The third water mainly includes: below Dahongmen Gate of Liangshui River.Fenggangxianhe, Ganggou River, Beiyunhe, below Magezhuang Bridge of Dashi River, Xiaoqing River, Tiantang River and Long River.

• 第三类水体主要包括：凉水河大红门闸以下，凤港碱河，港沟河，北运河，大石河马各庄桥以下，小清河，天堂河，龙河。