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Along the same thought, John's Hopkins tested automatic facets with infrared sensors and standard facets with hand levers for hazardous bacteria. After the stud

• aggie 10y ago
  Not necessarily due to the automatic vs. manual distinction but the mechanical design of the valves. "While the precise reasons for the higher bacterial growth in the electronic faucets still need clarification, the researchers say it appears that standard hospital water disinfection methods, which complement treatments by public utilities, did not work well on the complex valve components of the newer faucets. They suspect that the valves simply offer additional surfaces for bacteria to become trapped and grow."
• L_Rahman 10y ago
  It's Johns. One of the things that surprised during my time going to school there was that even buildings less than a year old would have taps with standard levers. I guess they took their own findings to heart.
• acveilleux 10y ago
  Better are those winged levers you can close with your arm or elbow. Most of the staff bathrooms in the hospital I worked in had those along with proper antibacterial soap. Not the Triclosan kind, the high alcohol content kind that's actually effective in a 15 seconds application.
• hx87 10y ago
  What's annoying about automatic faucets is that with most of them you can't change the temperature of the water, and 95% of the time it's too damn hot.