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More than 2 million Americans, including nearly 68,000 in Illinois, get water from wells with high levels of toxic arsenic, according to a new study by the U.S. Geological Survey and Centers for Disease Control and Prevention.

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EPA Administrator Scott Pruitt speaks April 19 after meeting with residents of East Chicago’s lead-contaminated neighborhoods. (Alex Ruppenthal / Chicago Tonight)

Since 2010, the EPA has cited an East Chicago steelmaking facility six times for violations of the Clean Air Act. Now, a group representing nearby residents intends to sue EPA Administrator Scott Pruitt over the renewal of the company’s operating permit.

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(Google Maps)

Chicago public health officials have given the Southeast Side company an additional week to come up with an improved plan for reducing emissions of manganese dust.

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A Chicago company has until Sept. 6 to submit a plan for reducing brain-damaging manganese dust that has been found nearby in a primarily low-income, minority neighborhood on the Southeast Side.

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The bulk storage operator on Chicago’s Southeast Side has exceeded a federal threshold for emissions of toxic manganese dust, according to new air monitoring data published by the EPA.

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The city will monitor soil and air pollution near residents’ homes and begin increased inspections of industrial sites. 

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An overhead photo of S.H. Bell's Chicago facility appears to show rust-colored stains from manganese handled by the company. (Google Maps)

A Chicago neighborhood once permeated with black dust from uncovered piles of petroleum coke now faces another toxic pollutant, but one that is not as visible or widespread.

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(Alex Ruppenthal / Chicago Tonight)

Environmental Protection Agency chief Scott Pruitt said he does not believe in “regulation through litigation,” but his stance appears to be subject to change.

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Chicago researchers are looking for lead, manganese and other metals that could affect lung function in children with asthma. 

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The Illinois senator is calling on federal environmental and public health regulators to conduct a new assessment of toxic pollutants in one of the city’s most industrialized areas.

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(Creative Commons /  © 2013, Jeremy Atherton)

A coalition of attorneys general and the city of Chicago is prepared to challenge the Trump administration’s environmental policies in court.

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Newly released data from air monitors on Chicago’s Southeast Side shows higher levels of manganese than previously recorded, prompting renewed calls for a ban of the toxic metal, which can cause nervous system damage at high exposures. 

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(Creative Commons /  © 2013, Jeremy Atherton)

A new $450,000 federal grant program partners CPS students with university professors to study the impact of toxic metals on Chicago neighborhoods. 

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Chicago elected officials and environmental leaders react to President Trump's decision to withdraw the U.S. from the Paris climate accord. 

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(Google Maps)

A company on the West Side of Chicago has been cited for improperly storing chemicals and threatening public health, according to a suit filed by Illinois Attorney General Lisa Madigan.

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An announcement last month from the EPA prompts Chicago to launch its own website dedicated to the science behind climate change.