Which Chicago-caught fish you can safely eat
Yes, you can eat fish from Lake Michigan and the Chicago River, but not much. And you should lay off the channel catfish.
The latest: The Illinois Department of Public Health just released its latest fish eating advisory based on contaminants in the water including heavy metals and "forever chemicals."
So we've created a handy clip-and-save guide on some of the most popular local sport fish and how many you can eat before it becomes a health risk.
Dive in: Local smelt lovers (like Monica) will be sad to learn that Illinois officials advise limiting consumption to one meal a week due to contaminants in Lake Michigan.
What they're saying:"While there is no known immediate health hazard from eating contaminated fish from any Illinois water body, there are concerns about effects of long-term exposure to polychlorinated biphenyl (PCB), per- and polyfluoroalkyl substances (PFAS), and methylmercury in fish," IDPH officials said in a statement.
Zoom in: IDPH issued additional limits, due to PFAS and mercury levels, for Cedar Lake, Chaminwood Lake, Dongola Lake, Dutchman Lake, the Illinois River, Wolf Lake and Indian Creek.
But advisories were relaxed for the Big Muddy River, Lake Bracken, Monee Reservoir and Randolph County Lake.
Threat level: State officials advise all women who are nursing, pregnant or may become pregnant, and children under 15 to limit consumption of predatory fish (e.g., bass, walleye, salmon) to no more than once a week across Illinois, due to mercury concerns.
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2 hours ago
- Yahoo
Firefighting foams contain toxic PFAS. Could soybeans be the answer?
Jeff King has served on the volunteer fire department in Corydon, Kentucky, for over 30 years. He is well aware of the dangers of the job — including one that may be hiding in the supplies he and his crew use to keep others safe. Many of the foams firefighters spray to extinguish blazes contain per- and polyfluoroalkyl substances, or PFAS. Known as 'forever chemicals,' PFAS are a class of human-made chemicals that repel water and oil; it's this quality that makes them effective at battling tough-to-put-out fires, like those started with diesel fuel. The chemicals are also tied to a host of human health problems, from reproductive issues to high cholesterol to certain types of cancer. King admits that some of the foams he's used over his career 'may or may not be good for us.' That's why he visited Dalton, Georgia, last year to meet with representatives from Cross Plains Solutions, a company that developed a PFAS-free firefighting foam made from soybeans. After seeing the foam in action, he was impressed. 'The product performs just fantastic,' said King. And because it has been certified as PFAS-free, he figured, 'there's nothing in it that could potentially make me or any other firefighter in this country that uses it sick. I just thought, 'Wait a minute, this is almost a no-brainer.'' There's another upside for King in all of this: In his day job, he's a soybean farmer himself. A new application for the humble soybean would be good for business. The search to find a PFAS-free firefighting foam is relatively new, as a growing body of research illuminates the harmful impact that these chemicals have on humans and the environment. Soybean farmers have presented their crop as a surprising solution to this problem. Although more research and development are needed to ensure soy-based firefighting foam holds up under the toughest circumstances, the product is catching the attention of local fire departments. 'There is a good bit of interest,' said Alan Snipes, CEO of Cross Plains Solutions. He estimated that his company's product, aptly named SoyFoam, is now being used in 50 fire departments around the country, mostly in the Midwest. That's not a coincidence: Snipes pointed out that many rural fire departments in the middle of the country depend on volunteer firefighters. 'A lot of the volunteers are farmers, and a lot of the farmers grow soybeans,' he said. Cross Plains began to look into creating a PFAS-free, soy-based firefighting foam after being approached by the United Soybean Board. Snipes was first in touch with the board more than 30 years ago, when he worked in the carpet industry and started using soy-based compounds to manufacture backing for commercial carpets. He started Cross Plain Solutions about 13 years ago to produce a bio-based cooling gel for mattresses. Then, three years ago, the United Soybean Board offered the company funding to develop and test a biodegradable firefighting foam. The board, whose members are appointed by the U.S. Department of Agriculture, exists to collect one-half of one percent of the market price of every bushel of soybeans sold by U.S. farmers. This congressionally mandated process, called the soybean checkoff