1992年，实习学生评估了威斯康星州3650个社区和非临时饮用水井对农药和挥发性有机化学品污染的脆弱性。本文描述了标准的制定、评估过程，以及在脆弱性评估项目期间发布的豁免数量。威斯康星州自然资源部第一个三年监测期的开发和实施成本为40万美元。监控豁免将为水系统节省约1800万美元的初始监控成本，并将资源用于问题现场。迄今为止的样本结果表明，最脆弱的油井中只有不到5%受到污染。 包括2个参考文献、表格和图表。

In 1992, student interns assessed the vulnerability of Wisconsin's 3,650 community and nontransient drinking water wells to contamination from pesticides and volatile organic chemicals. This article describes the development of criteria, the assessment process, and the number of waivers issued during the vulnerability assessment program. Cost to the Wisconsin Department of Natural Resources of development and implementation for the first three-year monitoring period was $400,000. Monitoring waivers will save water systems about $18 million in initial monitoring costs and target resources to problem sites. Sample results to date indicate that fewer than 5 percent of the most vulnerable wells are contaminated. Includes 2 references, tables, figures.