From the integrity of plumbing systems to the quality of drinking water, we provide the accredited expertise and services necessary to meet regulatory requirements. Applicable Plumbing Standards UL Supports UL test labs are prepared to test your plumbing fixtures and fittings and water treatment chemical products to nationally recognized standards including NSF, ANSI, CSA, ASME, ASTM, ASSE, AWWA, IAPMO and more.  Click here to see many of the standards we can support.

The benefits of working with UL Our global network of laboratories provide complete performance and regulatory compliance testing and certification services for plumbing products and components including pipes, fixtures, fittings and drains, etc. for use in residences, commercial buildings, municipal infrastructure, etc.  Additionally we have services to evaluate water treatment chemicals. Backed by over a century of safety science leadership, the UL Mark for water quality and plumbing performance demonstrate product compliance to key standards and requirements for public health officials, municipalities, authorities having jurisdiction, and purchasers of water systems products, components and water treatment chemicals.

Our plumbing products team is comprised of toxicologists, engineers and chemists specializing in water product certification. Team members have a deep understanding of the plumbing codes and regulatory requirements.  UL staff actively participate in standard and code development committees and industry technical task groups to keep abreast of emerging industry and compliance issues. Our experts support our customers through the entire certification process to help achieve the most aggressive time-to-market plans.

Our facilities are fully accredited in the United States and Canada by the American National Standards Institute (ANSI) and the Standards Council of Canada (SCC). UL Marks are recognized and accepted throughout the United States and Canada.


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Browse pertinent UL thought leadership to help you find the research and insights that matter for your business.

Rainwater Catchment Systems
Rainwater Catchment Systems
An Overview of Regulations for Lead Levels in Drinking Water System Components
An Overview of Regulations for...
Surveillance Requirements for Third-Party Certifiers of Drinking Water Treatment Chemicals
Surveillance Requirements for ...