Effect of high nitrate contamination of groundwater on human health and water quality index in semi-arid region, South India

被引：11
作者：
Saravanan Ramalingam
Balamurugan Panneerselvam
Shunmuga Priya Kaliappan
机构：
[1] Kings College of Engineering,Department of Civil Engineering
[2] University of Naples Federico II,Department of Civil, Architectural and Environmental Engineering
[3] Nehru Institute of Technology,Department of Civil Engineering
来源：
Arabian Journal of Geosciences | 2022年 / 15卷 / 3期
关键词：
Groundwater quality; Nitrate contamination; Nitrogen pollution index; Human health risk assessment;
D O I：
10.1007/s12517-022-09553-x
中图分类号：
学科分类号：
摘要：
The specific objective of the present is to evaluate the human health issue due to the continuous consumption of nitrate-contaminated groundwater among the various age groups of people. In the study, 40 groundwater samples were collected during the post-monsoon season, and the major ions were analysed in a laboratory. Chadha plot revealed that weathering of parent rocks, ion exchange process and leaching of salts from the rocks are primary sources of groundwater contamination. Nitrate concentration varied from 24 to 78 mg/L with a mean of 46.45 mg/L. Nitrogen pollution index (NPI) value divulged that 40% and 17.5% of sample locations are moderately and significantly polluted due to elevated nitrate concentration in groundwater. The human health risk assessment model revealed that health issues are among the various age groups which are infants > kids > children > aged peoples > adults. The nitrate’s identified sources are leaching of salts from the rocks, using synthetic fertilizers, uncovered septic tanks and improper disposal of household waste from the residential area. Therefore, periodic inspection of water supply, health check-up and inspection of underground pipelines are the remedial measures that should be taken to reduce the severe effects of nitrate-contaminated drinking water in the study area.
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