Impact assessment of a saline waste lagoon on groundwater pollution near a coastal aquifer in India—synthesis of geoelectrical and hydrochemical studies

• Published in: Arabian journal of geosciences Vol. 9; no. 17; pp. 1 - 9
• Main Authors: Sanam, Ramya, Pujari, Paras R., Padmakar, C., Jangam, Chandrakant, Labhasetwar, Pawan K.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.11.2016; Springer Nature B.V
• Subjects: Aquifers; Coastal aquifers; Contamination; Drinking water; Earth and Environmental Science; Earth science; Earth Sciences; Electrical resistivity; Environmental impact; Environmental monitoring; Geoelectricity; Groundwater; Groundwater pollution; Imaging techniques; Impact assessment; Organic chemistry; Original Paper; Overflow; Profiles; Seepage; Tomography; Total dissolved solids; Water analysis; Water chemistry; Water pollution; Water sampling; Groundwater pollution; Lagoon; Resistivity; IP
• ISSN: 1866-7511; 1866-7538
• DOI: 10.1007/s12517-016-2681-6

The present study is an attempt to assess the impact of a saline waste lagoon on the near subsurface through electrical resistivity tomography (ERT). Resistivity and IP imaging data have been collected on profiles close to the lagoon and at a far off location (control location). Water samples have been collected from the lagoon and a municipality drinking well close to it and analysed for the water chemistry. The geoelectrical sections indicate very low resistivity formations in the near subsurface in the vicinity of the lagoon as compared to the control profile. The water chemistry data from the monitoring well close to the profile also indicates very high total dissolved solids (8658 mg/L) and qualitatively supports the contamination of the near subsurface. The conductive formations in the vicinity of the lagoon can be attributed to the overflow from the lagoon or the seepage.