A city of Chicago outfall at the Wild Mile floating wetland installation on the North Branch of the Chicago River. (Patty Wetli / WTTW News)

“Chicago owns the most outfalls that discharge into the river system, and controlling what comes out of them is essential to reach our shared vision for a fishable-swimmable river that is accessible to everyone,” said Margaret Frisbie, executive director of Friends of the Chicago River.

Challenger Sharon Waller bested incumbent Daniel “Pogo” Pogorzelski in the Democratic race to claim a seat on the Metropolitan Water Reclamation District’s board of commissioners. (Provided)

Challenger Sharon Waller has bested incumbent Daniel “Pogo” Pogorzelski in the Democratic race to claim a seat on the Metropolitan Water Reclamation District’s board of commissioners, according to unofficial results from the Chicago Board of Elections released Tuesday evening.

Challenger Sharon Waller is facing incumbent Daniel “Pogo” Pogorzelski in the Democratic race to claim a seat on the Metropolitan Water Reclamation District’s board of commissioners. (Provided)

Challenger Sharon Waller holds a slight lead over incumbent Daniel “Pogo” Pogorzelski in the race to claim a seat on the Metropolitan Water Reclamation District’s board of commissioners, with more than 100,000 outstanding vote-by-mail ballots still uncounted.

Flooding in Chicago on July 6, 2023. (WTTW News)

The entire city was drenched with torrential rain earlier this week, but residents on the West Side were hit especially hard as more than 8 inches of rain fell in the Austin community and nearby suburbs.

Flooding is captured in Chicago on July 2, 2023, in Chicago. (Paris Schutz / WTTW News)

As much as 8 inches fell in certain areas over the weekend, followed by major flooding. Areas on the city’s West Side and western suburbs saw over 8 inches on Sunday, according to the National Weather Service.

Every time you flush, the waste disappears in a swirly whirl, never to be seen again. It’s magic! Actually, it’s science and engineering. WTTW News Explains. 

(WTTW News)

The Metropolitan Water Reclamation District treats stormwater and wastewater for more than 5 million people in Cook County. One of the methods to treat that water is a surprising way to reuse a byproduct from the creation of a very popular beverage: locally brewed beer.

A polling place on the North Side of Chicago is pictured on Nov. 8, 2022. (Patty Wetli / WTTW News)

With just one incumbent on the ballot and four seats up for grabs, the Metropolitan Water Reclamation District Board of Commissioners is guaranteed to welcome a raft of new faces once votes are tallied Tuesday night.

Fish species diversity has been increasing in the Chicago River. (Shedd Aquarium)

Back in the 1980s, the number of fish species found in the Chicago River could be counted on a single hand. Today, that number is up to 60 species, an increase in diversity that can be directly attributed to a decrease in wastewater pollutants, according to a new study from the Shedd Aquarium.

(WTTW News)

A University of Illinois Chicago lab and its partners have been tracking the virus that causes coronavirus in wastewater and sharing the data with local public health agencies. 

Repairs are just getting underway on a stretch of lakefront damaged by a storm in January 2020. (Courtesy of Metropolitan Water Reclamation District)

The repair, expected to take six weeks, will consist of piling 1,500 tons of rocks along the shoreline and building a concrete wall to guard against further erosion.

Heavy rains can overwhelm Chicago's sewer system. (Roman Grac / Pixabay)

The past few springs, Chicago has notched record-breaking rainfall totals. All that water has to go somewhere, and when it overwhelms the city’s sewers, untreated wastewater winds up in the Chicago River.

(Rudy and Peter Skitterians / Pixabay)

The second annual event offers simple ways to conserve water in advance of World Water Day.

With temperatures soaring above freezing in Chicago, the “big melt” is well underway. (Patty Wetli / WTTW News)

Postponing activities like laundry, running the dishwasher or even showering will provide maximum capacity in the sewers for snow melt.

(Courtesy: Metropolitan Water Reclamation District of Greater Chicago)

When it comes to designing buildings, form may follow function, but that doesn’t mean function has to be without form. Geoffrey Baer joins us with the story of the O’Brien Water Reclamation Plant and other ornamented utility buildings. 

A section of the MWRD's Deep Tunnel. (Metropolitan Water Reclamation District of Greater Chicago / Facebook)

An upcoming virtual tour will offer insights into the Metropolitan Water Reclamation District’s inner workings and will revisit the reversal of the Chicago River.