江苏省启东市是我国肝癌高发区之一。自1972年以来,不同作者、不同时间进行多次调查。均发现肝癌发病率高低与饮水类型有关。概括的说,即饮地面水,如宅沟水、泯沟水及河水居民的肝癌发病率显著高于饮井水者。本文应用DNA合成抑制试验(DSI)来检测宅沟水、井水及自来水中的诱变或致癌作用。 Qidong City, Jiangsu Province is one of the high-risk areas of liver cancer in China. Since 1972, many authors have conducted multiple surveys at different times. The incidence of liver cancer was found to be related to the type of drinking water. In summary, the incidence of liver cancer in ready-to-drink surface water such as Zhaigou water, Diangou water, and river water residents is significantly higher than that of drinking water wells. In this paper, the DNA synthesis inhibition test (DSI) was used to detect mutagenic or carcinogenic effects in Zhaigou water, well water, and tap water.