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Increasing threat on groundwater reserves due to seawater intrusion in Contai belt of West Bengal
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Author : Souvik Chakraborty a,b, Bernadette John a, Prabir Kumar Maity a and Subhasish Das *a
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ABSTRACT
India has a long coastline. Compared to the western coastline, the eastern coast line is severely affected by seawater intrusion. The Contai town is located in Purba Medinipur district of West Bengal on the eastern coastline of India. The soil of the region is mainly of fresh alluvials. There are few rivers flowing through the region, but this surface water is not sufficient to meet the domestic, industrial, agricultural demand. With the increasing population, urbanization, industrialization, the demand for water is increasing. To meet up such water demands, over extraction of groundwater is taking place due to which there is an inward movement of sea water into the region. The data obtained from the chemical analysis carried out by SWID at selected locations of the region stand as an evidence for the above statement.
KEYWORD
Sea water intrusion, pH value, chloride concentration, total dissolved solids (TDS), iron content, turbidity, artificial recharge, ground water contamination