Water is a natural solvent and given the needed time and conditions, it will dissolve anything it comes in contact with. That’s why, depending on where you live, your water can contain iron or manganese which can cause rusty-orange or black staining. You’ll see the stains on clothes, fixtures, sinks, tubs, water-using appliances and toilets. The telltale rust and black colored stains on sinks, toilets and showers, strong metallic taste and impossible to have clean laundry are clear signs that you have iron or manganese in your household’s water. Iron and manganese often occur in water together and are sometimes accompanied by their very unwelcome friend, the rotten egg of the water world: hydrogen sulfide gas. Iron in water typically takes on, three basic forms: ferrous iron, ferric iron and iron bacteria.