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White Paper: Data Integrity and Warning Letters

In this document, you will find information on key findings from data integrity-related warning letters from 2005 through 2019.

How NSF Can Help You

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What’s New with NSF

  • NSF Achieves European Accreditation for Drinking Water Product Certification Ahead of 2027 EU Deadline

    July 22, 2026
    The 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.
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  • NSF Awards World-First Community Catch Certification to Orkney Crab Fishery

    July 13, 2026
    Milestone certification sets a new benchmark for small-scale fishery sustainability and social responsibility.
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  • NSF Issues First-Ever MSC Certification for an Eel Fishery to Perupez S.A.C. and Sakana del Peru

    June 19, 2026
    Third-party certification plays a key role in independently verifying the sustainability of seafood operations.
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  • NSF Ends UK’s Three-Year Testing Gap with REG 31 Testing Designation

    May 20, 2026
    NSF’s Oakdale laboratory becomes the UK’s sole facility offering comprehensive BS 6920 and REG 31 testing, closing a critical drinking water safety gap.
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