PFAS

January 31, 2025

FDA must set limits on PFAS in food, lawsuit says

By Shannon Kelleher

US regulators are failing to address concerns about toxic PFAS chemicals in foods despite having the scientific tools to do so, according to a lawsuit filed by an environmental group in Tucson, Arizona.

The lawsuit, filed on Jan. 24 in the US District Court for the District of Arizona, follows the submission of a legal petition filed in November 2023 by the Tucson Environmental Justice Task Force that asked the Food and Drug Administration (FDA) to establish limits for certain per- and polyfluoroalkyl substances (PFAS) the agency has found in blueberries, lettuce, milk, salmon and other foods. The group wants the FDA to take action to remove products from grocery store shelves if PFAS residues are found at the minimum level of detection possible.

“We’re asking [the FDA] to do something that they are required to do under the law, that they failed to do under the law,” said Sandra Daussin, attorney for the plaintiffs and a plaintiff herself.

Under its own regulations, the FDA is required to respond to petitions within 180 days, but the agency failed to address the petition after more than a year, an “arbitrary and capricious” delay, the complaint alleges.

PFAS are a class of thousands of chemicals used for decades across many industries. The chemicals have become ubiquitous in the environment, found in water, soil and the blood of animals and people around the globe. Many types of PFAS have been found to be health hazards, linked to disease and disability. The petition cites connections between seven types of PFAS and “serious life-threatening health effects,” including kidney and liver damage, cancer, neurotoxicity, immunotoxicity, and adverse reproductive effects.

The petitioners argue that in August 2023 the FDA developed a validated method detecting up to 30 PFAS chemicals in foods, and thus has an obligation to use that knowledge to set enforceable limits. The group wants the FDA to adjust those limits to be lower if methodology improves to detect smaller concentrations.

The FDA has been testing foods for PFAS contamination since 2019 but has found very little contamination.

January 23, 2025

Amid series of rapid-fire policy reversals, Trump quietly withdraws proposed limits on PFAS

By Shannon Kelleher

Amid a flurry of actions curtailing Biden’s environmental policies, the administration of newly inaugurated President Donald Trump this week withdrew a plan to set limits on toxic PFAS chemicals in industrial wastewater.

The draft rule, which the US Environmental Protection Agency (EPA) sent to the White House for review in June, was seen as a precedent-setting move by reducing allowable discharges of per- and polyfluoroalkyl substances (PFAS), a class of chemicals that have been linked to an array of health problems.

“It is abundantly clear that this action was taken to benefit the chemical industry – and every American will suffer for it,” said Kyla Bennett, director of science policy at the watchdog group Public Employees for Environmental Responsibility. “PFAS contamination is already a national health crisis, and this will force states to try and fill the regulatory void left by EPA’s failure. “

The decision to withdraw the draft rule came as Trump issued an executive order to freeze any new federal regulations pending review.

Though the initial rule would have applied to only about 13 facilities, almost 30,000 industrial sites have been identified as potential sources of PFAS in the environment, including drinking water sources, according to a 2021 analysis of EPA data by the nonprofit Environmental Working Group (EWG). And the EPA itself has identified more than 120,000 facility sites around the US where the agency says people may be exposed to PFAS.

The proposal’s withdrawal is a “devastating setback” that “not only delays establishing critical federal standards but also sends a dangerous message giving polluters a green light to continue poisoning our water and communities without fear of consequence,” Melanie Benesh, EWG vice president for government affairs, said in a statement. “It’s an unconscionable betrayal of the public’s health in favor of corporate interests.”

When asked about the move, an EPA spokesperson said it was “common transition procedures,” to pause major decisions, including a hold on new and pending regulations.

January 15, 2025

Millions of Americans exposed to unregulated chemicals in drinking water, study finds

By Shannon Kelleher

Almost 100 million people in the US may be exposed to unregulated industrial chemicals in their drinking water, with communities of color especially at risk, according to a new analysis of federal monitoring data for water systems across the country.

