本文讨论了临时强化地表水处理规则（IESWTR），其目的是改善饮用水中微生物病原体（包括隐孢子虫）的控制，并确保水系统符合第一阶段消毒剂/消毒副产品（D/DBP）规则时的微生物质量。主题包括:强化治疗技术要求；加强绩效标准；为单个过滤器设定的监控要求；消毒分析和基准要求；地下水的定义在地表水的直接影响下进行了修改；避免过滤的标准已修改；保留公告语言； 要求进行卫生调查；各州保留关键记录；以及IESWTR成本影响。

This article discusses the Interim Enhanced Surface Water Treatment Rule (IESWTR), whose purpose is to improve the control of microbial pathogens, including Cryptosporidium, in drinking water and to ensure microbiological quality as water systems comply with the Stage 1 Disinfectant/Disinfection Byproducts (D/DBP) Rule. Topics covered include: treatment technique requirement strengthened; tubidity performance standards tightened; monitoring requirements set for individual filters; disinfection profiling and benchmarking requirements; definition of groundwater under the direct influence of surface water modified; criteria for avoiding filtration modified; public notification language retained; sanitary surveys required; states retain key records; and IESWTR cost impact.