NSF Certifications & Performance Analysis – Gravity Filters

This page centralizes the NSF certification documents and performance analysis tables for gravity filters available on our store. It allows you to quickly consult the certificates, test reports and laboratory results associated with the different filtration technologies.

Official NSF certifications

NSF certifications attest that a product has been tested and certified according to recognized standards of quality, safety and performance for drinking water.

NSF/ANSI 42

Monderma – Filter Imperial

Official NSF/ANSI 42 certification for the reduction of substances affecting the aesthetics of water: chlorine, taste, odor and particles.

Download the certificate
NSF/ANSI 372

Monderma – Imperial Filter

Official NSF/ANSI 372 certification relative lead-free compliance of components in contact with drinking water.

Download the certificate
NSF/ANSI 42

Monderma – Black Filters

Official NSF/ANSI 42 certification for Monderma black filters intended for gravity filtration systems.

Download the certificate
NSF/ANSI 42

Monderma – Gravity stainless steel system

Official NSF/ANSI 42 certification for the Monderma gravity stainless steel system.

Download the certificate
NSF/ANSI 42

Berkey / New Millennium Concepts

Official NSF/ANSI 42 certification available on the NSF.org website for Berkey systems.

Consult on NSF.org
NSF/ANSI 372

Berkey / New Millennium Concepts

Official NSF/ANSI 372 certification relating to the lead-free compliance of Berkey systems.

Consult on NSF.org

Performance analysis tables

These documents present test results carried out by independent laboratories, including Envirotek USA, on different families of contaminants: heavy metals, VOCs, pesticides, herbicides, PFAS, pharmaceutical residues and other substances.

More than 200 contaminants

Monderma Imperial GF & AMB

Performance analyzes carried out by Envirotek USA on Imperial GF and Imperial AMB filters.

Download the table
Envirotek

Coldstream FTO+

Filtration test results for the Coldstream FTO+ filter.

Download table
Performance

Coldstream CTO+ Max

Filtration test results for Coldstream CTO+ Max filter.

Download table
Performance

Black Berkey

Filtration test results for Black Berkey filter elements.

Download table
Performance

EVA Filtration

Filtration test results for EVA Filtration filters.

Download table

Berkey Phoenix – New Millennium Edition

The documents below consolidate published independent test results for Berkey Phoenix New Millennium filters Edition.

CVR Lab – Oct. 2025

Chemicals, VOCs, Pesticides & Metals

Independent testing of chemicals, volatile organic compounds, pesticides and metals.

Download report
RAYNU Lab – Oct. 2025

Heavy metals, PFAS & radiological

Testing for heavy metals, VOCs, disinfection byproducts, PFAS, radiological and petroleum contaminants.

Download report
RAYNU Lab – Oct. 2025

Pesticides, herbicides, SVOCs & pharmaceuticals

Testing on pesticides, herbicides, semi-volatile organic compounds, PAHs, PCBs and pharmaceutical residues.

Download report
RAYNU Lab – Nov. 2025

PFAS, PFOA & PFOS – 1500 L Test

1500 liter duration test measuring reduction of PFAS, including PFOA and PFOS.

Download report
Atom Testing Lab – Apr. 2026

Heavy metals & inorganic contaminants

Testing for heavy metals, disinfectants and non-metallic inorganic contaminants.

Download report

About the NSF standards

  • NSF/ANSI 42 : Standard for reduction of substances affecting the aesthetics of water, such as chlorine, taste, odor and certain particles.
  • NSF/ANSI 53 : standard relating to the reduction of certain contaminants which may present a risk to health, according to the certified claims.
  • NSF/ANSI 372 : standard relating to the lead-free compliance of components in contact with drinking water.

NSF certifications are issued by NSF International, an independent American organization specializing in health safety standards, particularly for equipment in contact with drinking water.