The study, published Wednesday in the journal Environmental Health Perspectives, analyzed data gathered by the US Environmental Protection Agency (EPA) from 2013 to 2015 for four types of unregulated chemicals, finding that 27% of those nearly 5,000 public water systems had detectable levels of at least one contaminant.

Overall, more than 97 million US residents were served by a public water system with detectable levels of the contaminants examined in the study.

The colorless, flammable solvent 1,4-dioxane was most pervasive, showing up in 22% of the public water systems, according to the study. The researchers also found the refrigerant HCFC-22, as well as a solvent called dichloroethane used in plastics production, and toxic per- and polyfluoroalkyl substances (PFAS) in about 4-6% of the water systems. The EPA data accounted for six types of PFAS, a category including thousands of chemicals: perfluorooctanoic acid (PFOA), perfluorononanoic acid (PFNA), perfluorohexane sulfonic acid (PFHxS), perfluoroheptanoic acid (PFHpA) and perfluorobutane sulfonic acid (PFBS).

Hispanic and Black populations are at especially high risk for exposure to unregulated chemicals in their drinking water, the authors reported. Public water systems with detectable levels of the contaminants served counties with higher proportions of Hispanic residents than those with no detections, for example, the authors said.

January 14, 2025

PFAS in sludge spread on farmland poses health risks, EPA report says

By Shannon Kelleher and Carey Gillam

US regulators on Tuesday added to growing concerns about the long-standing practice of using sewage sludge to fertilize farmland, releasing a report warning that chemicals contaminating the sludge pose heightened human health risks for cancer and other illnesses.

The Environmental Protection Agency (EPA) said two types of hazardous per- and polyfluoroalkyl substances (PFAS) widely found in sewage sludge, a byproduct of wastewater treatment, can contaminate the milk, eggs and meat that come from farm animals raised on agricultural land where the sludge has been applied. Those “exposure pathways” are among multiple ways in which people can be at risk, the EPA said.

The agency focused on perfluorooctane sulfonic acid (PFOS) and perfluorooctanoic acid (PFOA), two well-studied types of PFAS chemicals linked to testicular and kidney cancer as well as liver problems. The EPA last spring designated PFOS and PFOA as hazardous substances under the so-called Superfund law and announced the first legally enforceable limits for the two chemicals and four other types of PFAS in drinking water.

The EPA said that though the majority of US food crops are not grown with the use of sewage sludge as a soil conditioner or fertilizer, because of the “extreme persistence” of PFOA and PFOS in soils, land where sewage sludge was applied years ago may still be contaminated.

The agency’s draft risk assessment, which was made publicly available Jan. 14, said that “under certain scenarios and conditions,” land-applying or disposing of sewage sludge containing 1 part per billion (ppb) or more of PFOA or PFOS “could result in human health risks exceeding the agency’s acceptable thresholds for cancer and noncancer effects.”

January 6, 2025

Fluorinated drugs, a type of PFAS, widely contaminating US drinking water

By Douglas Main

New research suggests that fluorinated pharmaceuticals — a category that includes well-known medications such as Prozac and Flonase — are showing up in the water supply of millions of people. These drugs and their breakdown products are technically classified as being per- and polyfluoroalkyl substances (PFAS), also known as “forever chemicals,” which as a chemical class is the subject of worldwide health concern.

A study published January 6 in Proceedings of the National Academy of Sciences found that the bulk of PFAS entering and exiting wastewater treatment plants is made up of these fluorinated drugs. Notably, the researchers determined that the pharmaceuticals were largely not removed from the water by conventional wastewater treatment practices.

This pharmaceutical material “doesn’t get treated in the wastewater treatment plant, and it doesn’t break down,” said Bridger Ruyle, study co-author and researcher at New York University. “And we know [these chemicals] can be re-entering drinking water supplies.”

The study estimates that this material contaminates the water supply of around 23 million Americans, Ruyle said.

These drugs enter wastewater after being excreted by people. About 50% of drinking water utilities are located downstream of a wastewater outflow plant and regularly use varying amounts of this water.

