美国环境保护局（USEPA）最近对实施安全倡议以及最终确定和实施修订后的砷标准的关注，推迟了其他几项《安全饮用水法》（SDWA）规则制定的进展。本文回顾了已经提出或即将提出的主要规则和行动。其中最主要的是关于以下规则制定和相关行动的提案和初步决定，它们被视为优先规则制定，因为它们有法定期限:阶段2 D/DBPR和LT2ESWTR；地下水规则；CCL监管决定；对现行法规进行六年审查； 氡定律；还有，MTBE。

The US Environmental Protection Agency's (USEPA's) recent attention on implementing security initiatives and finalizing and implementing the revised arsenic standard has delayed progress on several other Safe Drinking Water Act (SDWA) rulemakings. This article reviews major rules and actions that have been proposed or will soon be proposed. Chief among them are proposals and preliminary determinations for the following rulemakings and related actions, which are considered priority rulemakings because they have statutory deadlines: Stage 2 D/DBPR and LT2ESWTR; Ground Water Rule; CCL regulatory determinations; six-year review of current regulations; radon rule; and, MTBE.