Abstract
The study was conducted to evaluate the metal pollution of groundwater sources in the residential areas in the surroundings of Kadinamkulam estuary, South India using the Heavy metal Pollution Index (HPI). For the study, forty one groundwater samples were collected during pre monsoon season from the dug wells of two gramapanchayaths and the concentration of heavy metals Cd, Cu, Zn, Cr, Pb and Fe were estimated and HPI was determined. Results of HPI show that 16.66% of groundwater sources in Azhoor and 21.73% in Kadinamkulam gramapanchayaths are in the low category and the remaining wells are classified in the high and medium category. The correlation analysis revealed that the sources of metals in groundwater in the study area are the leachates from the Kadinamkulam estuary, agricultural activities and solid wastes dumped in the nearby residential area. So the present study points out the metal pollution causes the degradation of the quality of groundwater which isthedrinking water source of these gramapanchayaths.
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