All water from karst springs in the study area are water with good quality for irrigation.