A slight majority of this material was made up of only four drugs and one of their metabolites: the arthritis medication Celecoxib (Celebrex); flecainide (Tambocor), prescribed for arrhythmia; maraviroc (Selzentry), and one of its metabolites, used to treat HIV; and sitaglipt (Januvia), a diabetes drug.

“We don’t know that much about what the exposures or health risks are” for those drinking small concentrations of this material, Ruyle said.

November 15, 2024

Can anything be done to Trump-proof the environment?

By Douglas Main

As advocacy groups brace for a new administration under President-elect Donald Trump —fearing a slew of deregulation and policy changes that would undermine a range of environmental health measures —some are pondering ways to try to “Trump-proof” the planet.

Trump racked up the worst environmental record of any president during his first term, according to several advocacy organizations, and many worry his second time around will be even worse.

They expect across-the-board cuts to federal budgets and staff, including the Environmental Protection Agency, Department of Interior, and other agencies that play key roles in protecting human and environmental health. And they forecast efforts to reverse environmentally friendly policies protested by powerful corporate players.

“I suspect Trump will be less restrained than last time… more aggressive and damaging,” said Brett Hartl, with the Center for Biological Diversity. “We’ll wait for the storm to hit and fight back,” he added.

These concerns come after the Biden administration has implemented of many hard-fought measures such as new standards to address widespread contamination of US drinking water with per- and polyfluoroalkyl substances (PFAS), and environmental justice initiatives to better protect marginalized communities from industrial pollution.

The current administration has, just this month alone, completed a series of steps lauded by conservationists and environmentalists that include finalizing rules to limit oil drilling in the Arctic National Wildlife Refuge, and finishing a proposal to restrict oil exploration and grazing in 65 million acres of sage grouse habitat.

November 4, 2024

Napa Valley landfill dumped toxic waste into waterways for decades, workers allege in federal lawsuit

By Shannon Kelleher

A California landfill has been illegally dumping toxic waste into the Napa River for years, polluting waters that feed a valley known around the world for the quality of its vineyards, according to a federal lawsuit filed by landfill employees.

Fifteen workers from Clover Flat Landfill and Upper Valley Disposal Service (UVDS) in Napa County, California, allege that operators of the landfill intentionally diverted what is called “leachate” – untreated liquid wastewater often containing heavy metals, nitrates, bacteria and pathogens – into the Napa River and other area waterways for decades. The actions were done to “avoid the costs of properly trucking out the toxic leachate” to facilities designated for safe disposal, the lawsuit alleges.

“Defendants’ deliberate pollution of the Napa River watershed with toxic wastewater is particularly disturbing because Napa Valley contains some of the most valuable agricultural land in the country, and water from the Napa River is used by local wineries to irrigate Napa’s famous vineyards, and is a significant community water resource,” the complaint said.

The workers say the practice not only endangered the public but created unsafe working conditions, exposing the employees to “toxic chemicals, pollution, and poisons” without providing employees proper protective gear.

The action, which was filed Oct. 28 in US District Court in San Francisco, seeks more than $500 million in damages and names as defendants both current owner Waste Connections, a nationwide waste management company, as well as the facilities’ former owners.

October 8, 2024

PFAS levels increasing in Arctic animals, study finds

By Douglas Main

Concentrations of toxic pollutants known as per- and polyfluoroalkyl substances (PFAS) are continuing to increase in Arctic animals such as polar bears despite efforts to rein in their use, according to a new study.

One type of PFAS known to be of particular harm, PFOS, was largely phased out starting 20 years ago. But average levels in several populations of polar bears and seals have continued to go up in recent years, according to the paper, published this month in the journal Science of the Total Environment.

Exposure to some PFAS, also called “forever chemicals,” increases the risk of a wide range of health harms to humans and animals, scientists have found.

“There’s nothing in the Arctic that isn’t contaminated by PFAS,” says study co-author Rainer Lohmann, who studies persistent organic pollutants as an environmental chemist at the University of Rhode Island. “It’s just very sad.”

