A count of some of the major water and wastewater assets within the City of Naperville years 2013-2018.

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.

A count of some of the major water and wastewater assets within the City of Naperville years 2013-2018.

The average number of minutes that a typical customer can expect to be without service in a given year. These service outages are the result of reactive maintenance primarily due to water main breaks.

A count of some of the major water and wastewater assets within the City of Naperville years 2013-2018.

A count of some of the major water and wastewater assets within the City of Naperville years 2013-2018.