August 26, 2025 – Sauder Schelkopf, along with co-counsel, has filed a class action lawsuit in the U.S. District Court for the Northern District of California on behalf of California homeowners against Uponor, Inc. The complaint alleges that Uponor’s Red, White, and Blue AquaPEX piping systems (“Uponor PEX”) are defective and prone to premature failure, causing leaks and significant property damage.
The lawsuit seeks damages and injunctive relief for affected homeowners whose homes contain Uponor PEX piping manufactured and sold between 2010 and 2021. According to the complaint, homeowners across California have reported repeated leaks, cracks, and water damage linked to oxidative degradation and alleged manufacturing flaws in the plastic piping.
Allegations in the Complaint
The complaint alleges that:
- Uponor PEX pipes suffer from a defect that causes premature oxidation, embrittlement, and cracking well before the company’s claimed lifespan.
- Homeowners have incurred substantial costs for repairs, remediation, and full repiping of their homes after repeated leaks.
- Uponor allegedly knew of the defects for years but failed to disclose them to consumers, contractors, or building officials.
The lawsuit asserts claims under California consumer protection laws, negligence, fraud by concealment, strict liability, and unjust enrichment. Plaintiffs seek compensation for repair costs, property damage, and other relief available under the law.
Potential Impact on Homeowners
According to the complaint, thousands of California homes may have been built with the affected Uponor PEX piping, which was marketed for use in potable water distribution, radiant heating, and fire protection systems. The alleged defects may result in ongoing leaks and water damage if the pipes are not replaced.
“Homeowners reasonably expect that their plumbing systems will last decades without catastrophic failures,” said Joseph Sauder, partner at Sauder Schelkopf. “This lawsuit seeks to hold Uponor accountable for the alleged widespread defects in its PEX piping and the damages suffered by homeowners.”
Sauder Schelkopf $43.5 million Settlement in Similar PEX Case
Sauder Schelkopf reached a $43.5 million nationwide class action settlement related to plumbing products manufactured by NIBCO. Sauder Schelkopf served as court appointed co-lead counsel in the lawsuit.
About Sauder Schelkopf
Sauder Schelkopf LLC is a national plaintiffs’ law firm that represents individuals in complex class actions, consumer protection matters, and individual litigation. The firm has been recognized by courts nationwide for its dedication, innovation, and results on behalf of consumers, employees, and other injured parties.
For more information about this case or to speak with an attorney, please contact us at www.sauderschelkopf.com or call 1-888-711-9975.