The Uniform Plumbing Code™ (UPC™) and Canadian Uniform Plumbing Code™ (cUPC™) are designated as the American and Canadian national standards, respectively. These codes are designed to provide consumers with safe and sanitary plumbing systems. Commercial construction projects, as well as many residential construction projects, normally require specified products to be certified. Most of our Ariel sinks, faucets and bathtubs are UPC/cUPC certified, facilitating their use in all types of projects. Please click on the link below for iapmo's website and you can type in the model # for items and view product certificates.