1. Bloomington’s Water Supply: System Overview and Planning by: Rick Twait, Superintendent of Water Purification City of Bloomington Mahomet Aquifer Consortium Meeting No. 56 October 22, 2007

2. Bloomington, Illinois Water Utility 77,000+ Customers 75,000 City Residents 2,200+ Customers from Villages and Public Water Districts 11,400,000 Gallons Average Daily Pumpage Approximately 80% Residential Consumption BNWRD Discharges ~20 mgd

4. Bloomington’s Two Water Supply Reservoirs Lake BloomingtonEvergreen Lake Constructed in 1929Constructed in 1971 Raised 5 feet in 1954Raised 5 feet in 1995 635 surface acres900 surface acres 8,760 acre-ft storage15,480 acre-ft storage 69.5 sq.mi. drainage area41.1 sq.mi. drainage area 70:1 drainage to surface area ratio 29:1 drainage to surface area ratio

10. Additional Watershed Area Due to Mackinaw River Pumping Pool

11. Acknowledgements Steve Stockton, Mayor, City of Bloomington Bloomington City Council, Tom Hamilton, City Manager Brian Brakebill, Deputy City Manager Craig Cummings, Director of Water Jill Mayes, Bloomington Water Treatment Plant Dr. John O’Connor, H2O’C Engineering Dr. Jack Wittman, Wittman Hydro Planning Associates The Staff of the Bloomington Water Treatment Plant and Water Department Our Water Customers