The City of Elmhurst, in a continuing effort to remove inflow and infiltration from its sanitary system, is conducting a program to identify locations where storm water is entering the City sanitary sewer system. The study includes smoke testing sanitary mainline sewers in locations shown on the attached map. It is anticipated that the testing will begin in July and continue for approximately 6-8 weeks. As smoke testing teams reach your area, door hangers will posted in advance of smoke testing. If you have any questions, Please reach out to Chris Dufort, Supt. of Collection and Distribution @ 630-530-3036.