之前的三篇文章（分别于1990年2月、1992年3月和1993年2月发表在《华尔街日报》上）回顾了《安全饮用水法》规定的法规的历史、内容、现状和时间表。本文介绍了与这些规则相关的最新发展。包括62个参考文献和表格。

Three earlier articles (published in the Journal in February 1990, March 1992, and February 1993) reviewed the history, content, status, and schedule of regulations mandated by the Safe Drinking Water Act. Current developments related to these rules are presented in this article. Includes 62 references, tables.