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July 9, 2018

National Standard Plumbing Code (NSPC) Committee requests proposed changes for 2021 NSPC


Ontario, Calif. (July 9, 2018) — In order to facilitate the development of an updated National Standard Plumbing Code – Illustrated (NSPC) , the IAPMO NSPC Committee is requesting proposed changes to the 2018 NSPC . All proposed changes are due by March 1, 2019. If approved, these changes will appear in the 2021 National Standard Plumbing Code – Illustrated.

All proposed changes must be submitted in electronic form to If a standard is referenced, a copy of that standard must accompany the proposed code change that is submitted to the committee.

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The National Standard Plumbing Code uses an annual review process and publishes the complete code every three years. For a copy of the code change form with instructions or more information on the National Standard Plumbing Code – Illustrated , please visit

For more information, please contact the IAPMO NSPC staff at

Sponsor of the Uniform Codes, IAPMO ® – The International Association of Plumbing and Mechanical Officials – works in concert with government and industry f or safe, sanitary plumbing and mechanical systems. Learn more about IAPMO at