International Science Community Association International Research Journal of Environmental Sciences 2319 - 1414 6 9 2017 09 22 Hydrochemistry of groundwater and quality assessment of Manipur Valley, Manipur, India 8 18 EN Peter Nabam 1 School of Medical Science and Technology, Indian Institute of Technology Kharagpur, West Bengal, India Majumdar Jayjeet 2 School of Medical Science and Technology, Indian Institute of Technology Kharagpur, West Bengal, India Biswas Gaurav 3 School of Medical Science and Technology, Indian Institute of Technology Kharagpur, West Bengal, India Singh Harpreet 4 School of Medical Science and Technology, Indian Institute of Technology Kharagpur, West Bengal, India Francis Nimmy 5 School of Medical Science and Technology, Indian Institute of Technology Kharagpur, West Bengal, India Sengupta Anirrudha 6 Department of Civil Engineering, Indian Institute of Technology Kharagpur, West Bengal, India Mitra Anirban 7 Department of Computer Science and Engineering, Vignan Institute of Technology and Management, Berhampur, Odisha, India Mitra Analava 8 School of Medical Science and Technology, Indian Institute of Technology Kharagpur, West Bengal, India Singh E. Jayantakumar 1 Department of Chemistry, Manipur University, Canchipur, Imphal, India Singh N. Rajmuhon 2 Department of Chemistry, Manipur University, Canchipur, Imphal, India Gupta A. 3 Department of Environmental Sciences, Assam University, Silchar, India > Research Paper 2017 4 24 2017 09 22 The present study aims to understand the hydrogeochemical characteristics and groundwater quality of Manipur Valley, Manipur, India. A total of 145 groundwater samples were collected and analyzed for different physico-chemical parameters such as pH, electrical conductivity, turbidity, dissolved oxygen, phosphate, nitrate, total hardness, chloride, total dissolved solids, total alkalinity, sodium, potassium, calcium and magnesium, following the standard procedures. The analytical results were compared with drinking water guideline values of the Bureau of Indian Standards (BIS) and the World Health Organization (WHO). The concentrations of several variables like conductivity, total dissolved solids, turbidity, chloride, phosphate and sodium were beyond their desirable limits for drinking water in a number of sites. To determine the suitability of groundwater for agricultural use, chemical indices like percent sodium (Na %), sodium adsorption ratio (SAR), magnesium ratio (MR)/magnesium hazard (MH), permeability index (PI) and Kelley’s ratio (KR) were calculated. Based on the analytical results, majority of water sources of the area are unsuitable for irrigation purposes. Gibb’s ratio was also calculated to understand the mechanisms controlling groundwater chemistry of the study area. Copyright@ International Science Community Association