Umngot , popularly known Dawki river is cleanest river of Asia for its crystal clear water. It’s located in the west Jaintia hills district in the Indian state of Meghalaya. Zero pollution is the main reason behind this uniquely crystal-clear water. The village Dawki is situated at the bank of river Dawki. It's well-known tourist destination. Villagers are well aware of the main reason of popularity of this river. And they are protecting this water body from every kind of pollution.