For twenty over years, Perma-Liner Industries, a Waterline Renewal Technologies (WRT) brand, has been the leading manufacturer and supplier of small diameter Cured-In-Place-Pipe (CIPP) equipment and materials in North America. They were the first relining company approved by NSF International, Standard 14. Because of this, PLI pioneered the specification for CIPP to be used on the plumbing side for plumbing code approvals. PLI offers innovative products through its extensive trenchless platform. With five distribution facilities throughout the United States, PLI is continually expanding to new locations every year where there’s an industry need for commercial, residential and municipal sectors. If you would like more information regarding our products or services, please contact us for additional information.