Researchers said while the major source of fluoride is the presence of fluorine-bearing minerals in rocks and sediments, human activities such as use of fertiliser and the release of untreated industrial waste add to the level.
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
A yellow spot has been getting bigger and bigger day by day at the High Court parking lot over time but no one is ready either to check the rampant public urination at the spot, beautify the area or take preventive measures by creating awareness among those responsible for the yellow spot.
However, BBMP Deputy Conservator of Forests BLG Swamy said that the proposed nursery at Dasarahalli Lake will not affect the water-holding capacity of the lake. “It will prevent the encroachment of the lake land by others. We are not putting up permanent structures on the lake land. We will also not use water from the lake for watering saplings at the nursery,’’ said the DCF.