Water and Wastewater Rates
Water Rate Data
On May 1, 2015, Wholesale Water Rates decreased from $3.70 per 100 cubic feet (ccf) to $3.63. (1 ccf is equal to 748 gallons). The decrease in the Wholesale Water Rate is a direct pass-through of the water rate charged by the DuPage Water Commission, the City of Naperville’s water supplier. Wholesale Water Rates are approximately 70% of customers’ monthly water utility bills.
The Wholesale Water Rate component is determined by the DuPage Water Commission based on the City of Chicago’s water rates. Accordingly, the wholesale water rate is automatically passed directly through to City of Naperville utility customers.
Please note that all unincorporated Naperville water customers pay a 10% surcharge on the water rates. These customers' bills will reflect volumetric (wholesale and retail) rates 10% higher than the rates published below, which apply to incorporated Naperville customers.
The wholesale rate is a pass through rate to the consumer. However, the wholesale rate does require City Council action to amend and/or adopt new rates as we receive information from the DuPage Water Commission.