Here’s something new to be scared of — showerheads spraying out bacteria linked to pulmonary disease. According to this article from MSNBC, 20% of 45 showerheads tested in five states sprayed water which contained Mycobacterium avium, which can pose a health threat to people with weakened immune systems. Researchers at the University of Colorado, Boulder, discovered presence of the bacteria at levels 100 times the amount found in the municipal water sources.

Relax, says Newsweek, the bacteria is not likely to kill you. So please, continue showering. Those with compromised immune systems should change their shower heads regularly and use ones made of all metal.

And if you’d like to make a change or just clean your existing nozzle, here is a demo on how to install a new showerhead.

Credit: MSNBC article