Department of Facilities Management
Dear Campus Community,
City College is committed to ensuring the health and safety of our entire campus community. As part of our routine winter cooling tower maintenance program, a water sample collected on February 5, 2026 from the Marshak Cooling Tower tested positive for the presence of Legionella bacteria. The College was informed of the positive result on February 16, 2026. Upon receiving the test results, the affected cooling tower system was promptly disinfected on February 17, 2026 in accordance with New York City Department of Health and Mental Hygiene (NYC DOHMH) regulations and industry best practices. Follow-up sampling will be collected 3 to 5 days after disinfection, as required by testing protocol. Results of those samples are expected 10 to 12 days after collection.
The College will continue to follow all regulatory requirements and preventive maintenance protocols to ensure the ongoing safety of our campus facilities. For more information on Legionella and cooling tower maintenance requirements, please visit the NYC DOHMH Cooling Tower information page:
https://www.nyc.gov/site/doh/business/permits-and-licenses/cooling-towe…