Water quality is an important issue of relevance in the context of present times. The proposed model is designed to predict Water Quality Index (WQI) for Cauvery River in Tamil Nadu. A Fuzzy Inference System (FIS) simplifies and speeds up the computation of WQI as compared to the currently existing standards. In this paper, the proposed model is compared with Indian Water Quality Index (IWQI) and it is found that the designed model results in accurate prediction.

water quality index, fuzzy logic, fuzzy inference system, MATLAB.