A monthly surcharge has been added to customer utility bills to help fund mandated improvements to the Springbrook Water Reclamation Center for the purpose of removing phosphorus nutrients. The purpose of this surcharge is to fund 50% of the estimated cost of these improvements.

System Average Interruption Duration Index (SAIDI) Outage in Minutes. SAIDI is the average outage duration for each customer served, and is calculated as the sum of all customer interruption durations divided by the total number of customers served . SAIDI is measured in minutes or hours over the course of a year, and according to IEEE Standard 1366-1998 the median value for North American utilities is approximately 1.50 hours.

Number of Joint Utility Locating Information for Excavators (JULIE) Requests Serviced by Electric Utility per month

Citywide total daily electric load (usage) measured hourly, presented here as a daily total beginning on January 1, 2012 through last updated date.

Special Events Cultural Amenities (SECA) grant awards from fiscal year 2010 through calendar year 2018. The mission of the Special Events Cultural Amenities (SECA) Grant Program is to create opportunities to provide social events and artistic experiences for Naperville and its visitors.

This dataset quantifies watermain leaks discovered during surveys of the water system utilizing acoustical listening devices. From 2013-2017 a single City-wide survey was conducted per calendar year. Beginning in 2018 two City-wide surveys were completed.

Rates for water, and wastewater service for the City of Naperville and surrounding communities. These rates are based off of 5,610 gallons of consumption.

Naperville's Electric Customer Classification.

All of the City's capital improvement projects over the next five years. This information categorizes the City's projects and includes information regarding funding sources, expense types, and asset types.

This includes all the City's sales tax receipts including both the one percent state collected portion and the City's home rule sales from 2005 through present. The information is broken down by when the dollars were collected by the state and when the dollars were distributed to the City.