Of the animals looked at in the study, polar bears had the highest concentrations of various types of PFAS, approximately 10 times what has been found in people in the region.

Troubling findings were also seen for a type of PFAS called PFNA. Average concentrations of PFNA have steadily risen over the last couple decades in all populations of polar bears and seals studied, and appear to still be on the rise, according to the paper.

The latest published work adds to more than 200 studies that have turned up PFAS in well over 600 animal species, including those that are threatened or endangered.

September 18, 2024

Controversial landfill in wine country expected to close

By Shannon Kelleher

A landfill in California’s wine country that has drawn scrutiny for its management of toxic chemicals may be poised to close, Napa County officials confirmed this week.

Waste Connections, the large national waste management company that owns the Napa Valley-area Clover Flat Landfill, is expected to submit a closure plan to the county’s Local Enforcement Agency (LEA) “near the end of this year,” Holly Dawson, the county’s deputy CEO for communications, said in an email.

Based on recent discussions with Waste Connections, the closure process is expected to take about three to four years, and there are no plans for future operations at the site beyond long-term monitoring, said Dawson.

The development comes as a growing coalition of local activists and nonprofit groups call for Clover Flat’s closure, citing concerns about the landfill’s numerous regulatory violations, environmental impact and social justice issues. The landfill has been the site of fires and is suspected of polluting waterways in the famous winemaking region with harmful chemicals, which drain into the river that irrigates local vineyards.

Confirmation from the LEA about the company’s intent to shutter Clover Flat follows a May email exchange between a Waste Connections employee and Napa County staff about the landfill’s future, which was uncovered in a recent public records request.

“There have been some internal developments on our end for the Clover Flat site, including early closure of the landfill – the details are still being worked out,” wrote the company’s California Regional Engineer.

Ronald Mittelstaedt, the president and CEO of Waste Connections, did not respond to a request for comment about plans to close the landfill.

If plans to shut down Clover Flat move forward, the landfill will be “capped,” said Dawson, a process that involves placing a cover over a waste site to keep harmful chemicals contained.

“The waste currently onsite will remain, covered with a final closure system designed to protect the environment and meet regulatory requirements,” said Dawson, noting that Waste Connections will “continue to maintain and monitor the landfill following closure” and that the LEA will conduct routine inspections.

September 17, 2024

Debate grows over whether some PFAS chemicals have a place in clean energy

By Shannon Kelleher

As the planet warms at an alarming rate, culminating in the hottest summer on record, nations worldwide are rapidly scaling up so-called clean energy technologies that can replace the world’s dependence on climate change-inducing fossil fuels.

More than 100 countries last year committed to triple renewable energy capacity by 2030 to try to slow climate change and reduce the related devastating human and environmental toll from increasingly frequent and extreme weather events.

In the United States, manufacturers of electric vehicles (EVs) and EV batteries have announced more than $188 billion in investments over the last nine years, with most of the money committed during the last two. And this May, the US Department of Energy (DOE) announced a $71 million investment in projects to expand access to solar power – dubbed the “cheapest form of energy” by the DOE.

But behind the enthusiasm lies a little-discussed but looming concern. Many of these technologies being heralded as tools to turn back climate change rely on fluoropolymers, a family of plastics that are part of a class of chemicals known as per- and polyfluoroalkyl substances (PFAS). Many types of PFAS are considered so hazardous that the US and many other countries have targeted them for elimination.

PFAS have been identified as ubiquitous environmental pollutants that don’t break down naturally, with several linked to a range of human health problems. Fluoropolymer safety for humans and the environment is still a matter of debate.

But the paradox of boosting the use of potentially harmful types of PFAS chemicals in order to create technologies that can address harmful climate change is stirring debate among some experts and prompting a deeper look at the pursuit of “clean energy”.

“Obviously, the green energy transition is very important,” said Ian Cousins, a professor at the University of Stockholm in Sweden who studies the environmental impact of PFAS. “I don’t want to hinder that. But at the same time… the green industry should be not just green energy but green in every regard.”