Submitter's message Please note that a new version of this document has just been published. NSF employees will be able to view this document in MasterControl (document #12486); others can use the link below. Thank you for your contributions to this document! -- Amanda Zeoli Document Name : NSF/ANSI 358-1-2020: Polyethylene Pipe and Fittings for Water-Based Ground-Source ?Geothermal? Heat Pump Systems Description This Standard establishes the minimum physical and performance requirements for plastic piping system components. These criteria were established for the protection of property, public health and the environment. Download Latest Revision Submitter : Amanda Zeoli Group : Joint Committee on Plastics and RV Plumbing Components Folder : Standards Date submitted : 2020-06-26 11:25:06 Revision : 4