Geothermal Plastic Piping Systems Certification
Most U.S. state and Canadian province drinking water regulations require pipes and fittings conveying drinking water to meet the requirements of NSF/ANSI/CAN 61 to ensure components will not contribute harmful levels of contaminants to the drinking water.
What is NSF/ANSI/CAN 61?
NSF/ANSI/CAN 61: Drinking Water System Components -Health Effects is the American National Standard and the Canadian National Standard that establishes the health effects requirements for chemical contaminants and impurities that are indirectly imparted to drinking water from products, components, and materials used in drinking water systems.
How do I know if HDPE pipes or fittings meet this NSF requirement?
HDPE pipes or fittings certified by NSF will bear either the NSF®-61 mark or the NSF® pw (potable water) mark on the print string. The NSF® pw mark indicates the product meets the health requirements of NSF/ANSI/CAN 61 as well as performance, long-term strength, and quality control requirements in NSF/ANSI 14: Plastic Piping Components and Related Materials.
Learn more about our materials and ingredients services
Verify the compliance of materials and ingredients with both North American and international standards.
How NSF Can Help You
What’s New with NSF
NSF Achieves European Accreditation for Drinking Water Product Certification Ahead of 2027 EU Deadline
July 22, 2026The ISO/IEC 17065 accreditation from BELAC complements NSF’s testing capacity, enabling end-to-end support for EU Drinking Water Directive (DWD) readiness ahead of the January 2027 deadline.
NSF Awards World-First Community Catch Certification to Orkney Crab Fishery
July 13, 2026Milestone certification sets a new benchmark for small-scale fishery sustainability and social responsibility.
NSF Issues First-Ever MSC Certification for an Eel Fishery to Perupez S.A.C. and Sakana del Peru
June 19, 2026Third-party certification plays a key role in independently verifying the sustainability of seafood operations.
NSF Ends UK’s Three-Year Testing Gap with REG 31 Testing Designation
May 20, 2026NSF’s Oakdale laboratory becomes the UK’s sole facility offering comprehensive BS 6920 and REG 31 testing, closing a critical drinking water safety gap.