NSF/ANSI 419 – Public Drinking Water Equipment Performance

Demonstrate the effectiveness, reliability and safety of your public drinking water treatment technology through independent evaluation against NSF/ANSI 419. This standard provides a recognized framework for assessing treatment performance, including validation of Cryptosporidium reduction and other performance claims for public drinking water equipment.

Why NSF/ANSI 419 certification matters

Following the conclusion of the U.S. EPA Environmental Technology Verification (ETV) program, NSF/ANSI 419 was established as the American National Standard for evaluating the performance of public drinking water equipment.

A key component of the standard is its alignment with the EPA's Long Term 2 Enhanced Surface Water Treatment Rule (LT2ESWTR) performance requirements. The rule was developed to address public health risks associated with Cryptosporidium in drinking water supplies. NSF/ANSI 419 enables manufacturers to independently verify pathogen reduction claims using accepted test methodologies and surrogates that are appropriate for the technology being evaluated

Key benefits

• Demonstrate verified performance for public drinking water applications
• Support compliance strategies associated with EPA LT2ESWTR treatment objectives
• Verify Cryptosporidium reduction performance using recognized challenge testing protocols
• Establish credibility with utilities, regulators and end users
• Showcase commitment to safety, quality and regulatory readiness

Certification scope

Our NSF/ANSI 419 certification services are designed for manufacturers of public drinking water treatment equipment seeking third-party validation.

Performance verification

• Evaluation against NSF/ANSI 419 requirements
• Verification of Cryptosporidium reduction performance
• Testing protocols consistent with LT2ESWTR microbial challenge testing requirements
• Assessment using technology-appropriate testing methodologies and surrogates

Safety evaluation

• Material safety review aligned with NSF/ANSI/CAN 61: Drinking Water System Components – Health Effects
• Independent assessment of product safety characteristics

Optional advanced validation

• Microfiltration module evaluation for virus reduction claims
• Ultrafiltration module evaluation for virus reduction claims

Who should apply?

• Membrane filtration technology manufacturers
• Public drinking water equipment suppliers
• Water treatment solution providers
• Organizations seeking validated performance claims for municipal and public water applications

Why choose NSF?

• Independent third-party evaluation
• LT2ESWTR-aligned performance verification
• Expertise in drinking water treatment technologies
• NSF/ANSI/CAN 61 and NSF/ANSI 419 evaluation capabilities
• Trusted validation for market confidence

Ready to start certification?

Advance your market credibility with NSF/ANSI 419 certification services.

Explore your next step by using the Contact Us form below or download our brochure.