Sanitary Sewer Smoke Testing

Smoke testing is a way to locate openings in the sewer system that allow rainwater runoff to enter and can cause inconvenient and expensive sanitary sewer backups. Air combined with non-toxic smoke is forced into the sewer lines to disclose the location of leaks and connections to storm water systems. Smoke can be seen coming up out of the ground where there are defects in the lines. Smoke testing also identifies roof drains, patio drains and footing drains that are connected to the sewer system.

2017 Smoke Testing 

The City of Naperville contracted with RJN Group, Inc. of Wheaton, Illinois and Burns & McDonnell of Downers Grove, Illinois to perform smoke testing.  Two areas of the City were smoke tested this past summer. All scheduled areas have been completed and no further smoke testing is scheduled for 2017.

View a map of the Smoke Test Area 1 

View a map of Smoke Test Area 2

Example of Defects Found during 2017 Smoke Testing

Timeline and Location

As of August 17, 2017 all smoke testing has been completed.

Additional Information

Read our Smoke Testing Q&A for answers to frequently asked questions about smoke testing studies. 

Learn more about our contractors

RJN Group website

RJN Group Smoke Testing Video

Burns & McDonnell

Burns & McDonnell Smoke Testing Video 

Department of Public Utilities-Water