Sources of extent of groundwater pollution in shallow aquifer: A | 27451
Journal of Geology & Geophysics

Journal of Geology & Geophysics
Open Access

ISSN: 2381-8719

+44 1478 350008

Sources of extent of groundwater pollution in shallow aquifer: A case study from Nellore district

International Conference on Geology

June 22-23, 2015 Florida, USA

Kasi Viswanadh Gorthi1, M Mohan Babu2 and V Varalakshmi3

Posters-Accepted Abstracts: J Geol Geosci

Abstract :

Twenty six countries including India are now classified as water deficient and nearly 230 million people are affected with water shortage. At prediction is that by 2025, one quarter of the worlds´┐Ż?? population will face severe water shortages. Due to rapid urbanization and industrialization of Nellore district, the need for ground water is increasing. Therefore in the present study five mandals of Nellore district, Andhra Pradesh situated near to sea coast is selected for this study because to examine the study area effected by seawater intrusion and other contaminations due to irrigation return flows, fertilizers, latrines, animal excreta etc. 49 water samples are collected covering the entire study at various depths varying from 5 m to 25 m below ground level. The samples are analysed for various chemical parameters like EC, Hardness, Chloride, Alkalinity etc., and compared with IS Standards. From this result it is observed that due to the indiscriminate placement of wells closer to contamination sources such as near to sea coast, agricultural land, livestock raring areas and pit latrines electrical conductivity shows high values. There is no correlation between actual depths of the wells to contamination sources. The spatial distribution of EC shows high values nearer to coast. The brahmadevam village of muthukur mandal shows the high values of EC, chloride Hardness and alkalinity. Though the nitrate contamination is very low in the study area 50% of the samples shows the high values of electrical conductivity, hardness and alkalinity. Development of a groundwater management strategy is essential for the sustainable management of ground water resources in terms quality by establishment of ground water protection zones.