ASHRAE Seeks Comments on Revisions to Legionella Guideline 12

Published November 7, 2018

ASHRAE, the American Society of Heating, Refrigerating, and Air-Conditioning Engineers, has opened a third round of public comments on ASHRAE Guideline 12, which is intended to provide information to assist in control of legionellosis associated with building water systems. The public review draft of ASHRAE Guideline 12- 2000R, Proposed Revision of Guideline 12-2000, Managing the Risk of Legionellosis Associated with Building Water Systems, is available as a PDF via the organization’s online comment database. This version of the draft document shows proposed revisions in strikethrough or underlined text to indicate changes from the previous public review draft. Revisions have been proposed for many sections of the guideline, including those that describe legionellosis and Legionella, potable water systems, ornamental water features, and cooling towers.

Legionella Guideline 12 is also intended to provide guidance related to the implementation of ASHRAE Standard 188, Legionellosis: Risk Management for Building Water Systems, which was the first industry standard in the U.S. to address Legionnaire’s disease prevention. Standard 188 was recently revised to clarify compliance requirements and facilitates adoption of the standard for regulatory purposes.

More information on Legionella Guideline 12, including how to submit comments, is available on ASHRAE’s website.

Related: The article “The New Age of Legionella” in the June/July 2015 issue of The Synergist discusses the AIHA guidance document Recognition, Evaluation, and Control of Legionella in Building Water Systems.