New Delhi, May 22 (ANI): A thick layer of toxic foam was found floating on the surface of river Yamuna near Delhi’s Kalindi Kunj area. River Yamuna is again overflowing with thick foam of toxic due to high level of pollution in Delhi. The toxic chemical is cause due to dumping of waste materials into water body, industrial wastes. Primarily, during the days of lockdown Yamuna’s water was clean. But, now it has been covered in dirt.