2009-2013年南通市农村饮用水水质状况分析

何智敏; 黄建萍; 陈刚; 顾俊

2009-2013年南通市农村饮用水水质状况分析

Quality of Drinking Water in Rural Nantong in 2009-2013

摘要

摘要:
目的了解南通市2009-2013年农村饮用水水质状况及变化趋势。
方法从中国疾病预防控制信息系统健康危害信息系统的水专业下载2009-2013年南通市农村水质监测网报数据, 采用SPSS 19.0软件进行统计分析。
结果 2009-2013年集中式供水水质合格率依次为61.45%、68.20%、74.63%、80.04%、87.62%;不同年份枯水期和丰水期水质合格率依次为67.56%、69.50%、75.40%、81.50%、79.90%和55.34%、66.90%、73.90%、78.60%、95.30%, 枯水期水质合格率(趋势χ²=17.77, P < 0.05) 和丰水期水质合格率(趋势χ²=100.78, P < 0.05) 均逐年增高; 出厂水水质合格率依次为62.21%、66.91%、76.14%、80.67%、87.85%, 合格率逐渐增高(趋势χ²=52.96, P < 0.05);末梢水水质合格率依次为60.69%、68.01%、73.21%、79.46%、87.38%, 合格率逐年增高(趋势χ²=51.41, P < 0.05);2009-2013年以地面水为水源的水质合格率分别为73.00%、87.07%、92.36%、97.22%、100.00%, 合格率逐年增高(趋势χ²=217.13, P < 0.05);以地下水为水源的水质合格率分别为58.73%、63.10%、68.30%、66.80%、71.80%, 合格率亦逐年增高(趋势χ²=16.33, P < 0.05);2009-2013年A区、B县、C市、D市、E县、F市水质总合格率分别为94.65%、54.30%、59.87%、76.49%、77.25%、82.52%, 经检验差异有统计学意义(χ²=252.73, P < 0.05);23个水质检测指标中除氨氮、氯化物外合格率均超过90%。
结论南通市农村饮用水水质合格率逐年增高, 氨氮和氯化物是影响农村水质的主要原因。

Abstract:
Objectives To understand the quality of drinking water in rural Nantong and its changing trends in 2009-2013.
Methods The data were downloaded from the network of National Information System for Disease Control and Prevention of Health Hazards, and the statistical analysis was performed by using SPSS 19.0 software.
Results The qualified rates of centralized water supplies were 61.45%, 68.20%, 74.63%, 80.04% and 87.62% in 2009-2013. The qualified rates of drinking water in dry season were 67.56%, 69.50%, 75.40%, 81.50% and 79.90%, and those in wet season were 55.34%, 66.90%, 73.90%, 78.60% and 95.30% in a rising trend from 2009 to 2013 (χ²trend=17.77, P < 0.05 and χ² trend=100.78, P < 0.05). The qualified rates of treated water were 62.21%, 66.91%, 76.14%, 80.67% and 87.85%, in a rising trend gradually (χ²trend=52.96, P < 0.05). The qualified rates of peripheral water were 60.69%, 68.01%, 73.21%, 79.46% and 87.38% (χ²trend=51.41, P < 0.05). The qualified rates of surface water were 73.00%, 87.07%, 92.36%, 97.22% and 100% (χ ² trend=217.13, P < 0.05), while the qualified rates of groundwater water were 58.73%, 63.10%, 68.30%, 66.80% and 71.80% (χ ²trend=16.33, P < 0.05). The total qualified rates of drinking water in A, B, C, D, E and F counties from 2009 to 2013 (94.65%、54.30%、59.87%、76.49%、77.25% and 82.52%) were statistically significant different (χ²=252.73, P < 0.05). The qualified rates of 23 indexes detected for drinking water were higher than 90% except ammonia and chloride.
Conclusions The quality and pass rates of rural drinking water have increased in Nantong, but ammonia and chloride remained the major reason affecting the quality of drinking water in rural areas.

HTML全文

参考文献(8)

施引文献

资源附件(0)