Rainwater left untreated in cooling towers atop city-owned Harlem Hospital fueled the Big Apple’s deadliest Legionnaire’s disease outbreak in a decade, the Rev. Al Sharpton charged Tuesday.

Lawsuits filed this week in New York City accuse construction companies of overlooking safety concerns that led to a deadly Legionnaires’ disease outbreak in Harlem.

A law firm filed a lawsuit Aug. 20 against a New York City hospital’s construction company, alleging the company failed to treat bacteria-infected water in its cooling towers, leading to a Legionnaires’ disease outbreak.

Two construction workers who claim they contracted Legionnaires' disease while working at or near Harlem Hospital Center are suing contractors they allege failed to safeguard water cooling towers at the building against contamination by the bacteria that causes the illness.

Eight 375ft-tall cooling towers crashed to the ground yesterday in the largest simultaneous demolition of its kind. Hundreds of people watched the structures’ tumble at Cottam Power Station in