The Chicago system is capable of providing 185 million gallons per day to DuPage County residents through a network of deep tunnels. The next stop is a pumping station, inside the Chicago city limits. It has a rated capacity of 220 MGD and a storage capacity of 30 MG. This facility is the largest pumping station in the State of Illinois.
A transmission main transports the water from the Pumping Station under the Eisenhower Expressway, to the DuPage Water Commission Pumping Station. From there it branches out through the transmission and feeder mains to the individual municipal customers.
The Village of Clarendon Hills has 2 water towers and an underground storage tank for water storage. The Park Ave. water tower holds 500,000 gallons, the Burlington Ave. water tower holds 250,000 gallons and the underground storage tank holds 500,000 gallons. Water is delivered to homes via 29 miles of water main pipes. Clarendon Hills has two water intake stations. At the intake stations, the water is metered and reduced in pressure from 90 PSI to 45 PSI. The water is purchased from the DuPage Water Commission, of which Clarendon Hills is a member. The DuPage Water Commission buys finished water from the City of Chicago. Finished water has the correct PH, chlorine, flouride and other additives.
Water Quality Reports
2011 Water Quality Report
2010 Water Quality Report