The water of the river Cauvery - one of the major rivers of south India that is considered sacred by Hindus and is used extensively for drinking and irrigation -- contains 28 toxic chemicals, a study has found.
Mettur's environment is contaminated with dioxins, furans and 52 other toxic chemicals, says a report titled "Unfolding Disaster: A Study of Chemplast's Toxic Contamination in Mettur", released by the Chennai-based Community Environmental Monitoring (CEM).
The study of 52 chemicals traced in the area was conducted at the behest of the West Gonur Farmers Welfare Association to verify complaints by farmers of contamination of aquifers, farmlands, streams and the Cauvery by factories of Chemplast and others.
The results have led the West Gonur Farmers Welfare Association to demand that the Central Pollution Control Board (CPCB) declare Mettur a "critically polluted area".
Chemplast was found to be discharging effluents containing 28 chemicals, including five carcinogens, into the river, the study revealed. At least six of them exceed safety standards, with concentrations of vinyl chloride 546 times, Bis (2-chloroethyl) ether 257 times, 1,2-dichloroethane 82 times and 1,2-dichlorobenzene 65 times the safe levels.
"The possible combined effect of exposure to 52 chemicals points to nothing less than a public health disaster," said Rakhal Gaitonde, a public health expert who reviewed the report.
"There is potential for serious, unpredictable and potentially irreversible consequences, as well as long-term damage to the environment, livelihoods, food and water security," he warned.