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Hydrochemistry of Groundwater in and around Chennai, India - A Case Study

Author Affiliations

  • 1 Department of Chemistry, Vel Tech Multi Tech Dr RR, Dr SR Engineering College, Avadi, Chennai-600 062, TN, INDIA
  • 2 Department of Chemistry, Sriram Engineering College, Perumalpattu, Veppampattu RS, Chennai-602 024, TN, INDIA
  • 3 School of Chemistry, Madurai Kamaraj University, Madurai 625 021, TN, INDIA
  • 4 Department of Chemistry, Vel Tech Dr RR, Dr SR Technical University, Avadi, Chennai 600 062, TN, INDIA

Res.J.chem.sci., Volume 4, Issue (4), Pages 99-106, April,18 (2014)


Groundwater quality in and around Chennai is to be known prior to its utility for the survival. With this objective, 240 samples from 60 places were collected in and around Chennai. The analysis and classification is stipulated by international standards. Hydro-chemical and statistical analysis were carried out to assess the groundwater quality. The physico-chemical parameters, sodium / chloride ratio, chloride / bicarbonate ratio, calcium / magnesium ratio are used to identify the intrusion of salt water in the coastal aquifers. Calcium / Sodium ratio is used to identify the hard rock interaction or sedimentary rock interaction. From the study, it is concluded that, groundwater in Chennai is a threat under the saltwater intrusion. The anthropogenic activity is a key factor for seawater intrusion and contamination.


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