铁山区农村改水质量分析赵炎中阮显明为了解本区农村改水水质状况，指导今后农村改水工作，１９９５年８月～１０月对农村改建的自来水、压把井水质状况进行了调查，以未改进的大口井作为对照组。调查项目有：ｐＨ值、色度、总硬度、浑浊度、大肠菌群、细菌总数等６项指标... Quality Analysis of Rural Water Quality Improvement in Tieshan District Zhao Yanzhong, Ruan Xianming In order to understand the quality of water quality improvement in rural areas in the region and guide rural water improvement work in the future, from August to October 1995, tap water rebuilt in rural areas was pressed to investigate the water quality in wells The unmodified large well served as the control group. Survey items: pH, color, total hardness, turbidity, coliform bacteria, total bacteria and other 6 indicators ...