Showing 136-150 of 3147
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Predictions of groundwater PFAS occurrence atdrinking water supply depths in the United States
Science
24 Oct 2024 | Science
Researchers developed a predictive model using machine learning to estimate the likelihood of PFAS contamination in groundwater across the United States, revealing that 71 to 95 million people could be using drinking water with detectable levels of these harmful "forever chemicals" prior to any water treatment.
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Department of the Air Force, EPA commit to collaborative action on PFAS concerns at Tucson International Airport Area Superfund Site
News
23 Oct 2024 | Air Force
In a significant step forward in addressing concerns regarding per-and polyfluoroalkyl substances at the Tucson International Airport Area Superfund Site, the Department of the Air Force and the Environmental Protection Agency today committed to a cooperative framework for the ongoing remediation efforts at the site.
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Delta Air Lines says it needs more time to ditch toxic PFAS firefighting foam at MSP
News
23 Oct 2024 | The Minnesota Star Tribune
Minnesota lawmakers gave maintenance hangars, including Delta’s, a reprieve as Sun Country, MSP make progress toward PFAS-free firefighting foam.
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Statistical Mapping of PFOA and PFOS in Groundwater throughout the Contiguous United States
Science
23 Oct 2024 | Environ Sci Technol
Mapping PFAS contamination in U.S. groundwater is challenging due to inconsistent testing, but a new statistical approach using ecological modeling helps create continuous maps of PFAS distribution, guiding future sampling and addressing health risks from these chemicals.
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PFAS-free firefighting foam coming to Portland International Jetport
News
22 Oct 2024 | Portland Press Herald
The Portland Fire Department says the PFAS-free foam should be fully installed in the airport's 3 trucks by mid-November.
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Personal care product use and per- and polyfluoroalkyl substances in pregnant and lactating people in the Maternal-Infant Research on Environmental Chemicals study
Science
22 Oct 2024 | Environ Int
Personal care product (PCP) use during pregnancy and postpartum is linked to higher PFAS concentrations in prenatal plasma and human milk, indicating that PCPs may be a modifiable source of PFAS exposure and underscoring the importance of informed choices and potential regulations to reduce exposure in pregnant and lactating individuals.
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Regulation of terrestrial input and ocean processes on the occurrence and transport of traditional and emerging per-and polyfluoroalkyl substances in the inner shelf of the East China Sea
Science
21 Oct 2024 | Water Research
Coastal oceans show significant accumulation of PFAS in nearshore waters due to terrestrial inputs, industrial sources, and hydrological conditions, with certain PFAS compounds posing elevated ecological risks in regions like the East China Sea.
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PFAS profiles in Biosolids, Composts, and Chemical Fertilizers Intended for Agricultural Land Application in Quebec (Canada)
Science
21 Oct 2024 | J. Hazard. Mater.
Biosolids, sewage sludge, and composts used for sustainable agriculture may contain PFAS chemicals that can accumulate in soil and enter the food chain, with this study finding significant PFAS levels across various biowastes in Quebec, Canada, highlighting concerns about long-term environmental and health risks from repeated applications.
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Insights into PFAS contaminants before and after sewage discharges into a marine protected harbour
Science
21 Oct 2024 | Chemosphere
Untreated wastewater discharges in the UK are causing elevated levels of harmful PFAS chemicals in protected marine areas, with significant contamination found in water, seaweed, and oysters, underscoring the need for better wastewater management and a deeper understanding of PFAS impacts on marine ecosystems.
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Trends in NHANES Biomonitored Exposures in California and the United States following Enactment of California’s Proposition 65
Science
21 Oct 2024 | EHP
California's Proposition 65 aimed to reduce exposure to harmful chemicals like PFAS, but despite overall declines in these substances nationwide, it's uncertain if the law directly drove the reductions, as broader regulations and public awareness may have played significant roles.
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Australia to toughen rules around acceptable levels of key PFAS chemicals in drinking water under draft guidelines
News
20 Oct 2024 | The Guardian
Under the draft, the limit for PFOA – a compound used to make Teflon – would be lowered from 560 ng/L to 200 ng/L, based on evidence of their cancer-causing effects.
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Role of Fluorocarbon Chain Length in the Adsorption of Perfluoroalkyl Substances on Nanoplastic Particles
Science
20 Oct 2024 | ACS ES&T Water
In aquatic environments, nanoplastics and PFAS can interact through electrostatic forces, with PFAS adsorption on oppositely charged nanoplastics leading to changes in particle stability depending on PFAS chain length and water chemistry, influencing how these contaminants might spread in different water conditions.
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Prenatal exposure to per- and polyfluoroalkyl substances, fetoplacental hemodynamics, and fetal growth
Science
20 Oct 2024 | Environ Int
Legacy PFAS exposure during pregnancy may be linked to reduced fetal growth, but the effects of next-generation PFAS and PFAS mixtures are less clear, with further research needed to understand their impact on fetoplacental blood flow.
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Health groups accuse state of downplaying nation's largest spill of toxic chemicals: 'Increases the distrust that people have when it comes to government'
News
19 Oct 2024 | Yahoo!News
At Brunswick Naval Air Station near the coast of Maine, a fire suppression system malfunctioned, spilling about 51,000 gallons of PFAS-containing foam into surface water and causing massive levels of contamination.
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EPA Proposes to Add 16 PFAS and 15 PFAS Categories to the TRI List of Chemicals
Policy
18 Oct 2024
The U.S. EPA proposed on October 8, 2024, to add 16 individual PFAS and 15 PFAS categories representing more than 100 individual PFAS to the Toxics Release Inventory list of toxic chemicals subject to reporting to comply with the National Defense Authorization Act for Fiscal Year 2020.