Water Filtration Media

December 27, 2025

Independent certification of water filtration media is an important step in meeting public health regulatory requirements in most applications.

Independent certification of water filtration media is an important step in meeting public health regulatory requirements in most applications. NSF tests and certifies a variety of filtration media products, including filtration media used in municipal water filtration, drinking water treatment units and pool equipment.

Municipal Drinking Water

Filtration Media for Public Drinking Water/Municipal Water Filtration Treatment.

Residential Drinking Water

Filtration Media for Drinking Water Treatment Units.

Recreational Water

Filtration Media for Recreational Water Applications.

Discover NSF’s filtration media standards, including scopes and product types we can test and certify. Click here to learn more.

How NSF Can Help You

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Water Filtration Media

Municipal Drinking Water

Residential Drinking Water

Recreational Water

How NSF Can Help You

What’s New with NSF

iNADO Partners with NSF to Support Members and Athletes

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

Tangent® Materials Announces Industry First: Tangent PolySheet™ CB Earns Certification to NSF 537, Becoming the First PFAS-Free NSF Standard 51 Food Equipment Material

NSF Annual Review and Impact Report 2025 Now Live