program, is used to fund research into new markets for soybeans. The United Soybean Board partners with both public and private actors, like universities and corporations, to fund research into and commercialization of new soybean uses. Often, this looks like investing in more sustainable alternatives to fossil fuels — like using soybean oil as a petroleum replacement in tires, straws, and shoes. In a partnership like the one with Cross Plains, the checkoff program is hoping to create a business opportunity that might help farmers sell more bushels down the line. The result is a 'win-win,' said Philip Good, chair of the United Soybean Board. After King returned back home to Kentucky, his fire department voted to exclusively use SoyFoam going forward; according to King, it was the first in the country to do so. SoyFoam is not unique. There are other alternatives to PFAS-based firefighting foams on the market with different formulations and applications, said Danielle Nachman, a senior staff scientist at the Johns Hopkins University Applied Physics Laboratory. 'They can span all kinds of chemistry,' said Nachman. Some are bio-based, like a gel made with canola oil, while others try to replicate the chemical properties of PFAS without relying on fluorinated compounds. The big hurdle for SoyFoam and other PFAS-free firefighting foams is meeting requirements set by the Department of Defense for military firefighting and training activity. PFAS-containing firefighting foams were first patented by the United States Navy in the 1960s, following a series of devastating fires on aircraft carriers and other ships. In the 1970s, virtually every U.S. military base began using these foams for emergencies and training exercises — leading to dangerous contamination in the surrounding areas. 'The majority of the headache when it comes to PFAS [in firefighting foams] is the military application,' said Mohamed Ateia Ibrahim, an adjunct assistant professor of chemical and biomolecular engineering at Rice University, 'because of all of the military bases and the training activities.' The Department of Defense has been working to transition away from firefighting foams that contain PFAS — but SoyFoam has a ways to go before it could be fully embraced by the military. The Pentagon has not tested Cross Plain Solutions' product, but Snipes said the agency has encouraged the company to seek further funding to continue its R&D. The Department of Defense didn't respond to Grist's request for comment. Ibrahim said he supports the development of bio-based, PFAS-free foams, but that companies need to be more transparent about what exactly goes into their products. 'We need more clarification about the other components and whether they are, as a whole, really better or not' than PFAS-based firefighting foams, said Ibrahim. According to Snipes, SoyFoam is made up of things you could find in your pantry — although when asked to specify what those components are, he demurred, calling the information proprietary. This story was originally published by Grist with the headline Firefighting foams contain toxic PFAS. Could soybeans be the answer? on Jun 23, 2025.
Yahoo
3 days ago
- Yahoo
Drinking water map shows where toxic ‘forever chemicals' are found in the UK
Traces of a chemical that researchers fear could harm human reproduction have been found in dozens of Britain's rivers, a new study has warned. Researchers from York University found trifluoroacetic acid (TFA) in 98% of locations in 32 rivers in England, Wales, Scotland and Northern Ireland. TFA is one of a family of more than 14,000 man-made chemicals known as perfluoroalkyl and polyfluoroalkyl substances (PFAs), which have been used since the 1940s in everything from waterproof clothing to non-stick frying pans, as well as cosmetics and food packaging. The chemicals can accumulate in people's bodies (as well as in the water we drink) and can lead to serious health issues including cancer, liver damage and harm to unborn children. The UK government launched an inquiry this year into the issue - but campaigners say not enough is being done. Natalie Sims, from the Royal Society of Chemistry, told Yahoo News: 'There is more that could be being done, and that is why we are calling for action.' The Royal Society of Chemistry has mapped levels of the chemicals in Britain's drinking waters, and is calling for the public to take action to raise the issue. 'The public can be really powerful, and I think we have seen that when we look at tackling sewage overflows, that's really been pushed up the government agenda, because the public is also pushing for it," Sims says. 