DuPage Water Commission Facilities (page 2)
These mains, constructed by the Commission, transport water west to the reservoirs at the DuPage Pumping Station in Elmhurst. The treated water travels 9.3 miles from the Lexington Pumping Station to the DuPage Pumping Station. This facility houses the administrative offices of the DuPage Water Commission. The DuPage Station's nine distribution pumps have a pumping capacity of 185 million gallons per day. The station's reservoir, like the Lexington Station's reservoir, holds 30 million gallons. The control center is equipped with sophisticated computers that monitor the delivery of water though more than 130 miles of transmission and feeder mains to the Commission's wholesale customers.

After leaving the pumping station the water flows through the distribution pipes to storage tanks and metering stations serving the Commission's wholesale customers. Once it travels ten feet beyond these metering stations, the water becomes the property of the receiving utility. Each wholesale customer owns and operates pressure adjusting stations to increase or decrease the water pressure it needs for its own particular water works system. After leaving the pressure adjusting stations, water flows to local distribution systems where it is used for commercial and industrial purposes, as well as for fire fighting and residential consumption.

The Water Commission system is the second largest in the State of Illinois. It will provide a better quality of water to its service area of more than 300 square miles, projected to have a population of almost one million by the year 2020. The Commission's large network of underground mains assures DuPage County of a plentiful water supply for at least the next 100 years.