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Hundreds plunge in Chicago River for first official swim in nearly 100 years

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Sunday, September 21, 2025

Hundreds of people plunged into the Chicago River’s chilly waters on Sunday as part of the first organized swim in the river for nearly 100 years, a previously unthinkable act in what was once one of the most befouled waterways in the world.About 300 people, some wearing wetsuits, jumped into the Chicago River for a mile-long looping swim on an early, overcast midwest morning, a feat made possible by the often unseen but crucial progress the US has made in the past half century in cleaning its rivers of toxic pollution.“It’s overwhelming to see this happen, it’s unbelievable to see swimmers swim past us now,” said Doug McConnell, the main organizer of the event.McConnell, a Chicago area native and co-founder of A Long Swim, had been pushing the city’s leadership for more than a decade to allow a swim in the river, the first such event since 1927, having witnessed the blossoming urban river swimming movement take hold in cities such as Paris, Munich and Amsterdam.“Seeing that really planted a seed, and we are thrilled we are finally doing this and that it has got global attention – we had applications across the US and 13 countries,” said McConnell, who hopes this will become an annual event and spread to other US cities.McConnell didn’t leap into the water on Sunday but is an accomplished long-distance swimmer, having traversed the English Channel, which he recalls as “14 hours of getting slapped around”, and swam around the island of Manhattan, all in aid of amyotrophic lateral sclerosis (ALS) fundraising.“I think the water conditions will surprise people because it will be cleaner than they expect,” he said. “The psychology of so many Chicagoans was that the river is untouchable – this isn’t true and we are proving this today.“My grandfather grew up in Chicago and I think what his reaction to all of this would be because the river had an absolutely toxic reputation then. It was repulsive, absolutely untouchable.”The Chicago River has a long history of being meddled with. Each year it is dyed green for St Patrick’s Day and, infamously, in 2004 the tour bus of Dave Matthews Band released 800lbs (363kg) of human waste through a bridge grate that landed on top of a boat of mightily unfortunate sightseers traveling on the river.Indeed, Chicago initially grew by treating its slow-moving river as an unfettered dumping area. Sewage and other waste was routinely funneled into the river, including carcasses and effluent from huge slaughterhouses that clustered beside the waterway – to the extent that a section of the river is still called “bubble creek” due to the gas given off by the rotting sludge on the riverbed.The river became so foul, causing deadly outbreaks of cholera and typhoid, that the city took the extraordinary step in 1900 of reversing the river’s flow by creating a system of canals and locks, to avoid Chicago’s source of drinking water in Lake Michigan becoming poisoned. Today, the 156-mile (265km) river meanders from Lake Michigan through Chicago so its water ultimately empties into the Gulf of Mexico.“We treated the river like it was part of the sewer system, which haunted us,” said Margaret Frisbie, the executive director of Friends of the Chicago River. Riverside buildings typically didn’t even have windows overlooking what was known as “the stinking river”, with the ribbon of water shunned as part of Chicago’s civic fabric.“Until just a few years ago people would’ve thought it would be outrageous to jump into it,” Frisbie said. When Friends of the Chicago River formed in 1979 with a vision to restore the ecological function of a river that could be enjoyed by people and wildlife alike, “people thought we were crazy,” she said.Yet the 1970s was a seminal decade for environmental protection in the US, with the passage of the Clean Water Act and the creation of the Environmental Protection Agency (EPA) – bringing new restrictions on pollution dumped into rivers, streams and lakes. Where once American rivers were so toxic they could catch fire, a new era had begun that would allow US cities to think more affectionately of their foundational waterways.In Chicago, the slaughterhouses shut down, new sewage and storm water infrastructure was built and teams of volunteers, as they do to this day, toiled to clean up trash.Dozens of species of fish returned, as did beavers and snapping turtles such as Chonkosaurus, an enormous, locally famous specimen sometimes seen lounging by the river.In 2016, a riverside public pathway was completed to knit the downtown area to its adjacent water, allowing Chicagoans in new bars and restaurants to gaze upon a river that is no longer a fetid soup, a place clean enough that people can now swim in it. On 12 September, it was announced that Friends of the Chicago River won an international prize in recognition of the river’s transformation.“So many people are on rental boats on the river these days – it’s heaving with people,” Frisbie said. “People want to work near the river, live near it, be on it. It’s remarkable to see people have that connection with it again.“This swim is emblematic of all the work we’ve done over the past 50 years to improve our rivers. It shows you can change the destiny of any natural resource and do some good. It feels that’s something we need right now.”America’s rivers may now increasingly be places of scenic recreation rather than industrial sacrifice zones, but this does depend on the vicissitudes of politics. The Trump administration is narrowing the application of the Clean Water Act, which helped ensure healthier rivers, and is similarly weakening rules on what coal plants and factories can dump in waterways. The bad old days may be a thing of the past, but ongoing progress isn’t guaranteed.“If the federal government retreats from enforcement, things could slide backwards,” Frisbie said. “It’s incumbent on cities, countries and states to be vigilant. Our river is beloved now – people want to use it, wildlife needs it, we need it. We want to maintain that rather than see it roll back.”On Sunday, though, few swimmers were mulling such weighty topics as they lined up in robes, serenaded by the skirl of the Chicago police department’s bagpipes and drum, before stripping and vaulting into the river, bobbling flotation devices tethered to their waists.Organizers had zealously tested the water in the weeks before the event, finding that the river was consistently safe in terms of EPA standards on fecal coliform – essentially, poo in the water. The river was scanned, too, for any potential obstructions to the swimmers.Among the participants for the first river swim in 98 years – all strictly vetted to ensure they could complete the course – was Olivia Smoliga, who grew up in the Chicago suburbs and went on to win a gold medal in backstroke at the 2016 Olympic games.Open water swimming is a different beast to the lanes of a pool, but Smoliga’s competitive spirit compelled her to speed around the river loop, even though it was not intended to be a race.“You have people throwing elbows there – you have to watch out for fingernail length, everything,” she said. “The fact they were able to clean up the river and do such great work, to have this full on race happen, is trippy. But it’s really cool.”

