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.
Municipal Water Treatment Systems and ProductsDrinking Water Treatment Chemical Certification
Certify your drinking water treatment chemicals to meet regulatory requirements around the world.
Drinking Water Treatment Chemicals CertificationReady 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
iNADO Partners with NSF to Support Members and Athletes
May 27, 2026iNADO is pleased to welcome NSF’s expertise and experience in support of its members and the athletes they serve
NSF Ends UK’s Three-Year Testing Gap with REG 31 Testing Designation
May 20, 2026NSF’s Oakdale laboratory becomes the UK’s sole facility offering comprehensive BS 6920 and REG 31 testing, closing a critical drinking water safety gap.
Tangent® Materials Announces Industry First: Tangent PolySheet™ CB Earns Certification to NSF 537, Becoming the First PFAS-Free NSF Standard 51 Food Equipment Material
May 20, 2026New food-grade synthetic cutting-board sheet, engineered from the ground up without per- and polyfluoroalkyl substances (PFAS), establishes a new materialsafety benchmark for food-contact and food-equipment applications.
NSF Annual Review and Impact Report 2025 Now Live
April 20, 2026NSF has published its Annual Review and Impact Report 2025, detailing the organization’s progress over the past year and outlining strategic priorities for 2026.