一、概述历史上上海郊县农民皆汲取河水、塘水饮用。由于来自生活和农业、乡村工业的污染影响,未经处理的河水、塘水已不宜直接饮用。因此在广大农村进行改水,改变农民被迫饮用污染水的状况,降低疾病,意义重大。多年来,卫生部门从防病治本出发,担负起农村改水重任。在1981～1987年的7年中,郊县饮用自来水人数增加了135万余人,自来水普及率提高 First, an overview of the history of Shanghai suburban farmers are to learn from the river, pond drinking. Due to the pollution from life, agriculture and rural industries, the untreated river water and pond water are not suitable for direct drinking. Therefore, it is of great significance in the vast rural area to change water, change the conditions of farmers who are forced to drink polluted water and reduce diseases. Over the years, the health department has taken the task of water improvement in rural areas starting from the principle of preventing and curing diseases. In the seven years from 1981 to 1987, the number of drinking tap water in suburban counties increased by more than 1.35 million, and the popularization rate of tap water increased