Group participates in previously unthinkable mile-long swim after US made key progress to clean polluted riversHundreds of people plunged into the Chicago River’s chilly waters on Sunday as part of the first organized swim in the river for nearly 100 years, a previously unthinkable act in what was once one of the most befouled waterways in the world.About 300 people, some wearing wetsuits, jumped into the Chicago River for a mile-long looping swim on an early, overcast midwest morning, a feat made possible by the often unseen but crucial progress the US has made in the past half century in cleaning its rivers of toxic pollution. Continue reading...

Hundreds of people plunged into the Chicago River’s chilly waters on Sunday as part of the first organized swim in the river for nearly 100 years, a previously unthinkable act in what was once one of the most befouled waterways in the world.

About 300 people, some wearing wetsuits, jumped into the Chicago River for a mile-long looping swim on an early, overcast midwest morning, a feat made possible by the often unseen but crucial progress the US has made in the past half century in cleaning its rivers of toxic pollution.

“It’s overwhelming to see this happen, it’s unbelievable to see swimmers swim past us now,” said Doug McConnell, the main organizer of the event.

McConnell, a Chicago area native and co-founder of A Long Swim, had been pushing the city’s leadership for more than a decade to allow a swim in the river, the first such event since 1927, having witnessed the blossoming urban river swimming movement take hold in cities such as Paris, Munich and Amsterdam.

“Seeing that really planted a seed, and we are thrilled we are finally doing this and that it has got global attention – we had applications across the US and 13 countries,” said McConnell, who hopes this will become an annual event and spread to other US cities.

McConnell didn’t leap into the water on Sunday but is an accomplished long-distance swimmer, having traversed the English Channel, which he recalls as “14 hours of getting slapped around”, and swam around the island of Manhattan, all in aid of amyotrophic lateral sclerosis (ALS) fundraising.

“I think the water conditions will surprise people because it will be cleaner than they expect,” he said. “The psychology of so many Chicagoans was that the river is untouchable – this isn’t true and we are proving this today.

“My grandfather grew up in Chicago and I think what his reaction to all of this would be because the river had an absolutely toxic reputation then. It was repulsive, absolutely untouchable.”

The Chicago River has a long history of being meddled with. Each year it is dyed green for St Patrick’s Day and, infamously, in 2004 the tour bus of Dave Matthews Band released 800lbs (363kg) of human waste through a bridge grate that landed on top of a boat of mightily unfortunate sightseers traveling on the river.

Indeed, Chicago initially grew by treating its slow-moving river as an unfettered dumping area. Sewage and other waste was routinely funneled into the river, including carcasses and effluent from huge slaughterhouses that clustered beside the waterway – to the extent that a section of the river is still called “bubble creek” due to the gas given off by the rotting sludge on the riverbed.

