PPI warns about uncertified PEX tubing sold in Canada and the U.S.

The Plastics Pipe Institute says some crosslinked polyethylene tubing being sold in Canada and the U.S. may not meet mandatory industry standards or third-party certification rules. PPI warns the products could raise failure, liability and compliance risks in plumbing and mechanical applications.

Why it matters: - PEX tubing that is not third-party certified can create safety, compliance and liability risks in plumbing and mechanical systems. - PPI says non-compliant tubing can lead to premature failure, property damage, failed inspections and costly rework. - Installers, retailers, distributors and specifiers can face potential legal exposure if a product failure occurs.

What happened: - The Plastics Pipe Institute issued an advisory on July 13, 2026, about certain crosslinked polyethylene tubing products sold in Canada and the USA. - PPI said its review found some of the products may not comply with mandatory industry standards and are not third-party certified, despite implied claims that they are suitable for plumbing and mechanical use. - PPI said reports indicated the tubing has been offered through several distribution channels, including popular online retailers.

The details: - The tubing has been marked with ASTM F876 and CSA B137.5, which can indicate compliance. - PPI said the products are not listed and labeled by third-party certification agencies to verify compliance with those standards. - PPI said code requirements for PEX tubing used in plumbing and mechanical applications call for marking with standards such as ASTM F876 or CSA B137.5 and third-party certification. - The tubing has been sold for potable water and hydronic heating systems, where specifiers, engineers, insurers and building owners expect high levels of compliance and performance. - PPI said non-listed materials provide no assurance of product quality and may not perform as intended. - PPI said responsibility for a failure can extend across multiple parties in the supply chain when due diligence on certification and compliance cannot be shown. - PPI said business impacts can include failed inspections, removal and replacement of installed systems, warranty claims and damage to brand reputation.

Between the lines: - The advisory reflects a broader concern about products that appear compliant on the surface but lack independent certification. - PPI is trying to steer buyers toward verification, not just product markings, as the key test for code-regulated use. - The warning also signals risk for online marketplaces and distributors moving building products with limited traceability.

What's next: - PPI recommends specifying, purchasing and installing only PEX tubing that is properly third-party certified and clearly marked with the certification agency logo or logos. - PPI said certification records can also be checked on certification agency websites or requested from the manufacturer or supplier. - PPI said tubing without third-party certification markings should be treated as non-compliant and unsuitable for code-regulated applications. - More information is available in PPI's building and construction division resources. - PPI also listed its LinkedIn page and YouTube channel in the release.