The NYC Legionnaires' outbreak: water safety in big buildings

ABC7 New York reported a seventh death in a Legionnaires cluster on the Upper East Side of New York City on July 30, 2026.

What happened

Reporting on the cluster says it was first identified on July 2, with 92 diagnoses and more than 70 hospitalizations. As of July 30, 183 cooling towers at 160 buildings had been tested, and 59 towers at 58 buildings were culture positive for Legionella. The city said the source was eliminated.

What it means for your home

The testing covered cooling towers at buildings. For families, the useful lesson is to learn the warning signs from a doctor or the CDC and to act early if someone feels sick.

What to do this week

• Ask your doctor or pharmacist to explain the warning signs of Legionnaires' disease.
• If someone in your home feels seriously unwell, call a doctor promptly.
• Keep a thermometer in your first aid kit.
• Write down your doctor's and pharmacy's phone numbers and keep them with your emergency papers.
• Keep a water purification supply on hand in case tap water is not safe to use.

For water safety at home, read our guide to making water safe to drink.