我们结合本地的实际情况,于1992年10～11月对市区51个二次供水点进行了卫生指标监测。监测项目为色度、浑浊度、细菌总数、总大肠菌群和游离余氯。以市自来水厂的出厂水和管网末梢水作为对照。从检验结果看,市自来水厂出厂水除游离余氯有一次低于0.3mg/L,其余均在0.5～0.9mg/L,管网末梢水浑浊度有一次高于3度外,总体合格率为90％。而二次供水的总体合格率仅21.6％,其中色度均合格;浑浊度≥3度的21个,最高值达8度,合 In accordance with the local conditions, we monitored the health indicators of 51 secondary water supply points in urban areas from October to November 1992. The monitoring items are colorimetric, turbidity, total bacteria, total coliforms and free residual chlorine. The city water plant water and pipe factory outlet water as a control. From the test results, the municipal water plant water in addition to free chlorine in one time less than 0.3mg / L, the rest were in the 0.5 ~ 0.9mg / L, pipe network water turbidity at once more than 3 degrees, the overall pass rate Is 90%. The secondary water supply overall pass rate of only 21.6%, of which the color are qualified; turbidity ≥ 3 degrees 21, the highest value of 8 degrees, and