The river became so foul, causing deadly outbreaks of cholera and typhoid, that the city took the extraordinary step in 1900 of reversing the river’s flow by creating a system of canals and locks, to avoid Chicago’s source of drinking water in Lake Michigan becoming poisoned. Today, the 156-mile (265km) river meanders from Lake Michigan through Chicago so its water ultimately empties into the Gulf of Mexico.

“We treated the river like it was part of the sewer system, which haunted us,” said Margaret Frisbie, the executive director of Friends of the Chicago River. Riverside buildings typically didn’t even have windows overlooking what was known as “the stinking river”, with the ribbon of water shunned as part of Chicago’s civic fabric.

“Until just a few years ago people would’ve thought it would be outrageous to jump into it,” Frisbie said. When Friends of the Chicago River formed in 1979 with a vision to restore the ecological function of a river that could be enjoyed by people and wildlife alike, “people thought we were crazy,” she said.

Yet the 1970s was a seminal decade for environmental protection in the US, with the passage of the Clean Water Act and the creation of the Environmental Protection Agency (EPA) – bringing new restrictions on pollution dumped into rivers, streams and lakes. Where once American rivers were so toxic they could catch fire, a new era had begun that would allow US cities to think more affectionately of their foundational waterways.

In Chicago, the slaughterhouses shut down, new sewage and storm water infrastructure was built and teams of volunteers, as they do to this day, toiled to clean up trash.

Dozens of species of fish returned, as did beavers and snapping turtles such as Chonkosaurus, an enormous, locally famous specimen sometimes seen lounging by the river.

In 2016, a riverside public pathway was completed to knit the downtown area to its adjacent water, allowing Chicagoans in new bars and restaurants to gaze upon a river that is no longer a fetid soup, a place clean enough that people can now swim in it. On 12 September, it was announced that Friends of the Chicago River won an international prize in recognition of the river’s transformation.

“So many people are on rental boats on the river these days – it’s heaving with people,” Frisbie said. “People want to work near the river, live near it, be on it. It’s remarkable to see people have that connection with it again.

“This swim is emblematic of all the work we’ve done over the past 50 years to improve our rivers. It shows you can change the destiny of any natural resource and do some good. It feels that’s something we need right now.”

America’s rivers may now increasingly be places of scenic recreation rather than industrial sacrifice zones, but this does depend on the vicissitudes of politics. The Trump administration is narrowing the application of the Clean Water Act, which helped ensure healthier rivers, and is similarly weakening rules on what coal plants and factories can dump in waterways. The bad old days may be a thing of the past, but ongoing progress isn’t guaranteed.

“If the federal government retreats from enforcement, things could slide backwards,” Frisbie said. “It’s incumbent on cities, countries and states to be vigilant. Our river is beloved now – people want to use it, wildlife needs it, we need it. We want to maintain that rather than see it roll back.”

On Sunday, though, few swimmers were mulling such weighty topics as they lined up in robes, serenaded by the skirl of the Chicago police department’s bagpipes and drum, before stripping and vaulting into the river, bobbling flotation devices tethered to their waists.

Organizers had zealously tested the water in the weeks before the event, finding that the river was consistently safe in terms of EPA standards on fecal coliform – essentially, poo in the water. The river was scanned, too, for any potential obstructions to the swimmers.

Among the participants for the first river swim in 98 years – all strictly vetted to ensure they could complete the course – was Olivia Smoliga, who grew up in the Chicago suburbs and went on to win a gold medal in backstroke at the 2016 Olympic games.

Open water swimming is a different beast to the lanes of a pool, but Smoliga’s competitive spirit compelled her to speed around the river loop, even though it was not intended to be a race.

“You have people throwing elbows there – you have to watch out for fingernail length, everything,” she said. “The fact they were able to clean up the river and do such great work, to have this full on race happen, is trippy. But it’s really cool.”

Read the full story here.
Photos courtesy of

The U.S. is committed to cleaning up Tijuana River pollution. Will California follow through?

San Diego leaders are calling on California to take stronger action to address the ongoing environmental crisis caused by sewage and industrial pollution flowing from the Tijuana River.

