The study was carried out as part of the Environmental Monitoring Programme on Water Quality taken up by the Kerala State Council for Science, Technology and Environment. The survey revealed that 67% of the water samples collected from the Mogral river basin were of poor quality while 23% were of marginal quality. All the water samples collected from the Pambar river basin were found to be of marginal quality indicating that the water could be used for drinking only after disinfection. The water quality in the Bhavani river basin ranged from good and fair to marginal. Analysis of the surface water samples collected from the Shiriya river basin showed that 20% were of poor quality and 80% of marginal quality.

Source: The Hindu June 05, 2017 14:48 UTC