Water Treatment Products Testing and Certification Services

Certification of water treatment products helps end users attain a cleaner, safer water supply.

NSF International offers testing and certification services for many water treatment products, including filtration media, equipment and chemicals. Provide proof that your products comply with the highest international standards.

Our Services

Water Treatment and Filtration Systems

Test or certify your water treatment and filtration systems, whether they are designed for municipal, point-of-use or point-of-entry applications.

Filtration Media Certification

Test or certify your water filtration media to meet public health and regulatory requirements.

Drinking Water Treatment Chemicals Certification

Certify your drinking water treatment chemicals to meet regulatory requirements around the world.

Regional Certification and Approvals

NSF helps manufacturers of water treatment, distribution, plumbing and residential water filtration products gain access to global markets.

Resources

Six Reasons End Users Look for Certified Chemicals

Discover the six top reasons water utilities, food processors and other end users of water treatment chemicals seek certified products.

Prioritizing Children’s Health: Revisions to EPA Rules and NSF Standards Help Reduce Lead in Drinking Water

New EPA rules for lead and copper and NSF’s standard revisions help eliminate unsafe levels of lead in drinking water to better protect children’s health.

New Categories of Water Treatment Chemicals Added to NSF/ANSI/CAN 60

Updates to NSF/ANSI/CAN 60 now allow testing and certification for acetic acid, citric acid, BCDMH and chlorine dioxide used in municipal drinking water treatment.

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News and Events

Plumbing Standard Revisions Tighten Lead Leaching Criteria in Drinking Water

September 22, 2020

Joint committee governing NSF/ANSI/CAN 61 lowers maximum allowable limits of leached lead from plumbing endpoint devices

Drinking Water Treatment Units Must Now Meet Stricter Requirements for Lead Reduction Certification

February 6, 2020

Joint committee governing NSF/ANSI 53 and NSF/ANSI 58 lowers the maximum allowable lead in filtered water from 10 ppb to 5 ppb

Major Revision to Drinking Water Treatment Standard Allows UV-LED Technology to Treat Microorganisms

November 14, 2019

NSF International publishes new criteria for UV technology and test methods as part of NSF/ANSI 55: the American National Standard for ultraviolet microbiological water treatment systems

Concerned About Lead in Your Drinking Water? Choose a Filter Certified to Reduce Lead

November 7, 2019

NSF International urges the use of drinking water treatment and filtration devices that are independently tested and certified to reduce lead

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