In summary San Diego leaders are calling on California to take stronger action to address the ongoing environmental crisis caused by sewage and industrial pollution flowing from the Tijuana River. As Tijuana River sewage has contaminated neighborhoods in southern San Diego County, the federal government has pledged two-thirds of a billion to clean it up.  Now local lawmakers are calling on California to step up the fight against cross-border pollution, and one introduced a bill this week to revisit air quality standards for noxious gas from the river. State Sen. Catherine Blakespear held a joint hearing of the Senate Environmental Quality Committee and the Assembly Environmental Safety and Toxic Materials Committee in San Diego Thursday to explore how the state can help solve the problem. “California has long been a national leader in environmental stewardship and policy making,” Blakespear said at the hearing. “But what is happening in the Tijuana River Valley is an international environmental disaster that undermines everything that California stands for.” The hearing at Scripps Institution of Oceanography in La Jolla, convened scientists and civic leaders to discuss how failed infrastructure, industrial waste and decades of neglect created the environmental disaster, and what it will take to fix it. “Due to its international nature, we know the federal government must take the lead,” Blakespear said. “Still, there is much that the state and local governments can do.” After decades of stalemate, action on Tijuana River pollution is speeding up. The U.S. Environmental Protection Agency on Monday announced a new agreement with Mexico to plan for wastewater infrastructure to accommodate future population growth in Tijuana. On Wednesday State Sen. Steve Padilla introduced a bill to update state standards for hydrogen sulfide, a noxious gas with a rotten egg smell that’s produced by sewage in the river. Residents in the area complain of headaches, nausea and other ailments when hydrogen sulfide reaches high concentrations. The bill would require the California Air Resources Board to review the half-century-old standard and tighten it if needed. State Lawmakers also aim to improve conditions for lifeguards and other workers exposed to pollution, and hold American companies accountable for their role in contamination of the river. County officials will conduct an extensive health study to measure effects of Tijuana River pollution, and are making plans to remove a pollution hot spot in Imperial Beach. Ongoing, chronic pollution Sewage spills in south San Diego County became common in the early 2000s, sickening swimmers and surfers at local beaches. Then the aging wastewater plants failed, sending hundreds of millions of gallons of raw sewage into the ocean. Last year Scripps researchers found that the river is harming nearby communities by releasing airborne chemicals including hydrogen sulfide gas, which smells like rotten eggs. “The sewage flowing into San Diego County’s Coastline is poisoning our air and water, harming public health, closing beaches, and killing marine life,” Blakespear said.  San Diego officials have successfully lobbied for federal investment to upgrade aging wastewater treatment plants. They also introduced faster water quality testing and surveyed residents to understand health issues.  Paula Stigler Granados, a professor of public health at San Diego State University, said studies of people living near the Tijuana River found “more scary stuff,”  with 45% experiencing health problems, 63% saying pollution disrupted their work or school and 94% of respondents reporting sewage smells at home.  “Children are waking up sick in the middle of the night,” she said. “This is an ongoing, chronic exposure, not a one-time event.” A section of the Tijuana River next to Saturn Boulevard in San Diego on Nov. 21, 2025. Photo by Adriana Heldiz, CalMatters Water samples revealed industrial chemicals, methamphetamine, fentanyl, restricted pesticides, pharmaceuticals and odor-causing sulfur compounds, she said. “This is absolutely a public health emergency,” Stigler Granados said. “I do think it is the biggest environmental crisis we have in the country right now.” That sense of urgency isn’t universal. Last year Gov. Gavin Newsom declined requests by San Diego officials to declare a state of emergency over the border pollution problem, saying it “would have meant nothing.” Over the last two years State Sen. Steve Padilla has introduced legislation to fund improvements to wastewater treatment, limit landfill construction in the Tijuana River Valley and require California companies to report waste discharges that affect water quality in the state, but those bills failed. He said the problem is overlooked in this border area, with its low-income and working class population. “This is one of the most unique and acute environmental crises in all of North America,” Padilla said. “It is underappreciated simply because of where it is occurring.”  Tijuana River solutions This year the U.S. repaired the failing South Bay International Wastewater Treatment Plant and expanded its capacity from 25 million to 35 million gallons of wastewater per day. In April, Mexico repaired its Punta Bandera plant near the border, reducing sewage flows into the ocean. But the Imperial Beach shoreline has remained closed for three years, and residents still complain of headaches, nausea, eye irritation and respiratory ailments from airborne pollution. That problem is worst at a point known as the Saturn Blvd. hot spot in Imperial Beach, where flood control culverts churn sewage-tainted water into foam, spraying contaminants into the air. “When the water is polluted you can close the beach,” said Kim Prather, an atmospheric chemist at Scripps, who identified the airborne toxins. “But you can’t tell people not to breathe.” Community members feel forgotten by state leaders as they face chronic air pollution and years of closed beaches because of contaminated wastewater from the Tijuana River, said Serge Dedina, executive director of the environmental organization WildCoast and former Imperial Beach mayor. “What they say is ‘how come California doesn’t care about us?’” Dedina said. As federal authorities plan expansions to the South Bay International Wastewater Treatment Plant that will boost its capacity to 50 million gallons per day, local and state leaders have their own action plan. A top priority for Aguirre is removing culverts at the Saturn Blvd. hot spot that cause airborne pollution. “That’s low hanging fruit that we don’t need to depend on the federal government to fix,” Aguirre said. She hopes to get funding for that project from Proposition 4, the state environmental bond that voters passed earlier this year. It dedicates $50 million to cleaning up degraded waterways, including the Tijuana River and New River, which flows into the Salton Sea.  The county is also planning a health study that would include physiological measurements to determine the health effects of Tijuana River pollution. “What we’re working on is how are we going to take real, hard medical data and follow a cohort of people who live in this environment, so we can understand what is happening in their bodies,” Aguirre said. “What is happening to children and seniors? What is in their bloodstreams?” San Diego County has distributed about 10,000 home air purifiers to households near the Tijuana River, but Aguirre wants to provide devices to all 40,000 homes in the affected area. Dedina said his organization is removing waste tires that are exported to Mexico and wash back into the Tijuana River Valley. “My lesson here is we need to stop the sediment, the tires, the trash, the toxic waste, the sewage,” he said. In addition to his bill updating hydrogen sulfide standards, Padilla said he’s exploring legislation to regulate pollution created by California companies operating through maquiladoras in Mexico. He wants to work with Mexico “to put some pressure on them to basically clamp down on American companies that are licensed to do business here in California. Blakespear said she wants to protect lifeguards and other public workers exposed to pollution. Whether the solution is creating environmental standards for international businesses or funding costly infrastructure, lawmakers acknowledge that the binational nature of the problem makes it tough to solve. “The complexity around it being an international issue and being a federal issue has added to the difficulties about who should act,” Blakespear said.

