Weld-On® products are trusted in plumbing, industrial, irrigation, and pool & spa systems worldwide. That trust is reinforced by globally recognized third-party certifications that validate safety, performance, environmental responsibility, and regulatory compliance. These certifications ensure our solvent cements, primers, and related products meet the standards required by code officials, engineers, distributors, and contractors across global markets.
NSF International
NSF certification, issued by NSF International, confirms that a product meets rigorous mechanical, physical, and durability requirements, as well as strict public health and safety standards. For solvent cements and primers, this confirms suitability for potable water systems and compliance with drinking water safety requirements. NSF listing provides inspectors and specifiers confidence that materials are approved for use in regulated plumbing applications.
CSA Group
CSA Group is an independent, not-for-profit standards organization that develops and maintains a wide range of standards and codes used across Canada and internationally. Formerly known as the Canadian Standards Association, CSA Group provides standards development, testing, inspection, and certification services that support product safety, regulatory compliance, and market access. In the context of solvent cements, CSA Group publishes relevant performance and safety standards—such as those for plastic pipe and fittings—that outline the requirements solvent cements must meet for use in plumbing and piping systems. Through this process, CSA Group helps ensure that solvent cements used in critical applications meet consistent quality, durability, and safety benchmarks, ultimately supporting public safety and facilitating trade.
IAPMO
The International Association of Plumbing and Mechanical Officials (IAPMO) evaluates products for compliance with plumbing and mechanical codes. An IAPMO listing confirms that a product meets applicable Uniform Plumbing Code (UPC) requirements and has been independently tested for performance and safety in plumbing systems. Products bearing the UPC mark (a widely adopted plumbing standard in the United States) have been independently evaluated for safety, performance, and code compliance, giving inspectors, engineers, and contractors confidence that the product meets established plumbing regulations. For solvent cements and related systems, UPC certification supports approval for use in code-regulated plumbing installations.
UL GREENGUARD / LEED
UL Solutions GREENGUARD Certification focuses on low chemical emissions, helping ensure products contribute to healthier indoor air
quality. This can support building projects pursuing credits under the U.S. Green Building Council’s LEED (Leadership in Energy and Environmental Design) rating system. While LEED certifies entire buildings rather than individual products, GREENGUARD certification can assist architects and builders in meeting indoor environmental quality goals.
EN / CE
EN standards are European Norms that define product performance and safety requirements across the European Union. The CE marking indicates that a product conforms to applicable EU regulations and directives, allowing it to be legally sold within the European Economic Area. For Weld-On® products, CE marking demonstrates compliance with harmonized European standards for construction materials.
WRAS
Water Regulations Advisory Scheme (WRAS) approval confirms that products comply with UK water supply regulations. This ensures materials used in contact with drinking water do not adversely affect water quality, taste, or safety, making them acceptable for use in regulated water systems throughout the United Kingdom.
Kitemark
The Kitemark is a quality certification mark issued by the British Standards Institution (BSI). It signifies that a product has been independently tested and that the manufacturer’s quality management systems are regularly audited. The Kitemark is widely recognized in the UK and internationally as a symbol of consistent product performance and manufacturing reliability.
Regional Chemical Restrictions
Regional chemical regulations govern the use of specific substances in manufacturing and distribution, including solvent cement formulations. These may include EU REACH requirements, U.S. state-level VOC limits such as California’s South Coast Air Quality Management District (SCAQMD) Rule 1168, and other local environmental controls. Compliance ensures Weld-On® products meet applicable environmental and occupational safety standards wherever they are sold.
WaterMark (Australia)
The WaterMark Certification Scheme is administered by the Australian Building Codes Board and is a mandatory certification program for certain plumbing and drainage products installed in Australia. Products carrying the WaterMark demonstrate compliance with applicable Australian standards and are authorized for installation across all states and territories when properly installed. The mark must be applied directly to the certified product and include the applicable standard and license number, ensuring traceability and regulatory acceptance. Recently earning WaterMark certification reinforces Weld-On®’s
commitment to meeting regional regulatory requirements and supporting partners in the Australian market.
About Weld-On
Weld-On Adhesives, Inc., a subsidiary of IPS Corporation, is the pioneer and leading manufacturer of Weld-On® solvent cements, primers and cleaners for PVC, CPVC, ABS and other plastic piping systems. Weld-On products are globally recognized as the premium products for joining plastic pipes and fittings. Headquartered in California, Weld-On has state-of-the-art operations throughout the United States, as well as China, and a worldwide network of sales representatives and distributors.