Most water carries micro organism. When that water is held within a enclosed Room (similar to a motorhome fresh water tank) bacteria can multiply rapidly. This gets even worse in heat temperatures. Legionella is probably the primary considerations, but so is E-coli and a number of other other sorts of https://finnxj2l2.blogofchange.com/31661111/the-smart-trick-of-how-to-clean-water-tanks-in-al-bukayriyah-that-nobody-is-discussing