Ozone and UV Systems
Testing and certification for UV and ozone water treatment systems.
Do you need testing or certification for your UV or ozone system? NSF provides both services for drinking water, municipal water, recreational water, and wastewater applications.
Why choose NSF?
NSF works with public health officials, manufacturers and facility operators to evaluate products and protect human health. We develop and apply rigorous standards for ozone and ultraviolet (UV) systems across a wide range of water treatment applications.
Standards we certify to
Drinking Water:
- NSF/ANSI/CAN 60 – Drinking Water Treatment Chemicals: Health Effects.
- NSF/ANSI/CAN 61 – Drinking Water System Components: Health Effects.
- NSF/ANSI 55 – Ultraviolet Microbiological Water Treatment Systems.
Municipal Water Treatment Performance:
Public Drinking Water Equipment Performance Certification Program (PDWEP).
Recreational Water:
NSF/ANSI 50 – Equipment for Swimming Pools, Spas, Hot Tubs, and Other Recreational Water Facilities.
Wastewater:
NSF/ANSI 46 and NSF/ANSI 385 – Evaluation of Components and Devices Used in Wastewater Treatment Systems.
Partner with NSF for trusted testing and certification that ensures your UV and ozone systems meet the highest standards for safety and performance.
Ready to Get Certified by NSF?
Start your certification journey today.
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 Expands Food Equipment Portfolio with Electrical Safety Testing and Certification
April 30, 2026Manufacturers now have a “one-stop-shop” for both sanitation and electrical safety certification, enabling market expansion and regulatory compliance.