Three new cases of Legionnaires' disease have been confirmed at a public housing complex in Harlem.

The Department of Health found six of the 13 water tanks at the Saint Nicholas Houses tested positive for elevated levels of Legionella bacteria.

NYCHA began testing the water supply at the complex about two weeks ago.

All of the tanks were drained and cleaned Saturday, and the victims are already out of the hospital.

“If this isn’t evidence as to why you need these upgrades done quicker then I don't know what is. You can't have old on top of new and then you keep going again. You keep putting a band aid on a problem when you need major surgery," one resident suggested.

Legionnaires’ disease is caused by inhaling contaminated water vapor, but it is not contagious between people.

The disease can cause symptoms similar to pneumonia.