# A Sensible New Yorker's Guide to Legionella Season
New York City faces legionella contamination concerns, but residents should maintain perspective about actual risk levels. The bacterium grows in warm water systems, particularly in cooling towers, hot tubs, and air conditioning units above 20 degrees Celsius. NYC's tap water remains safe to drink, despite headlines suggesting otherwise.
Legionella causes Legionnaires' disease, a severe pneumonia-like infection spread through inhaled water droplets, not consumption. Most at-risk groups include people over 50, smokers, and those with compromised immune systems. Healthy individuals rarely develop serious illness from exposure.
The Met's cooling tower incident highlighted the real vulnerability. The museum's system required decontamination after legionella detection. Other NYC buildings operate similar infrastructure without incident when properly maintained. Building owners bear responsibility for regular tower cleaning, water temperature management, and system inspections.
For renters and residents, basic precautions work. Request landlords maintain hot water above 51 degrees Celsius and ensure air conditioning systems receive annual professional cleaning. High-rise dwellers should verify their buildings conduct routine cooling tower inspections. Report visible corrosion, leaks, or stagnant water to building management immediately.
Homeowners with personal cooling systems should schedule professional servicing before warm weather arrives. DIY cleaning isn't effective for complex commercial systems. The cost runs $500 to $2,000 annually, but prevents expensive decontamination later.
Media coverage inflates fear beyond reality. Legionella kills fewer New Yorkers annually than other water-borne bacteria. Proper maintenance reduces risk to negligible levels. The city's Department of Environmental Protection monitors water quality and enforces building code compliance.
Buyers evaluating properties should confirm cooling tower maintenance records and air conditioning system age. Properties