Legend (ILWATER/Aquifers)

Major Sand and Gravel Aquifers (0) Aquifer Present Potential Aquifers less than 50 ft (1) Aquifer Present Major Rock Aquifers less than 300 ft (2) Aquifer Present Major Rock Aquifers less than 500 ft (3) Aquifer Present Major Rock Aquifers greater than 500 ft (4) < 2500 mg/L Total Dissolved Solids 2500 to 10,000 mg/L Total Dissolved Solids > 10,000 mg/L Total Dissolved Solids