2008年7月30日，美国环境保护局（USEPA）最终确定了第二份污染物候选名单（CCL2）中11种污染物的监管决定。考虑到现有的最佳数据， 美国环保局得出结论，这些污染物 不经常发生在 公共用水中的公共卫生问题 系统。因此，该机构做出了决定 决定不监管任何这些 污染物，因为设定了国家初选 饮用水监管 并不是一个有意义的机会 在全国范围内降低健康风险。 因此，11种污染物中没有一种 将由美国环保局监管；然而，一些 水系统可能容易受到污染。 本文总结了最终的CCL2 测定（美国环保局2008a； 2008年b）。本文讨论了CCL要求的具体内容，重点是《安全饮用水法》（SDWA）和无监管污染物监测，以及特定的CCL2候选物，包括硼、达克塔尔单酸和二酸降解物、DDE、1,3-二氯丙烯、DNT、EPTC、Fonofos、特杆菌和1,1,2,2-四氯乙烷。包括2个参考文献。

On July 30, 2008, the U.S. Environmental Protection Agency (USEPA) finalized the regulatory determinations for 11 contaminants on the Second Contaminant Candidate List (CCL2). Considering the best available data, USEPA concluded that these contaminants occur infrequently at levels of public health concern in public water systems. Therefore, the agency made a determination not to regulate any of these contaminants, because setting a national primary drinking water regulation does not present a meaningful opportunity for health risk reduction on a national basis. Consequently, none of the 11 contaminants will be regulated by USEPA; however, some water systems may be vulnerable to contamination. This article summarizes the final CCL2 determinations (USEPA 2008a; 2008b). The article discusses specifics of the CCL requirements, focusing on the Safe Drinking Water Act (SDWA) and unregulated contaminant monitoring, along with specific CCL2 candidate, including boron, dacthal mono- and di-acid degradates, DDE, 1,3-dichloropropene, DNT, EPTC, Fonofos, Terbacil, and 1,1,2,2-tetrachloroethane. Includes 2 references.