A hate crime is defined by the FBI as a “criminal offense against a person or property motivated in whole or in part by an offender’s bias against a race, religion, disability, sexual orientation, ethnicity, gender, or gender identity.”
The State of Illinois Police (I.S.P.) and Federal Bureau of Investigations (F.B.I.) have specific reporting guidelines for Hate Crime data. Due to the Naperville Police Department’s proactive stance on this crime type, data presented on the Open Data Portal may differ with what is reported through ISP and the FBI. For information on the guidelines set forth, please visit https://www.isp.state.il.us/crime/ucrhome.cfm for further details.
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.
Naperville receives its water supply from Lake Michigan through the DuPage Water Commission. This dataset shows the average daily amount of water purchased by the City of Naperville in millions of gallons by month.
The Water Utility calculates the System Average Interruption Duration Index (SAIDI) to measure the reliability of the water system. This index is represented as the total number of minutes each customer can expect to be without service in a given year.