Seven Steps to Certification: Drinking Water Systems, Components and Chemicals
April 8, 2022
At NSF, we’ve been testing and certifying products for over 70 years. In that time, we have streamlined the process to make it less complicated.

We know time to market is important, and so is visibility into the certification process. That’s why we’ve broken it up into seven steps:
- 1
Application
Your company submits an application. - 2
Submission
You provide product formulation, toxicology and product use information. - 3
Review
Our technical team reviews formulations and/or parts lists. - 4
On-Site Audit
We perform an on-site audit of the production facility and collect/request samples. - 5
Testing
Our laboratory conducts testing on the product. - 6
Technical Evaluation
We complete a final technical evaluation. - 7
Certification
NSF certification is granted (and maintained annually).
Certification for Municipal Water Products
Certify your products, components and materials used in the municipal water industry to meet health and safety requirements.
Drinking Water Treatment Chemical Certification
Certify your drinking water treatment chemicals to meet regulatory requirements around the world.
Ready To Begin the Process?
Contact us with questions or to receive a quote.
How NSF Can Help You
Get in touch to find out how we can help you and your business thrive.

What’s New with NSF

NSF Achieves European Accreditation for Drinking Water Product Certification Ahead of 2027 EU Deadline
July 22, 2026The ISO/IEC 17065 accreditation from BELAC complements NSF’s testing capacity, enabling end-to-end support for EU Drinking Water Directive (DWD) readiness ahead of the January 2027 deadline.
NSF Awards World-First Community Catch Certification to Orkney Crab Fishery
July 13, 2026Milestone certification sets a new benchmark for small-scale fishery sustainability and social responsibility.
NSF Issues First-Ever MSC Certification for an Eel Fishery to Perupez S.A.C. and Sakana del Peru
June 19, 2026Third-party certification plays a key role in independently verifying the sustainability of seafood operations.

