The composite weight overlay of water quality index employs a total of 10 spatial and water quality parameters according to the inverse exponential distance weighting scheme [9]. The spatial weight of arbitrary i location is obtained asrivers. Further, a principal component analysis found that TCB is redundant and can be removed from the list of independent variables, since it had a strong correlation with FCB. The specific and significant physicochemical and bacterial parameters used in the creation of water quality index therefore include BOD, DO, FCB, NO3, PO4, SS, and TS. The composite weight overlay of water quality index employs a total of 10 spatial and water quality parameters according to the inverse exponential distance weighting scheme [9]. The spatial weight of arbitrary i location is obtained as