'That's why we really want to take action now, and that's why there's been much more push for it from organisations like ourselves or others. In addition to developing alternative materials, we urgently need stronger, more robust controls to prevent further pollution and reduce our exposure to harmful substances in the environment.' PFAs are a group of thousands of chemicals that don't occur in nature and are extremely hard to get rid of. They also also toxic, even in small quantities. They have been used in manufacturing and consumer products since the 1940s. 'We've used them so extensively, really since the 1940s they found our way in so many different consumer products," Sims explains. "For example, in your waterproof coat, anything waterproofing, school children's clothing, anything stain resistant. PFAs have some desirable properties, and are so good at what they do in terms of that heat resistance, that water and oil resistance, stain resistance, durability, often a lot of the things that makes it very useful in products. 'Because they're so persistent, they obviously found their way into the environment, into our food, into our water. They are also used in jet engines, medical devices, refrigeration systems, the construction industry and electrical devices. In the environment, they can last for extremely long periods: hundreds or even thousands of years. They also accumulate in human bodies. 'Forever chemicals' have been phased out of some consumer products - but are still used in products such as non-stick frying pans and some packaging, although manufacturers tend to be reluctant to say exactly where they are used. The dangers attached to PFAs often comes when they are used industrially, or when products containing PFAs are disposed of inadequately, meaning they enter the water supply. In the UK, PFAs are most likely to be found in water near industrial sites including airports and areas that produce products which use PFAs. The Royal Society of Chemistry warns that contamination is likely near landfill sites where liquid contaminated with PFAs can leak out of the site, or near incinerators which often are not hot enough to fully burn chemicals can also be found near where firefighting foam is routinely used, including airports, military sites and fire-training areas. Some airports, including Heathrow, have already switched to using foam which does not contain PFAs. Wastewater sites can also leech PFAs into the water. The chemicals have been linked to serious health issues including liver damage, some cancers and harm to unborn children, thyroid disease and fertility issues. Large-scale studies have shown that PFAs in drinking water correlates with increased levels of cancer in multiple parts of the body. A review in the journal eBioMedicine linked PFAs exposure to decreased efficiency in vaccines, premature birth, increased severity of COVID-19, along with cancer, reduced immune function and developmental delays in children. Water companies in England and Wales must monitor and regulate 48 types of PFAs, despite there being thousands of varieties, with many remaining untested. But this Drinking Water Inspectorate ruling actually goes further than EU legislation. Individual PFAs concentrations in drinking water cannot exceed 100 nanograms per litre (ng/L). This is 10 times higher than the Drinking Water Inspectorate's own 'low risk' threshold of 10 ng/L. In the US, there are limits of 4 ng/L for each of PFOS and PFOA, two of the most common PFAs, and the EU states that 20 widespread PFAs must collectively not exceed 100 ng/L. The Royal Society of Chemistry has called for new limits on the amounts of PFAs permissible in drinking water. Specifically the RSC has called for a new limit of 10 ng/L for individual PFAs. The RSC has also called for stricter controls over the sources of PFAs including in industrial discharges, with a national chemicals regulator to monitor and regulate discharges. Sims says: 'An RSC survey of more than 4,000 UK adults, carried out by YouGov in August showed nine in ten Britons believe it's 'very important' to keep PFAS out of our food, water and environment. The public do want action on this, which I think is really powerful when it comes to speaking to the government. 'In terms of industry, having them push to develop alternatives, because they've had these chemicals that they've been allowed to use for so long, in terms of because they're so good at what they do, it's trying to transition that away into more, safer and sort of sustainable alternatives. Sims says that it's also vital that British people have a clearer picture of the chemicals in the water they drink. She says: 'PFAS are contained in many products and ingredients that are made or imported to the UK for use across many industries. However, we do not have a full picture of how PFAS enter and move within the supply chain. 'It's likely that the exposure you have on the everyday is going to be quite low, but it's that long term build up where, for one thing, it can be really challenging to pinpoint where those adverse effects could come from.'
