A recent study showed that about 30% of showerheads contain traces of a bacterial strain called Mycobacterium avium, which has been linked to lung disease and a flu-like feeling of fatigue in those whom it affects. Additionally, traces of other bacteria were found, depending on the regions tested. Some showerheads actually contained more bacteria than the municipal water sources that fed the shower. Though hot water flushes through showerheads daily, it is not uncommon to find bacterial and mold build-ups in the heads, creating a slimy and sludgy substance called bio-film. Additionally, minerals may build up in showerheads, causing water pressure to decrease, or for water to shoot out at odd angles when the water openings become clogged up. But don’t let fear of bacteria or bad water pressure spoil your showers. Solving these problems can be easy if you are willing to clean your showerhead.