本认证指南包含有关流程、常见问题、标准要求、列表选项、词汇表的章节，甚至包括如何与供应商合作的信息。认证公司和非认证公司都会发现该指南是一个有用的资源。熟悉该流程的NSF认证公司可以将其作为培训和参考工具，供组织中可能不太熟悉该流程的人使用。这些客户还可能会发现一些他们不知道的小道消息。未经认证的公司将发现，在开始该流程之前，了解他们的许多选择非常有用，从而确保他们了解co- 获得认证后的市场潜力。美国国家科学基金会饮用水处理单元认证计划最早建立于20世纪70年代初。

This certification guide contains sections on the process flow, frequently asked questions, standards requirements, listing options, a glossary and even a section that includes information on how to work with your suppliers. Both certified and non-certified companies will find the guide to be a useful resource. NSF Certified companies familiar with the process can use this as a training and reference tool for those in the organization who may not be as familiar with the process. These clients may also find tidbits of information they were not aware of.Non-certified companies will find it very useful in understanding their many options before beginning the process, ensuring that they understand the co-marketing potential after gaining certification. The NSF Drinking Water Treatment Unit Certification Program was first established in the early 1970s.