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营口县农村原有32万余人直接或间接饮用下辽河水。1983年以来,通过水改现已基本上饮用了自来水。为研究水改后对预防水传肠道病的效果,我们于1986～1987年两年间对营口县以下辽河水为水源的农村自来水厂净水效果及居民肠道传染病患病情况进行了调查。 内容与方法 1.1 水质采样点 选择水源乡13所以下辽
Yingkou County, the original 320,000 people directly or indirectly drinking water under the Liaohe River. Since 1983, tap water has basically been consumed through water reform. To study the effect of water reform on prevention of water-borne enteropathy, we investigated the water purification effect and the prevalence of intestinal infectious diseases in rural waterworks that sourced water from the Liaohe River below Yingkou in the two years from 1986 to 1987 . Content and methods 1.1 Water quality sampling point selection Water Township 13 so under the Liao