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为了对农村改水效益进行综合评价，我们按照国家水质分析的标准方法计算改水后水质中的细菌总数和大肠菌群下降５０％，水质综合指数为改水前的１９％；用环境流行病学的调查方法，在１１６０２名人群中与饮水有关的甲型肝炎、伤寒、痢疾和肠炎每年的发病率比改水前分别减少２．２０‰、０．３９‰、２．７０‰和１４．３０‰；用人力资本法计算得出减少上述疾病的经济损失为３７２３８元／年，节省取水劳动力时间获取的经济效益为１９８６４４元／年；改水后增加家庭经济收入１６４１８８元／年。由此得出农村改水效益综合评价的指标为水质综合指数，肠道传染病的发病率，健康损害的经济损失、节省取水劳动力时间及家庭的经济收入。
In order to comprehensively evaluate the benefits of water diversion in rural areas, we calculated the total number of bacteria and the coliforms in the water quality after water diversion by 50% according to the standard method of national water quality analysis, and the water quality comprehensive index was 19% before the water diversion; According to the survey method, the yearly incidence of hepatitis A, typhoid, dysentery and enteritis related to drinking water in 11,602 people decreased by 2.20 ‰, 0.39 ‰, 2.70 ‰ and 14 respectively. 30 ‰; calculated using the human capital law to reduce the economic losses of the disease was 37,238 yuan / year, save water labor time to obtain economic benefits of 198,644 yuan / year; increase household income 164,178 yuan / year. The results show that the index of comprehensive evaluation of water diversion benefits in rural areas is comprehensive index of water quality, incidence of intestinal infectious diseases, economic loss of health damage, labor saving time of water extraction and family economic income.