NEW YORK CITY — New York City is expanding inspections and regulation of cooling towers following deadly outbreaks of Legionnaires' disease, including a major outbreak on the Upper East Side.
The city is allocating additional funding and expanding its inspection capacity as officials seek to reduce the risk of future outbreaks.
New Rules Target Cooling Towers
Cooling towers are commonly used to provide air conditioning for large buildings.
When systems are improperly maintained, they can become contaminated with Legionella bacteria.
The bacteria can cause Legionnaires' disease, a serious form of pneumonia.
New York experienced a major outbreak in Harlem in 2025 that killed seven people and sickened more than 100.
Another outbreak on the Upper East Side in 2026 resulted in dozens of cases and multiple deaths.
Investigations found Legionella contamination in numerous cooling towers.
The city has responded with tougher regulations.
Officials plan to hire additional water specialists and increase inspection activity.
New rules also require more frequent cleaning and certification of cooling towers.
Building owners face greater responsibility for maintaining their systems.
The effort comes as New York deals with increasingly hot summers.
Higher temperatures can lead to greater use of air-conditioning systems, potentially increasing the importance of proper cooling-tower maintenance.
City officials say prevention is essential.
The new rules are designed to identify contamination before it becomes a public-health crisis.
For residents, the changes may be largely invisible.
But health officials say regular inspection and maintenance can significantly reduce the risk of future outbreaks.
