Dianchi Lake

This photo is taken in Dianchi lake of Kunming city. After 1970, the industrial zones and farmland areas around Kunming evacuated waste water into Dianchi Lake, resulting in a significant growth of cyanobacteria and serious eutrophication in Dianchi Lake. Although the Kunming city government has been actively trying to solve the problem of pollution in Dianchi Lake, in order to significantly improve water quality, the lake is still at a pollution level far below the level of drinkable water