The City of Elmhurst, with the assistance of RJN Group, will be conducting smoke testing to identify locations where storm water is entering the City sanitary sewer system. The study is anticipated to start August 20th and be finished in October, see map with areas that will be tested. Advance notice will be given when the project will reach your area by hanging tags on your front door. Please be on the look out for these door hangers. If you have any questions please contact the City’s Utility Operations Manager @ 630-530-3042. 

Smoke testing FAQs and an informational video can be found at the following link: 

https://www.rjn.com/client-portal/smoke-testing-faq