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 Welcomes Hanjun Kwon, Managing Director, APAC
September 14, 2026Experienced business leader to drive sustainable growth, organizational development and operational excellence across the Asia-Pacific region.
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September 11, 2026NSF is proud to be part of PACK EXPO International 2026, the premier event bringing together packaging and processing leaders from across industries.
Information Systems Security Association (ISSA) Welcomes NSF’s Brian Schultz into the 2026 Hall of Fame
September 10, 2026Lifetime achievement recognition honors exceptional leadership and lasting contributions to the cybersecurity profession.
NSF Welcomes Nicole Parent Haughey to Board of Directors
September 10, 2026NSF's appointment of Nicole supports the organization's continued focus on long-term growth and transformation.

