Preventive Maintenance
Preventive Maintenance

In the past 20 years, Naperville has lined 513,518 feet of sanitary sewer, 2,412 sanitary service laterals and rehabilitated 1,289 manholes, representing an estimated reinvestment of more than $55 million in the sanitary sewer system.
Proactive Maintenance
Proactive Maintenance

An overburdened sanitary sewer system can cause wastewater to back up and, in some instances, flow back into residences. It can also have a negative impact on the the efficiency and life cycle of water treatment equipment. Learn about Naperville's proactive plan to identify and correct areas where incorrect connections or aging infrastructure are contributing to excess water entering and overburdening the sanitary sewer system.

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Maintaining Our System

Naperville's Water Utility takes great pride in ensuring its water and wastewater systems are maintained at optimal levels. Various maintenance programs are in place to maintain the longevity of Naperville's system.

Did you know?

The Water Utility’s Leak Detection program found 41 leaks in 2025? This is

$2,000 per day
saved in water loss.

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City Water Efforts Get National Attention

Did you know?

City Water Efforts Get National Attention

The Water Utility's Collection and Pumping section was the featured story in was the Municipal Sewer and Water magazine in November 2015. The national trade publication featured the City’s reduction efforts on inflow and infiltration (I&I), a focus of the utility for approximately 20 years. Reducing this type of water infiltration into the sanitary sewer system during heavy rainfall reduces basement backups and surcharges. The Utility plans additional work throughout the year and annually cleans approximately 1.2 million linear feet (227 miles) of sanitary sewer to maintain the system’s quality, which has not had a wet-weather basement backup since April 2013. The I&I program has led to fewer surcharges and basement backups and decreased flow to the Springbrook Water Reclamation Center.

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Department of Public Utilities-Water