Air Pollution Linked To Autoimmune Diseases Like Lupus, Arthritis, Experts Say

By Dennis Thompson HealthDay ReporterWEDNESDAY, Dec. 17, 2025 (HealthDay News) — Air pollution might play a role in people’s risk for developing...

By Dennis Thompson HealthDay ReporterWEDNESDAY, Dec. 17, 2025 (HealthDay News) — Air pollution might play a role in people’s risk for developing autoimmune diseases like lupus and rheumatoid arthritis, a new study says.People exposed to particle air pollution had higher levels of anti-nuclear antibodies, a characteristic marker of autoimmune rheumatic diseases, researchers recently reported in the journal Rheumatology.“These results point us in a new direction for understanding how air pollution might trigger immune system changes that are associated with autoimmune disease,” senior researcher Dr. Sasha Bernatsky, a professor of medicine at McGill University in Canada, said in a news release.For the study, researchers collected blood samples from more than 3,500 people living in Canada’s Ontario region, looking at their levels of anti-nuclear antibodies.Anti-nuclear antibodies are produced by the immune system as part of an autoimmune disease. These antibodies mistakenly target the body’s own cells and tissues.The team compared those blood test results to people’s average exposure to particle pollution, based on air pollution tracking data for their home address.People with the highest levels of exposure to air pollution were 46% to 54% more likely to have high levels of anti-nuclear antibodies, the study found.Fine particle pollution involves particles that are 2.5 microns wide or smaller, according to the U.S. Environmental Protection Agency. By comparison, a human hair is 50 to 70 microns wide.“These fine particles in air pollution are small enough to reach the bloodstream, potentially affecting the whole body,” Bernatsky said.She stressed that such pollution is not just a problem for big cities.“Air pollution is often seen as an urban problem caused by traffic, but rural and suburban areas experience poor air quality too,” Bernatsky said, pointing to wildfires that choke the sky with smoke.The results underscore why standards to reduce air pollution are important, she concluded.“Even though air quality is overall better in Canada than in many other countries, research suggests there is no safe level, which is why Canadian policymakers need research like ours,” Bernatsky said.SOURCES: McGill University, news release, Dec. 15, 2025; Rheumatology, Oct. 22, 2025Copyright © 2025 HealthDay. All rights reserved.

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