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目的:了解绵阳市重灾区5.12地震一个月后生活饮用水卫生恢复状况,为政府制定干预措施提供依据。方法:在受灾最严重的北川、平武、安县和江油四个县(市)连续监测集中式供水出厂水和末梢水,开展灾民安置点的快速监测工作。结果:四个重灾区集中式供水出厂水和末梢水的总合格率为82.50%、82.38%,安置点饮用水快速检测余氯合格率为93.88%。出厂水、末梢水、余氯快检合格率在6月1日时只有76.47%、71.15%和84.24%,到6月24日时已逐日回升,都已超过95%。三项指标的合格率在四个重灾区存在显著性差异,北川和平武的各项指标相对较低。结论:四个重灾区饮用水的恢复速度有所差异,江油和安县恢复较快,北川和平武较慢。灾区饮用水已逐步好转,监测结果对保障灾区人民饮水安全有重要意义。
OBJECTIVE: To understand the sanitary recovery status of drinking water after the May 12 earthquake in Mianyang City hit hardest hit by the earthquake and provide basis for the government to formulate intervention measures. Methods: The centralized water supply factory water and the peripheral water were continuously monitored in the four counties (Beichuan, Pingwu, Anxian and Jiangyou) which suffered the most serious disaster and carried out the rapid monitoring of the resettlement sites for the victims. Results: The total qualified rate of the factory water and the peripheral water in centralized water supply in the four hardest hit areas was 82.50% and 82.38%, respectively. The passing rate of drinking water for the resettlement site was 93.88%. The passing rate of factory water, terminal water and residual chlorine in quick inspection at June 1 was only 76.47%, 71.15% and 84.24%. By June 24, the pass rate has surpassed 95%. The passing rates of the three indicators have significant differences among the four hardest hit areas, and indicators for Beichuan and Pingwu are relatively low. Conclusion: The recoveries of drinking water in the four hardest hit areas are different, Jiangyou and Anxian recover quickly, and Beichuan and Pingwu are slower. The drinking water in the affected areas has been gradually improved, and the monitoring results are of great significance to ensuring drinking water safety for people in disaster areas.