Most water carries micro organism. When that water is saved inside a enclosed Area (just like a motorhome contemporary water tank) microbes can multiply quickly. This turns into even worse in heat temperatures. Legionella is among the major problems, but so is E-coli and several other other sorts of microbes. https://holdenjv8b8.fare-blog.com/31073661/the-smart-trick-of-how-to-clean-and-sterilize-water-tanks-in-buraidah-that-nobody-is-discussing