当报告公布在每升纳克的范围内时，公众通常会表示担忧 废水中任意数量化合物的浓度。公众随后提出了问题 关于检测到的多种化合物的浓度和对健康的影响 社区废水。然后，当地公用事业公司必须尝试定义潜在的人类健康影响 化合物的浓度比目前确定的最大浓度低几个数量级 社区饮用水中的污染物水平。本文考察了公众的认知，以及 评估风险并确定最大污染物水平和候选浓度的“系统” 饮用水污染物清单，但未说明长期接触有害物质对健康的潜在影响 低浓度污染物。最后，本文还提出了一些建议，以期为电力公司员工提供教育 向公众提供答案。 包括21个参考文献和表格。

Public concerns are commonly expressed when reports are published about nanogram per liter concentrations of any number of compounds in a wastewater effluent. The public then raises questions about the concentrations and health effects of the multiple chemical compounds detected in the community wastewater. The local utility then must attempt to define potential human health effects from compounds at concentrations several orders of magnitude lower than currently established maximum contaminant levels in the community potable water. This paper examines public perception, as well as the "system" that evaluates risk and establishes maximum contaminant levels and a candidate contaminant list for potable water, but does not address potential health impacts from chronic exposure to low level contaminants. Finally, suggestions are offered to provide education for utility staff faced with providing answers to the public. Includes 21 references, tables.