Product Certification


A mark consumers can trust

WQA’s Gold Seal is the oldest third-party testing and certification program in the water treatment industry. The easily recognized Gold Seal mark lets consumers know right up front that products have been tested to recognized industry standards.

Manufacturers and suppliers can seek Gold Seal certification for most products that contact household water. Certification covers everything from chemicals to plumbing components to filtration systems and water softeners.

Understanding Industry Certifications

Third-party verified

Product certification indicates a third-party organization has monitored the manufacturer’s operations to ensure they meet guidelines for manufacturing processes and materials used. Products are tested to ensure compliance with industry standards, performance and certification requirements.

Rigorous standards

Standards are detailed and rigorous and specific to the products certified. Standards cover many different water treatment technologies; some standards cover UV disinfection while other ensure that reverse osmosis systems perform as claimed. Certification also helps verify that manufacturers have good customer service measures in place and offer adequate product literature or information as well.

Annual inspections and retesting

Once companies go through this demanding process, they must retest their certified products regularly and submit to annual facility inspections to ensure that the products continue to meet or exceed industry standards

Benefits of Product Certification 

Peace of Mind – WQA Certification provides end users, retailers and regulators the benefit of knowing that an accredited third party has evaluated not only a product’s capability of passing rigorous testing according to industry standards, but that the process in which certified products are made is reproducible.

Multi-faceted Certification – Not only are the products tested extensively to evaluate things such as the structural integrity, the product’s ability to reduce contaminants and the safety of the materials that come into contact with water, but the literature is also reviewed to ensure that it meets a specific set of requirements as well.

Buying Power – A certified product bears a distinguished Mark indicating that the product has undergone evaluation and testing to verify that the product will perform as the certified claims indicate. The Gold Seal and Sustainability Mark provide consumers a very simple way to recognize products that will perform the way the packaging indicates they will.

Consumer Protection –Certified products allow for consumers to target the specific contaminant issues with confidence.

Regulatory Requirements – Some states or local cities have specific regulations that require certification for the ability to sell legally in that jurisdiction.

Monitoring Consistency – WQA’s programs conduct annual inspections to verify that the products being manufactured are not only being consistently made, but are made in the same way as the product was built when it underwent testing and evaluation.

NSF/ANSI Standards

Many U.S. and Canadian codes and regulations require products to meet NSF standards or, more accurately, the ANSI-accredited and public domain NSF/ANSI standards. People are often confused into thinking that products then must have “NSF certification.” This is not correct. It is important to understand the distinction between standards and certification.

The Water Quality Association (WQA), like other testing and certification agencies, is fully accredited by ANSI and SCC. The WQA Gold Seal Program tests and certifies drinking water treatment units, drinking water system components and other products to NSF/ANSI standards.

Product Certification is Global

Meet WQA’s Julia Zhu in China:

Types of Certifications

Gold Seal Product Certification

The Gold Seal provides independent verification that products such as drinking water treatment units, drinking water system components, chemicals, and water softeners have been proven effective at reducing certain contaminants.

Sustainability Certification

The WQA Sustainability Certification Program provides third-party verification that a product is environmentally responsible in all phases of its life cycle: from raw materials, production, distribution, use-phase, all the way through to end-of-life disposal.

For information on the Gold Seal and Sustainability program’s financial support and certification fees, please email

Take the Lead with WQA’s Product Certification

Become a market leader with WQA’s Gold Seal and Sustainability product certification programs. Reach out to an account representative today!

Product Certification Information in French is available below.