Dr. Matthew Arduino, CDC public health microbiologist, said, “When you’re out in the distribution system, the municipal system, the concentration of these organisms is not a risk. They’re usually very low in numbers. For most individuals out there, it’s not a problem. It’s not a health risk for the majority of people.”
“It only becomes a risk when the organism amplifies, which tends to happen in large buildings; hospitals, apartments, other sorts of clinics. I’ve seen outbreaks in allergy clinics.
“Is it a risk to all patients? It depends on how you’re using water. So maybe the key message is, water in hospital rooms needs to be kept away from open wounds or bathing with a central line (tube).”