Workers with a Lee Memorial Hospital contractor dumped industrial dye into a storm drain in Naples, Fla., that leads to a creek flowing into the Caloosahatchee River, according to an article on the Naples Daily News website.
The dye, a non-hazardous tracer chemical used in hospital mechanical systems, caused the water in the creek to turn red.
Hospital crews are working with the contractor on cleanup.
A safety sheet provided by the company describes the chemical as non-flammable, non-carcinogenic and a "low" hazard for humans.
Why Healthcare Facilities Management Is Critical to Patient Safety 
Sanford Health and North Memorial Health Finalize Partnership
Cornerstone Behavioral Healthcare Falls Victim to Ransomware Attack
Containing Candida Auris Across the Care Continuum
Early Entry: Manager's Critical Role in Construction Planning