信息收集规则（ICR）要求大型供水系统从1997年7月到1998年12月每月对水源水中的贾第虫囊肿和隐孢子虫卵囊进行监测。由于这些污染物不存在实验室认证计划，美国环境保护局（USEPA）制定了实验室批准计划，其中包括人员和设备要求、现场评估和性能评估（PE）样品。一旦实验室获得批准，分析员需要在ICR期间每月分析PE样本。该实验室批准计划在监测结束时结束；然而，实验室和公用事业公司仍然希望获得原生动物体育项目。 本文讨论了目前贾第虫和隐孢子虫自愿实验室程序的继续运行。包括4个参考文献、表格和图表。

The Information Collection Rule (ICR) required large water systems to monitormonthly from July 1997 until December 1998 for Giardia cysts and Cryptosporidiumoocysts in source water. Because no laboratory certification program existed forthese contaminants, the US Environmental Protection Agency (USEPA) developed a laboratoryapproval program which included personnel and equipment requirements, on-siteevaluations, and performance evaluation (PE) samples. Once a laboratory wasapproved, analysts were required to analyze monthly PE samples for the durationof the ICR. This laboratory approval program ended with the end of monitoring;however, laboratories and utilities still wanted access to a protozoa PE program.This paper discusses the continued operation of the now voluntary laboratory PEprogram for Giardia and Cryptosporidium. Includes 4 references, tables, figures.