My company makes Robotic Shower Sanitizing Systems. We are presently evaluating re-engineering a current product as an On-Demand (Automatic) Shower-Head and Dead Leg Sanitizing/Cleaning System. However, literature suggests that weakened immune system patients cannot get Legionella from bacteria in the shower-head mist. Is this true? Thank you.
Sterilization on shower heads is unnecessary. You are correct; showering is not a mode of transmission for Legionnaire’s disease. Sterilization of a distal site, such as faucets, is ineffective. The Legionella forms biofilms in the pipes leading to the faucets, and showerheads. If the system is infected with Legionella, the water will still contain Legionella.