Sea water intrusion maybe rendering the groundwater undrinkable in South India

A group of researchers from Anna University, Chennai and University of Madras, Chennai have studied the influence of seawater intrusion on groundwater in the coastal aquifers of Kalpakkam in Tamil Nadu.

Seawater intrusion or the movement of seawater into the freshwater aquifer zone increases groundwater salinity, posing a huge environmental impact in coastal regions globally. Sea level rise and decrease in groundwater levels due to overexploitation can result in seawater intrusion; affecting major ions and nutrients in groundwater. Read more.