Because water is such a good solvent, it almost always has some solute dissolved in it, normally a salt. If water has even a tiny amount of these an impurity, then the ions can have prices forwards and backwards, permitting the water to carry out electrical power far more readily. https://kevalaniru.com/make-your-special-moments-memorable-customized-gabletop-water-cartons-for-weddings-special-events/