Burns & McDonnell designed two 1 million gallon elevated water storage tanks and connecting 24-inch water mains to increase system storage capacity from 3 million gallons to 5 million gallons. Additional water mains were designed along with the storage tanks to increase firm capacity and provide more rapid flow rates for the system, which pumps an average daily flow of 4.2 million gallons.
The elevated water storage tanks are at two separate locations in O’Fallon, Ill. Complete design phase and bid phase services were provided. In addition, Burns & McDonnell provided design support during construction. Construction began in fall 2007.