本文讨论了无管制污染物监测规则（UCMR）， 根据1996年《安全饮用水法修正案》的规定，这是一个动态过程 由越来越多的规则制定组成的项目 取代1988年首次制定的评估不受管制污染物发生情况的要求。UCMR的当前格式只是规则制定过程的第一个版本，每五年将与定期更新的污染物候选名单（CCL）和美国环境保护局（USEPA）的定期监管决定同步重复一次。本文区分了整个UCMR项目和1月开始的项目的第一个五年周期。 2001年1月1日，一直持续到2005年底，缩写为UCMR1。美国环保局计划在2006年1月1日的开始日期前提出并最终确定UCMR2要求。给出了互联网资源清单，以及UCMR1五年周期的水系统监测时间表、污染物评估监测、污染物筛查调查、污染物预筛选测试、化学品监测频率，以及美国环保局UCMR活动的区域联系人。包括桌子。

This article discusses the Unregulated Contaminant Monitoring Rule (UCMR), mandated by the 1996 Safe Drinking Water Act amendments, which is a dynamic program comprising a growing collection of rulemakings that have arisen to replace requirements first established in 1988 for assessing the occurrence of unregulated contaminants. The current format of the UCMR is just the first version of a rulemaking process that will repeat every five years in step with regularly updated Contaminant Candidate Lists (CCLs) and periodic regulatory determinations by the US Environmental Protection Agency (USEPA). This article distinguishes between the overall UCMR program and the first five-year cycle of the program that started Jan.1, 2001, and runs through the end of 2005, which in abbreviated form is UCMR1. USEPA plans to propose and finalize UCMR2 requirements in time for their start date of Jan. 1, 2006. A list of internet resources is given, along with water system monitoring schedules for the UCMR1 five-year cycle, assessment monitoring contaminants, screening survey contaminants, prescreen testing contaminants, monitoring frequency for chemicals, and USEPA regional contacts for UCMR activities. Includes tables.