49% of lake areas are covered with trees and shrubs: Report thehindu.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from thehindu.com Daily Mail and Mail on Sunday newspapers.
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Experts blame high level of pollution on poor regulatory mechanisms in place and allege that the state pollution control board has not been able to bring down pollution levels as it has not taken action against culprits
While high BOD is an outcome of a stagnant river stretch and should improve during monsoon and summer, surge in the value over the last few years during a given season is worrisome.Stagnant water also leads to the growth of invasive species