公共供水系统（PWS）可将广谱测试（BST）用作收集CCR自愿和合规监测数据的有效工具。环境健康实验室于1997年底推出了其BST计划，以成本效益高的方式生成扩展的数据集，其报告限值达到或超过当前常规合规监测所需的限值。分析460多种金属、有机和无机污染物，包括大多数规定参数，只需要五种分析方法，包括GC/MS、ICP/MS、离子色谱和LC/PDA/MS技术。 其中三种方法是目前EPA批准的方法的简单扩展，另外两种方法将在拟议的精简倡议颁布时提交批准。本文的重点是:新CCR法规对PWS行业的影响；整合具有成本效益的BST计划，以帮助PWS维持当前的CCR并促进公共卫生；传统合规SDWA方法和BST之间的成本比较；以及其中一种BST方法的校准、精密度/准确度和方法检测限（MDL）等方法验证数据。

Broad Spectrum Testing (BST) can be used by a Public Water Supply (PWS) as an effective tool for collecting both voluntary and compliance monitoring data for the CCR. Environmental Health Laboratories introduced its BST program in late 1997 to produce extended data sets with reporting limits that meet or surpass those currently required for routine compliance monitoring in a cost-effective manner. Only five analytical methods encompassing the techniques of GC/MS, ICP/MS, Ion Chromatography, and LC/PDA/MS, are needed to analyze for over 460 metal, organic, and inorganic contaminants, including the majority of the regulated parameters. Three of these methods are simple extensions of current EPA approved methods, and the other two will be submitted for approval under the proposed Streamlining Initiative when it is promulgated. The paper focuses on the following: the impact of the new CCR regulation on the PWS industry; the integration of a cost-effective BST program to help a PWS maintain current CCRs and promote public health; cost comparisons between conventional compliance SDWA methodology and BST; and, method validation data such as calibration, precision/accuracy, and method detection limits (MDL) for one of the BST methods.