August 26, 2026 — In response to the recent Legionnaires’ disease outbreak in New York City, BOMA International, the leading trade association for commercial real estate professionals, is highlighting resources and guidance to help commercial owners and managers assess risks, strengthen water management practices, and prevent the spread of Legionella bacteria.
According to New York City health officials, the source of the outbreak has been identified and remediated following extensive testing and disinfection efforts. The outbreak resulted in dozens of reported cases and several deaths, underscoring the importance of proactive building water system management.
While health officials have contained the immediate threat, this outbreak serves as an important reminder that Legionella prevention requires ongoing vigilance. Building owners and managers play a critical role in maintaining safe water systems, and BOMA is committed to providing the resources needed to support those efforts.
Chair & Chief Elected Officer of BOMA International, Kjersten Jaeb, BOMA Fellow, RPA, LEED GA
Legionnaires’ disease is a serious form of pneumonia caused by Legionella bacteria. The disease is not spread from person to person and cannot be contracted through drinking water. Infection occurs when individuals inhale aerosolized water droplets containing the bacteria, which can develop in building systems, including cooling towers, hot water systems, decorative fountains, and other water features, explains BOMA.
Although the recent outbreak occurred in New York City, Legionella risk management is a concern for building owners and operators nationwide. To support the commercial real estate industry, BOMA International offers comprehensive guidance and best practices for preventing, identifying, and responding to Legionella-related risks.
BOMA’s Legionella Guidance Document is available here.
