ACKNOWLEDGEMENT
We acknowledge the help rendered by Ms. Vasanthi and Dr. Nagaraj in analysing the water samples. We are grateful to Prof. Sukumar, for permitting us to make use of laboratory facilities. This research is supported by the Ministry of Environmental and Forests, Government of India. We lso acknowledge the co-operation of Mr.Manjunath, Mr.Hanumanth Rao and Mr. Saravanan in sampling programmes and in conducting socio- economic survey.
