Sanitary Sewer Rehabilitation

Heavy rainfall events can cause inconvenient and costly damage to property due to sanitary sewer backups. The City of Naperville Water Utilities has implemented a strategic plan to reduce and eliminate the frequency and severity of these backups by reducing stormwater and groundwater infiltration into the sanitary sewer pipe network. This strategic plan has improved our sanitary pipe network significantly in recent years using sewer lining, manhole rehabilitation and pressure testing and grouting of joints.


Project Updates

Sanitary Lateral Rehabilitation: 

Naperville Water Dept. has contracted with Performance Pipelining Inc. to install cleanouts and rehabilitate the City’s sanitary sewer laterals in Crest Creek. The work is scheduled to take place from January through the December.

The project involves televising sanitary lines and laterals, installing cleanouts, and lining laterals where needed. View the 2024 sanitary lateral rehabilitation map.

Manhole Rehabilitation: 

The City of Naperville has contracted Conco Spray Solutions to rehabilitate 50 sanitary sewer manholes. This project will not interrupt sewer services for most customers, but few will be notified and asked to delay water use for up to an hour. Conco Spray Solutions cleans each manhole and then sprays Spraywall to rehabilitate the manholes. The effected subdivisions include Arthur T. McIntosh and Company's Naperville Highlands, Edwards Hospital, Naper Estates, The Meadows, Moser Highlands & Shiffler Brothers Oak Hills. This program has been used by the City for years to increase structural stability of sanitary structures, as well as reduce ground and storm water inflow and infiltration. View the 2024 manhole rehabilitation maps.

Small Diameter Lining:  

The City of Naperville has contracted Hoerr Construction, Inc. to rehabilitate 14,000 linear feet of small diameter sewer mains. Hoerr Construction, Inc. will utilize CCTV and jet flushing to investigate and clean the sewers. The lining portion consists of steam curing a resin-saturated CIPP liner. This process creates a new pipe within the host pipe and has a life expectancy of 50+ years.  The concentration of the work will take place on the following streets: Frontenac Rd., Shore Rd. & Golfview Rd. There will be minimal work on North Aurora Rd. & Diehl Rd. The anticipated start date is April 22nd and should conclude mid-June.  View the 2024 small diameter lining map.

Traffic and Parking

This type of work requires large trucks and other equipment. City crews and contractors will place safety cones to keep traffic out of the immediate work area. Work will be performed in small segments and will not affect large areas at any one time. Street closures are very rare. In most cases, traffic flow and parking will be only minimally affected.

Utility Service

The only interruption you may experience is during the actual lining process. You will be asked to not use any water. This includes flushing toilets, doing laundry, showers, etc. for up to four hours duration. We will attempt to notify all affected customers and give enough notice to avoid significant inconvenience.

If you received a notice that the project was going to start on a specific date, and it appears nothing was done, please contact the Water Utility at (630) 420-6137.


You do not need to be home while this work occurs. All the work is done by the outside cleanout and the city's sanitary sewer main.  If access is needed, a city representative will contact you. The contractor will start work at 7 a.m. and stop by 5 p.m. Monday through Friday, weather permitting. 

The contractor will inform you when the work is finished, either verbally or by leaving written notification.


This type of work usually causes very little disruption to pavement and landscape. Any damage that does occur will be professionally restored after completion of each step of the work. 

Following Completion of Work

The newly lined portion of your sanitary sewer service will require little to no maintenance. However, the unlined portion may still need periodic maintenance.

After work is complete, if you smell an odd odor, please call the Water Utility at (630) 420-6137.