GRANITE CITY, Ill.--(BUSINESS WIRE)--Illinois American Water recently invested approximately $6 million to construct Ultraviolet (UV) disinfection at the Granite City water treatment plant. The new treatment technology supports safe drinking water to residents and businesses. As part of the project, three new UV reactors were installed and are capable of treating up to 15 million gallons of water a day.   “There is nothing more important than the quality of the product we deliver to our customers’ taps. This is why we continuously wo...