Conclusion Organic extracts of CDW from three raw water sources of C river, H river and D lake in Wuhan could induce DNA strand breaks in HepG2 cells.

• 最高浓度氯化饮水有机提取物诱导 Hep G2 DNA损伤的强度 ；H水 >D湖和 C江 (均 P<0 .；0 1)。