Important Information About Arsenic Limits For Drinking Water Illinois-American provides water to about 770,000 people in 90 cities, towns and villages. The Mississippi, Ohio, Illinois and Vermilion Rivers are the surface water sources used by Illinois-American.
Surface water is exposed to many contaminants .
Many everyday activities such as farming, factories, cars and trucks, and even boats, add unwanted pollutants to surface water. That's why surface water treatment plants use many steps to treat the raw water . Groundwater is used in areas that are not near rivers. These areas rely on water which is stored underground in small spaces between grains of sand or gravel or in cracks in solid rock. Illinois-American gets groundwater by drilling a well into an aquifer.