济宁市城区生活饮用水水质监测结果分析

目的了解济宁市城区饮用水水质卫生状况，确保居民饮水安全。方法按照GB5749—85、GB5749—2006（生活饮用水标准》；GB5750—85、GB5750—2006（生活饮用水标准检验方法》及卫生部《生活饮用水卫生规范》2001进行进行水质全分析和结果评价。结果2003—2007年共检测水样1661件，总合格率为96．8％，5年中合格率较稳定。各类生活饮用水的合格率分别为：集中式供水为98．1％，二次供水为96．4％，自备井水为95．1％。各类生活饮用水合格率差异显著（P〈0．05）。检测项目中以总硬度、溶解性总固形物、菌落总数、大肠菌群合格率最低，分别为98．4％、98．3％、98．2％、98．3％。结论济宁市城区生活饮用水水质整体较好，但部分水总硬度、溶解性总固形物、菌落总数、大肠菌群超标严重；自备井水的卫生状况存在较大隐患，需加以改善。今后应进一步加强技术指导和水质监督监测。

Results of monitoring of drinking water quality in urban area of Jining city.

Objective To understand the sanitary conditon of drinking water in urban area of JiNing City and prevent the occurrence of water - born diseases. Methods Water quality analysis was conducted according to GB5749 - 85, GB5749 - 2006（The standards for the daily drinking water） ; GB5750 -85, GB5750 -2006 （Normal methods of calibration for daily drinking water） and （The national standards for the daily drinking water quality） （ Ministry of Health - 2001 ）. Results In 1661 samples, the total qualified rate was 96.8% , with a steady trend in the 5 years, The qualification rates of water supply, secondary and self - supply wells were 98.1% ,96.4% and 95.1%, showing significant difference （ P 〈 0.05 ）. The qualified rate of total, soluble solid, total numbers of cfu and the colony of E. coli were the lowest, 98.4% , 98.3% , 98.2% , 98. 3%. Conclusion The quality of drinking water in the urban area of JiNing City was general fine, but The the work of quality control and minitoring be strengthened to improve the sanitary condition of drking water in this city.