Materials and Ingredients
Verify the compliance of materials and ingredients with both North American and international standards.
NSF's independent on-site laboratories worldwide rigorously test and certify materials and ingredients utilized in drinking water products and systems. This ensures both optimal performance and safeguards against potential health effects.
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Use of NSF consulting services or attending NSF training sessions does not provide an advantage, nor is it linked in any way to the granting of certification.
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What’s New with NSF
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.
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.