Due to the COVID-19 pandemic, our in-person facility tours are postponed until further notice.


Join us for a Virtual Tour!

Travel back in time to early Chicago to see how we reversed the Chicago River and developed wastewater treatment technology. Go behind the scenes and under water to see how we transform water; descend 300 feet into the deep tunnel system, and watch our electrofishing crew at work sampling fish on the Chicago River. 

Our virtual tours are free and open to the public. Registration is required. 

No time on your schedule? Click here to watch a one hour recorded tour.


Date Time Registration
October 4, 2022 2pm-3:15pm Register
November 15, 2022 2pm-3:15pm Register


Deep Tunnel 50th Birthday and Virtual Tour
October 26, 10 a.m.

Join us at 10 a.m. on Wednesday, Oct. 26 for a live virtual tour to celebrate the 50th birthday of the Tunnel and Reservoir Plan (TARP), aka the Deep Tunnel, the vast project designed to protect our rivers and Lake Michigan from sewer overflows and provide an outlet for floodwaters to reduce street and basement backup flooding.

 Descend hundreds of feet underground to see tunnels being excavated. Watch as thousands of tons of rock are blasted out during reservoir construction. See billions of gallons of combined sewage captured and pumped to treatment plants to be cleaned. Join our biologists to survey the effects of the project on water quality and fish population.

 Special guests will share their first-hand knowledge of planning, building, and operating this one-of-a-kind system. The tour will feature never before seen views of the project, drone video, archival film, and 425-million-year-old fossils. 


Questions from Virtual Tours

Click here for responses to some questions we have received on our virtual tours.