唐山市市区二次供水水质的监测

[目的]了解唐山市市区二次供水的污染状况，找出相应的防治对策。[方法]选取25个单位，以灭菌玻璃瓶采集二次供水70份，按《生活饮用水卫生规范》（2001）进行检验和评价。[结果]70份水样中各项指标均合格的占总数的64．3％，浑浊度或者余氮不符合国家标准的占35．7％。[结论]各单位二次供水总体情况良好，主要不合格的指标为混浊度和余氮，二次供水对人们日常生活的重要性也不容忽视。应积极有效的预防各种水污染，以防止介水传染病的暴发流行。

DETERMINATION OF SECOND WATER RESOURCES QUALITY IN TANGSHAN CITY

[Objectives] To observe the pollution status of second water resources and to find out the prevention strategy. [ Methods ] Seventy samples from 25 enterprises collected by sterile glass bottle were detected and evaluated based on the hygienic standard of drinking water. [Results] It was 64.3% from 70 samples that was up to the standard for all the items. It was 35.7% that was not up to the standard for turbidity or chlorine residue. [Conclusion] The general state about second water resources was good. The main problem were turbidity and chlorine residue. It was very important for pollution control to prevent the outbreak and prevalence of infectious diseases via water.