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International Journal of Scientific and Engineering Research
ISSN Online 2229-5518
ISSN Print: 2229-5518 7    
Website: http://www.ijser.org
scirp IJSER >> Volume 3,Issue 7,July 2012
Assessment of Groundwater Quality Index for Upper Pincha Basin, Chittoor District, Andhra Pradesh, India using GIS
Full Text(PDF, )  PP.202-209  
Hema Latha. T., Pradeep Kumar G.N., Lakshminarayana. P, Anil. A
: Physico-chemical analysis, Water Quality Index (WQI), Spatial analysis, GIS, Groundwater, Upper Pincha Basin, Inverse Distance Weightage (IDW).
Present work is aimed at assessing Water Quality Index (WQI) for groundwater of Upper Pincha Basin, Chittoor District, Andhra Pradesh. This has been carried out by collecting groundwater samples and subjecting them to comprehensive physico-chemical analysis. Results obtained were compared with standard values recommended by WHO for drinking and public health. For computing WQI, eleven parameters viz., pH, TH, Cl, TDS, Ca, Mg, So4, No3, F, HCO3 and Na have been considered. WQI values for the groundwater samples from the study area ranges from 71.99 to 273.82. High value of WQI has been found to be mainly from excess presence of TH, Cl, TDS, Mg and HCO3. Using GIS contouring methods with Arc/View GIS 9.3, spatial distribution maps of pH, TH, Cl, TDS , Ca , Mg , So4 , No3 , F , HCO3 , Na and WQI have been created. WQI is used to assess the suitability of groundwater from the study area for human consumption. From the WQI assessment over 90% of the water samples are found to fall under poor water category. Analysis reveals that groundwater of the area needs field specific treatment before put to use.
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