Yahoo
3 days ago
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Drinking water map shows where toxic ‘forever chemicals' are found in the UK
Traces of a chemical that researchers fear could harm human reproduction have been found in dozens of Britain's rivers, a new study has warned. Researchers from York University found trifluoroacetic acid (TFA) in 98% of locations in 32 rivers in England, Wales, Scotland and Northern Ireland. TFA is one of a family of more than 14,000 man-made chemicals known as perfluoroalkyl and polyfluoroalkyl substances (PFAs), which have been used since the 1940s in everything from waterproof clothing to non-stick frying pans, as well as cosmetics and food packaging. The chemicals can accumulate in people's bodies (as well as in the water we drink) and can lead to serious health issues including cancer, liver damage and harm to unborn children. The UK government launched an inquiry this year into the issue - but campaigners say not enough is being done. Natalie Sims, from the Royal Society of Chemistry, told Yahoo News: 'There is more that could be being done, and that is why we are calling for action.' The Royal Society of Chemistry has mapped levels of the chemicals in Britain's drinking waters, and is calling for the public to take action to raise the issue. 'The public can be really powerful, and I think we have seen that when we look at tackling sewage overflows, that's really been pushed up the government agenda, because the public is also pushing for it," Sims says. 'That's why we really want to take action now, and that's why there's been much more push for it from organisations like ourselves or others. In addition to developing alternative materials, we urgently need stronger, more robust controls to prevent further pollution and reduce our exposure to harmful substances in the environment.' PFAs are a group of thousands of chemicals that don't occur in nature and are extremely hard to get rid of. They also also toxic, even in small quantities. They have been used in manufacturing and consumer products since the 1940s. 'We've used them so extensively, really since the 1940s they found our way in so many different consumer products," Sims explains. "For example, in your waterproof coat, anything waterproofing, school children's clothing, anything stain resistant. PFAs have some desirable properties, and are so good at what they do in terms of that heat resistance, that water and oil resistance, stain resistance, durability, often a lot of the things that makes it very useful in products. 'Because they're so persistent, they obviously found their way into the environment, into our food, into our water. They are also used in jet engines, medical devices, refrigeration systems, the construction industry and electrical devices. In the environment, they can last for extremely long periods: hundreds or even thousands of years. They also accumulate in human bodies. 'Forever chemicals' have been phased out of some consumer products - but are still used in products such as non-stick frying pans and some packaging, although manufacturers tend to be reluctant to say exactly where they are used. The dangers attached to PFAs often comes when they are used industrially, or when products containing PFAs are disposed of inadequately, meaning they enter the water supply. In the UK, PFAs are most likely to be found in water near industrial sites including airports and areas that produce products which use PFAs. The Royal Society of Chemistry warns that contamination is likely near landfill sites where liquid contaminated with PFAs can leak out of the site, or near incinerators which often are not hot enough to fully burn PFAs. The chemicals can also be found near where firefighting foam is routinely used, including airports, military sites and fire-training areas. Some airports, including Heathrow, have already switched to using foam which does not contain PFAs. Wastewater sites can also leech PFAs into the water. The chemicals have been linked to serious health issues including liver damage, some cancers and harm to unborn children, thyroid disease and fertility issues. Large-scale studies have shown that PFAs in drinking water correlates with increased levels of cancer in multiple parts of the body. A review in the journal eBioMedicine linked PFAs exposure to decreased efficiency in vaccines, premature birth, increased severity of COVID-19, along with cancer, reduced immune function and developmental delays in children. Water companies in England and Wales must monitor and regulate 48 types of PFAs, despite there being thousands of varieties, with many remaining untested. But this Drinking Water Inspectorate ruling actually goes further than EU legislation. Individual PFAs concentrations in drinking water cannot exceed 100 nanograms per litre (ng/L). This is 10 times higher than the Drinking Water Inspectorate's own 'low risk' threshold of 10 ng/L. In the US, there are limits of 4 ng/L for each of PFOS and PFOA, two of the most common PFAs, and the EU states that 20 widespread PFAs must collectively not exceed 100 ng/L. The Royal Society of Chemistry has called for new limits on the amounts of PFAs permissible in drinking water. Specifically the RSC has called for a new limit of 10 ng/L for individual PFAs. The RSC has also called for stricter controls over the sources of PFAs including in industrial discharges, with a national chemicals regulator to monitor and regulate discharges. Sims says: 'An RSC survey of more than 4,000 UK adults, carried out by YouGov in August showed nine in ten Britons believe it's 'very important' to keep PFAS out of our food, water and environment. The public do want action on this, which I think is really powerful when it comes to speaking to the government. 'In terms of industry, having them push to develop alternatives, because they've had these chemicals that they've been allowed to use for so long, in terms of because they're so good at what they do, it's trying to transition that away into more, safer and sort of sustainable alternatives. Sims says that it's also vital that British people have a clearer picture of the chemicals in the water they drink. She says: 'PFAS are contained in many products and ingredients that are made or imported to the UK for use across many industries. However, we do not have a full picture of how PFAS enter and move within the supply chain. 'It's likely that the exposure you have on the everyday is going to be quite low, but it's that long term build up where, for one thing, it can be really challenging to pinpoint where those adverse effects could come from.'
