GSJ: Volume 7, Issue 7, July 2019 ISSN 2320-9186 1415 Studies on Cyclic Variation in Ground Water Quality of Sandur Taluka, Bellary District, India: A Cation, Anion Balance and Statistical Approach M. Thotappaiah, * T. Suresh,* Manjappa S** and Suresh B*** *Department of Chemistry, Vijayanagara Sri Krishnadevaraya University, Bellary-583104, Karnataka, India **Department of Chemistry, University BDT College of Engineering, Davangere-577005, Karnataka, India ***Department of Civil Engineering, Bapuji Institute of Engineering & Technology, Davangere – 577 005, Karnataka, India Corresponding author:
[email protected] [email protected] ABSTRACT Declining in the groundwater quality and increasing in the anthropogenic activities at an alarming rate in parts of the Karnataka, especially in Bellary district Sandur area. Groundwater samples were collected from 50 wells and analyzed for 20 water quality parameters in three seasons (winter, summer and rainy) during the year 2017. Our finding indicates that concentration of pH, total dissolved solids, Iron, Sulphate, Chloride, Alkalinity, Total hardness, Calcium, Magnesium, Copper, Manganese, Lead, Chromium and Cadmium were found slightly above the standard limits prescribed by BIS. The results shown that groundwater quality were distinctly different between two seasons. The study also indicates that a balance in water quality was observed after the monsoon season which can be attributed to a possible dilution due to clear groundwater recharging effect of precipitation by monsoon. Various agricultural water quality diagrams and parameters such as sodium absorption ratio (SAR), sodium percentage (Na %), Residual sodium carbonate (RSC), Residual Sodium Bicarbonate (RSBC) and Kelley’s ratio revealed that most of the water samples are suitable for irrigation. Langelier Saturation Index (LSI) values suggest that the water is slightly corrosive and non-scale forming in nature.