WATER QUALITY INDEX FOR GROUNDWATER OF SOUTHERN PART OF BANGALORE CITY

Ravindra M.V, Sharada S.A

Abstract: Combining different water quality parameters into one single number leads an easy interpretation of an index, thus providing an important tool for management and decision making purposes. Water quality index is a statistical index and is based on the rank order of observation. The purpose of an index is to transform the complex water quality data into information that is easily understandable and useable by the general public. As a part of research work, 14 important water viz., p H , Ec, Cl, Fe, F, SO4, T.H, Ca, Mg, TDS, Na, K, Zn, NO3 were used to evaluate WQI of Southern part of Bangalore City. The water quality index number varies between (19 to122).The indices is classified as Excellent at range less than 10, Good at range 10 to 30, Medium at a range 30 to 50, Bad at a range 50 to 75, and Very Bad at a range greater than 75and the corresponding range contributed by each group is 0%, 18%, 18%, 28%, and 36% respectively

Keywords: WQI, Bangalore.

DOI: https://doi.org/10.15623/ijret.2015.0405017