"There was a recent news report that the drinking water supplied by the National Water Supply and Drainage Board in Kalutara area had been mixed with saltwater as a result of sand mining. The residents in the area, claimed that sand mining at the river had deepened the river bed and the sea water had easily flown into the Kalu Ganga. This had increased the salinity in the river water".To read full story visit: http://www.dailymirror.lk/news-features/Mining-development-and-environment/131-184325