Arizona’s drinking water contains toxins, high hardness, and dissolved solids present in the water that normal water filtration does not take care of. Water filtration can be costly especially living in the desert; that is why a multi-stage reverse osmosis system is the smartest way to provide you with purified fresh water at a low price. SweetWater Systems offer three different types of reverse osmosis purification process’ for drinking water systems to appeal to everyone’s needs.