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.

French ACS Approval for Drinking Water Products
Do you need to get your drinking water products ACS-approved for the French market? Here we explain the basic ACS requirements and why NSF is your best partner for this service.
Joining and Sealing Materials and Components
Test and certify joining and sealing products for use in plastic piping systems for potable and non-potable water.
Plastic Materials and Ingredients
Test and certify plastic plumbing materials at NSF’s independent, on-site labs to meet North American and international requirements.
NSF REG4 Certification
Demonstrate plumbing product and material compliance with the UK’s Water Supply (Water Fittings) regulations and byelaws through a fast, efficient, robust process.
Testing for BS 6920
Test your products for a quicker path to BS 6920 compliance.
WRAS Approval Services
If you need WRAS Approval for your water fitting products sold in the UK market, NSF offers full product testing and we submit your reports to WRAS.
Brazil Certifications and Approvals
Ensure your water treatment product meets the sanitation and health effects requirements for selling in Brazil.
Gasket and Gasket Material Certification
Certify gaskets and gasket materials to NSF/ANSI/CAN 61 for greater market access. Gasket cutters can streamline certification and save money.
NSF/ANSI/CAN 61 Testing and Certification
This standard sets benchmarks for evaluating water distribution products and materials. Learn about why it's required and accepted around the world.
NSF Guideline 533: Certification for Ingredients Used in Drinking Water Products
NSF Guideline 533 certification helps ingredient suppliers verify the safety of ingredients used in drinking water products, gain visibility with manufacturers worldwide, and simplify approvals for downstream products.
Regional Certification and Approvals
NSF helps manufacturers of water treatment, distribution, plumbing and residential water filtration products gain access to global markets.

What’s New with NSF

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.
Read the Story

Materials and Ingredients

Explore Our Services

French ACS Approval for Drinking Water Products

Joining and Sealing Materials and Components

Plastic Materials and Ingredients

NSF REG4 Certification

Testing for BS 6920

WRAS Approval Services

Brazil Certifications and Approvals

Gasket and Gasket Material Certification

NSF/ANSI/CAN 61 Testing and Certification

NSF Guideline 533: Certification for Ingredients Used in Drinking Water Products

Regional Certification and Approvals

What’s New with NSF

NSF Ends UK’s Three-Year Testing Gap with REG 31 Testing Designation