Lead Content Compliance


As of January 4, 2014, the Safe Drinking Water Act (SDWA)  requires drinking water products sold or installed for use in public water systems, as well as plumbing in facilities, to meet a weighted average of not more than 0.25 percent lead. Third-party certification of these products to the new lead-free requirements will be required in many jurisdictions. Additionally, the states of California, Vermont, Maryland and Louisiana have already instituted these requirements for products currently in the market.

To identify NSF certified products that comply with low-lead requirements, reference our low-lead marks guide.

Benefits of Certification

Third-party certification of lead content is required by many jurisdictions and in many specifications. NSF certification ensures your product meets these mandatory requirements as determined by the Safe Drinking Water Act for plumbing fixtures and fittings across North America. Additionally, we can use your test data to certify your product to other industry standards, such as ASME, ASSE, AWWA, CSA, IAPMO, ISO, UL and more.

Why Work With NSF?

The NSF mark, well respected by public health officials and drinking water utilities, is recognized as a symbol of product quality and integrity. Our responsive, personalized service quickly guides your products through the certification process, ensuring that they get to market on time and on budget. We offer product bracketing services wherever possible to help keep costs down, and provide pricing up front so there are no hidden surprises down the road.

NSF, a designated Nationally Recognized Testing Laboratory (NRTL) by the Occupational Safety and Health Administration, is accredited by the International Accreditation Service (IAS), Standards Council of Canada (SCC) and American National Standard Institute (ANSI).

Certification Process

While our product evaluations are thorough, our process is simple and efficient. Your NSF project manager guides your project through our streamlined, efficient certification process from application to approval.

1. Your company submits an application.
2. Your company and suppliers provide formulation, design specifications and product end use information.
3. We review formulation and engineering specifications.
4. We perform a plant audit and sample collection.
5. We conduct laboratory testing.
6. We grant certification for compliant products.
7. Our follow-up program includes unannounced inspections and annual testing.

Our experts can help you reduce your overall costs and expedite your time to market by bundling services and reducing the number of contracted service providers and facility audits.


Drinking Water System Components
(Relevant standard: NSF/ANSI/CAN 61, including Annex G)

Purpose/scope: Drinking water components are tested to NSF/ANSI/CAN 61, which includes a leachate test to evaluate products for all contaminants of health effects concern, not just lead. NSF/ANSI/CAN 61 also certifies lead content via Annex G and NSF/ANSI 372.

Search for NSF Certified Drinking Water System Components

Search tips: When searching for products certified as low-lead, select the box “Only display products also Certified to NSF/ANSI/CAN 61, Annex G (weighted lead content of <=0.25%).”

To identify NSF certified products that comply with low-lead requirements, reference our low-lead marks guide.

Additional information: NSF Municipal Water Treatment Products Program

NSF/ANSI 14 and 24

Plumbing System Components 
(Relevant standards: NSF/ANSI 14 and 24, ASTM, ASME, CSA, IAPMO, ASSE and AWWA)

Purpose/scope: NSF/ANSI 14 covers potable and non-potable water products. Potable water products are evaluated to the requirements of NSF/ANSI/CAN 61. Products are also tested to verify compliance with the performance standard. All potable water products certified by NSF under this program are lead-free[1].

Search for NSF Certified Plumbing and Related Products

Search Tips: Select the box “Only display products also Certified to NSF/ANSI/CAN 61, Annex G (weighted lead content of <=0.25%).”

Associated marks for lead content certified products: The –G mark is optional for certified potable water products that are made of all plastic.

Lead Content Compliance

Additional information: NSF Plumbing Fixtures and Fittings Program

[1]The term lead-free is defined as having a weighted average lead content of the wetted surfaces not exceeding 0.25 percent consistent with state and federal law.

NSF/ANSI 42, 53, 55, 58 and 62

Drinking Water Treatment Units
(Relevant standards: NSF/ANSI 42, 44, 53, 55, 58 and 62)

Purpose/scope: NSF verifies manufacturer performance claims and material safety of drinking water treatment units (DWTUs). Products covered include: water filters, water softeners, reverse osmosis systems, distillers, UV disinfection, etc.

Search for NSF Certified Drinking Water Treatment Units, Water Filters

Search tips: Products certified for lead content are denoted in the search results. For a complete listing of all DWTU products certified for lead content, go to Lead Content Certified Products and select the box “Drinking Water Treatment Units.”

Associated marks for lead content certified products:
None. Refer to listings.

Additional information: NSF Residential Water Treatment Program


This standard establishes a standardized methodology for the determination and verification of product compliance with a maximum weighted average lead content requirement of 0.25 percent as required by the U.S. Safe Drinking Water Act. Currently eight states reported requirements for compliance with NSF/ANSI 372 and two additional states have regulations or legislation requiring certification or conformance to a 0.25 percent weighted average lead content for products conveying or dispensing drinking water.

Get more information and see a comprehensive map of the U.S. states provinces/territories requiring NSF/ANSI 372.

Lead Content Certification
(Relevant standards: NSF/ANSI 372, NSF/ANSI/CAN 61-G and all other NSF lead content certifications)

Search for All NSF Lead Content Certified Products

Search Tips: If looking for specific product types, select a box with the desired product type at the link above.

To identify NSF certified products that comply with low-lead requirements, reference our low-lead marks guide.

Additional Information: NSF 61, NSF 372 and Lead Content