Description:This edition of NFPA 22, Standard for Water Tanks for Private Fire Protection, was prepared by theTechnical Committee on Water Tanks. It was issued by the Standards Council on November 10, 2017,with an effective date of November 30, 2017, and supersedes all previous editions.This document has been amended by one or more Tentative Interim Amendments (TIAs) and/orErrata. See "Codes & Standards" at www.nfpa.org for more information.This edition of NFPA 22 was approved as an American National Standard on November 30, 2017.