坎农海滩市是俄勒冈州北部海岸的一个小社区（人口1270）。其主要的泉水水源必须在夏季补充地表水。该未经过滤的地表水水源不符合俄勒冈州实施的地表水处理规则（SWTR），因此需要一个过滤系统。社区关注的是，处理技术简单但有效，很少或根本不使用化学品。考虑到地表水水源的高质量，该市的工程师KCM，Inc.建议采用慢速砂滤，因为其操作简单。根据俄勒冈州卫生部门的指导方针，该市和KCM进行了一年的试点项目，随后设计和建造了一座能够处理1 mgd的慢速砂滤厂，并具有灵活性，以满足该市未来的需求。

The City of Cannon Beach is a small community (population 1,270) on the north Oregon Coast. Its primary spring water source must be supplemented during the summer with a surface water supply. This unfiltered surface water source was not in compliance with the State of Oregon's implementation of the Surface Water Treatment Rule (SWTR), so a filtering system was required. The community was concerned that treatment technology be simple but effective, with minimal or no use of chemicals. Given the high quality of the surface water source, the city's engineer, KCM, Inc., recommended slow sand filtration for its simplicity of operation. Following Oregon State Health Division guidelines, the city and KCM conducted a one-year pilot program, followed by design and construction of a slow sand filtration plant capable of treating 1 mgd and with the flexibility to meet the city's future needs.