Illinois Community Water Supply Wells

Illinois Community Water Supply Wells - Illinois has abundant buried groundwater reserves that supply millions of gallons of groundwater per day for public, agricultural, and industrial/commercial use. These aquifers are unevenly distributed throughout the state. Fortunately, surface water or a coMBination of groundwater and surface water is available to meet required needs in most cases where groundwater resources are marginal. This map depicts community water supply wells in relation to the major aquifer systems in Illinois. A community water supply is defined as “a public water system which serves at least 15 service connections used by residents or regularly serves at least 25 residents for at least 60 days per year.” Only community wells classified as active in the ISWS Public-Industrial-Commercial Survey database for the Year 2003 are shown.Ope