Standard for the Efficient Use of Water in Building Mechanical Systems
ASHRAE Standard Project Committee 191


Upcoming PC Meetings

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Location: Web Room: NA
Day Thursday June 17, 2021
1pm - 5pm EST Main Committee



  • Call to order 1:00 PM EDT
  • Roll Call
  • Announcements
  • Review proposed responses to review comments
  • Break (15 minutes)
  • Title, Purpose, Scope (TPS) Discussion
  • Workplan
  • Adjourn 5:00 PM EDT


Project Committee meeting minutes are available to interested parties upon written request of the Manager of Standards. Attachments to minutes may or may not be included due to file size and/or because copyrighted intellectual property is included. Decisions to distribute attachments to the minutes will be made on a case by case basis and due to the size of the request may take longer to process.

Title, Purpose, and Scope

Committee Chair

Mr Fred Jan Betz, PhD



Upcoming Society Conferences

ASHRAE 2024 Annual Conference
June 22-26, 2024
Indianapolis, IN


13 January 2021:
SPC 191P committee completed a review of all 94 public review comments and will issue formal responses soon. Thank you to all the commenters on their constructive feedback. 

31 July 2020:
Third public review issued starting the 45 Day review process.

4 July 2018:
The comments from the 2nd Public Review will be incorporated into a full 3rd Public Review as there were numerous great suggestions that will include some substantive changes. 

28 November 2017:
2nd Public Review was completed on 27 November  2017 with 111 comments from 16 commenters. 

29 September 2017:
2nd Public Review will take place for 45 day public review from 13 October 2017 to 27 November 2017.

29 August 2017:
The SPC 191P Committee has voted to approve the standard go out for it's 2nd public review with a vote of: 11-yes, 1-no, 5-abstentions. The precise timing of the public review will be published when it's determined.