Evaluation of groundwater quality in and around Peenya industrial area of Bangalore, South India using GIS techniques

被引:51
|
作者
Pius, Anitha [1 ]
Jerome, Charmaine [3 ]
Sharma, Nagaraja [2 ]
机构
[1] Gandhigram Rural Inst, Dept Chem, Gandhigram 624302, Tamil Nadu, India
[2] JSYS, Bangalore, Karnataka, India
[3] Mt Carmel Coll, Dept Chem, Bangalore, Karnataka, India
关键词
Groundwater quality; Spatial distribution; Geographic information system (GIS); RISK-ASSESSMENT; SITES;
D O I
10.1007/s10661-011-2244-y
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Groundwater resource forms a significant component of the urban water supply. Declining groundwater levels in Bangalore Urban District is generally due to continuous overexploitation during the last two decades or more. There is a tremendous increase in demand in the city for good quality groundwater resource. The present study monitors the groundwater quality using geographic information system (GIS) techniques for a part of Bangalore metropolis. Thematic maps for the study area are prepared by visual interpretation of SOI toposheets on 1:50,000 scale using MapInfo software. Physicochemical analysis data of the groundwater samples collected at predetermined locations form the attribute database for the study, based on which spatial distribution maps of major water quality parameters are prepared using MapInfo GIS software. Water quality index was then calculated by considering the following water quality parameters-pH, total dissolved solids, total hardness, calcium hardness, magnesium hardness, alkalinity, chloride, nitrate and sulphate to find the suitability of water for drinking purpose. The water quality index for these samples ranged from 49 to 502. The high value of water quality index reveals that most of the study area is highly contaminated due to excessive concentration of one or more water quality parameters and that the groundwater needs pretreatment before consumption.
引用
收藏
页码:4067 / 4077
页数:11
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