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本文报道湖南农村改水水质及水源防护卫生的改善情况。改水后与未改水者比较，水质感官性状显著改良，细菌学指标合格率大幅度上升，各项指标都达标的水样数由２．９％提高到３３．８％（Ｘ￣２＝２４．９１，Ｐ＜０．０１）；水质综合指数改水后为６．６５，而未改水者达３４．８４；水源防护卫生状况明显好转（Ｘ￣２＝１１．９１，ｐ＜０．０１）。未改水对照点的条件与调查点改水前一致，故调查结果可视为改水前、后水质和水源卫生的变化。
This article reports the improvement of water quality and water source sanitation in rural areas in Hunan Province. Compared with those without water diversion, the water quality sensory traits significantly improved, the pass rate of bacteriological indicators increased significantly, the number of water samples reaching the standard of all indicators increased from 2.9% to 33.8% (X ~ 2 = 24.91, P <0.01). After the water quality index was changed to water, it was 6.65, while that of non-water diversion reached 34.84. The sanitation condition of water source protection improved obviously (X ~ 2 = 11.91, p <0 .01). The condition of unchanged control point is consistent with that before the survey, so the survey results can be regarded as the change of water quality and water hygiene before and after water diversion.