Hydrogeochemical characterization of groundwater of peninsular Indian region using multivariate statistical techniques

• DOI: 10.1007/s13201-016-0400-9
• Publication Date: 2016-03-31T07:03:02Z
• Authors: T. German Amali J...; Kishan Singh Rawat; Anoop Mishra; Sudhir Kumar Singh
• Keywords: 13. Climate action; 01 natural sciences; 6. Clean water; 0105 earth and related environmental sciences

Groundwater quality of Chennai, Tamil Nadu (India) has been assessed during different seasons year 2012. Three physical (pH, EC, and TDS) four chemical parameters (Ca2+, Cl−, TH, Mg2+ SO4 2−) from 18 bore wells were assessed. The results showed that pH majority groundwater samples indicates a slightly basic condition (7.99post-monsoon 8.35pre-monsoon). TH was hard [322.11 mg/lpre-monsoon, 299.37 mg/lpost-monsoon but lies under World Health Organization (WHO) upper limit]. TDS, Ca2+ concentrations WHO permissible limit post-monsoon (1503.42 μS/cm, 1009.37, 66.58 32.42 mg/l respectively) pre-monsoon (1371.58 946.84, 71.79 34.79 mg/l, respectively). EC shows good correlation with 2− (R 2 = 0.59pre-monsoon, 0.77post-monsoon) which plays major role in ground water wells. also positive correlations TDS 0.84pre-monsoon, 0.95post-monsoon) 0.70pre-monsoon, 0.75post-monsoon). principal component analysis (PCA)/factor (FA) carried out; Factor1 explains 59.154 69.278 % the total variance pre- post-monsoon, respectively, strong loading on Ca2+, Mg2+, 2−, negative pH. Factor2 accounts for 13.94 14.22 characterized by only poor/negative post-monsoon. We recommend routine monitoring thorough treatment before consumption. Further, this study demonstrated effectiveness PCA/FA to assess hydrogeochemical processes governing chemistry area.