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为评价新疆和田县农村改水所产生的效益，用流行病学和卫生经济学方法对其饮用水水质变化、受益人群状况、介水传染性疾病（肝炎、痢疾、伤寒和霍乱）及其经济损失进行了分析。结果表明：截止到１９９５年底，全县累计投资３４４８．３５万元。受益人口占总人口的９５％。其中饮自来水人口占８０％，饮手动泵井水的占２０％。改水后的饮用水水质有了明显的改善，其中色度、浑浊度指标均１００％达到一级水标准，１９个自来水厂源水的微生物指标９５％符合一级水标准。本次调查虽然未见介水传染性疾病的发病率明显下降，但是疾病的地区分布，流行区域较以前的流行模式有所不同，据调查，１９９６年霍乱和伤寒病例发生的区域仅局限在个别自然村，这就避免了出现大流行的可能性。从疾病的经济损失分析看，仅这四种传染病所造成的经济损失占和田县农业总产值的０．１１％。
In order to evaluate the benefits of rural water improvement in Hetian County, Xinjiang, epidemiological and health economics methods were used to analyze the changes of drinking water quality, beneficiary populations, water-borne infectious diseases (hepatitis, dysentery, typhoid fever and cholera) and their economy Losses were analyzed. The results show that: as of the end of 1995, the county has invested a total of 34,483,500 yuan. Beneficiary population accounts for 95% of the total population. Among them, drinking water accounts for 80% of the population, drinking hand pump well water accounts for 20%. The quality of drinking water after the water improvement has been significantly improved, of which 100% colorimetric and turbidity indicators to reach a water standard, 19 water plant source water microbial indicators 95% in line with a water standard. Although the incidence of water-borne infectious diseases has not been significantly reduced in this survey, the geographical distribution and prevalence of diseases are different from the previous epidemic patterns. According to the survey, the incidence of cholera and typhoid cases in 1996 was limited to only a few Natural villages, which avoids the possibility of a pandemic. From the analysis of the economic loss of the disease, only the economic losses caused by the four infectious diseases accounted for 0.11% of the total agricultural output of Hetian County.