Water quality in Songhuaba Reservoir in North Kunming has been polluted since 1991 because of soil and water loss,farmland fertilizer and pesticide, domestic wastes and sewages and dejecta of animals.

• 位于昆明市北郊的松华坝水库,1991年起水质受到污染,原因有水土流失、农田化肥和农药、生活垃圾和污水、畜禽粪便等。