评价饮用水的细菌污染状况,通常都是靠检验细菌总数和大肠菌群数来确定的。大肠菌群是推测肠道致病菌污染的间接指标。大肠菌群只能表明水的人畜粪便污染状况,不能表明分布在河湖水、井水等谈水中的致病菌——气单胞菌的存在情况。因此,作者在1984～1985年一年期间内对神奈川县的普通家庭157 Assessment of bacterial contamination of drinking water, usually by checking the total number of bacteria and coliform bacteria to determine. Coliform bacteria is an indirect indicator of gut contamination. Coliform bacteria can only indicate the water pollution of man and livestock excrement, can not indicate the distribution of rivers and lakes, well water talk about the presence of bacteria in the water - Aeromonas. Therefore, during the one-year period from 1984 to 1985, the author criticized the average family 157 in Kanagawa prefecture