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EPA Guidance on PFAS in Biosolids - Update

The United States Environmental Protection Agency (“EPA”) has extended the public comment period for the Draft Sewage Sludge Risk Assessment for Perfluorooctanoic Acid (PFOA) and Perfluorooctane Sulfonic Acid (PFOS) (“Draft...more

EPA Guidance on PFAS in Biosolids

On January 15, 2025, the United States Environmental Protection Agency (“EPA”) published its “Draft Sewage Sludge Risk Assessment for Perfluorooctanoic Acid (PFOA) and Perfluorooctane Sulfonic Acid (PFOS)” (“Draft Risk...more

PFAS in Soil: State Regulations - Updated February 2024

In the absence of enforceable federal standards for per- and polyfluoroalkyl substances (“PFAS”) in soil, several states have started the process of regulating PFAS in soil themselves. These regulations have implications for...more

EPA Risk Evaluation for 1,4-Dioxane

On November 14, 2024, the U.S. Environmental Protection Agency (“EPA”) determined that 1,4-dioxane presents an unreasonable risk of injury to human health under its conditions of use....more

PFAS in Groundwater: State-by-state Regulations - November 2024

In the absence of federal cleanup standards for per- and polyfluoroalkyl substances (“PFAS”) in groundwater, several states have started the process of regulating PFAS in groundwater themselves. As a result, states have...more

Colorado Increases Restrictions on PFAS in Consumer Products

On May 1, 2024, Colorado governor Jared Polis signed SB-81, a bill entitled the "Perfluoroalkyl and Polyfluoroalkyl Consumer Protection Act." As discussed below, this bill expands Colorado’s existing restrictions on the use...more

EPA Designates PFOS and PFOA as CERCLA Hazardous Substances

On April 19, 2024, the United States Environmental Protection Agency (“EPA”) announced that it is designating perfluorooctanoic acid (“PFOA”) and perfluorooctanesulfonic acid (“PFOS”) as Hazardous Substances under the...more

EPA Sets National Limits for Certain PFAS in Drinking Water

On April 10, 2024, the United States Environmental Protection Agency (“EPA”) issued its long-anticipated National Primary Drinking Water Regulation (“NPDWR”) establishing Maximum Contaminant Levels  (“MCLs”) for certain PFAS...more

2023 Federal PFAS Regulatory Recap

As expected, 2023 was an expansive year for the regulation of per- and polyfluoroalkyl substances (“PFAS”) at the federal level. The United States Environmental Protection Agency (“EPA”) took (or at least proposed)...more

PFAS Drinking Water Standards: State-by-state Regulations - Updated January 2024

In the absence of an enforceable federal drinking water standard for per- and polyfluoroalkyl substances (“PFAS”) – for the time being anyway - many states have regulated PFAS compounds in drinking water. The result is a...more

PFAS in Firefighting Foam (AFFF) and Equipment: State-by-state Regulations - Updated: December 2023

Numerous states have either enacted or proposed regulations regarding per- or polyfluoroalkyl substances (“PFAS”) present in Class B Aqueous Film-Forming Foams (“AFFF”) used for firefighting, or present in firefighters’...more

PFAS Update: Litigation Trends - Motions to Dismiss

Marketing campaigns describing products as “green,” “natural,” and “clean” have become increasingly popular as companies seek to attract environmentally conscientious consumers. With a simultaneous increase in public...more

PFAS in Groundwater: State-by-State Regulations - October 2023

In the absence of federal cleanup standards for per- and polyfluoroalkyl substances (“PFAS”) in groundwater, several states have started the process of regulating PFAS in groundwater themselves. As a result, states have...more

EPA Publishes Extensive PFAS Chemical Reporting Rule With Wide-ranging Impacts

On September 28, 2023, the United States Environmental Protection Agency (“EPA”) issued a pre-publication rule for reporting and recordkeeping requirements regarding per- and polyfluoroalkyl substances (“PFAS”) under the...more

PFAS Drinking Water Standards: State-by-State Regulations - August 2023

In the absence of an enforceable federal drinking water standard for per- and polyfluoroalkyl substances (“PFAS”), many states have started regulating PFAS compounds in drinking water. The result is a patchwork of regulations...more

PFAS Update: State Soil Concentration Regulations - July 2023

In the absence of binding federal standards for per- and polyfluoroalkyl substances (“PFAS”) in soil, several states have started the process of regulating PFAS in soil themselves. These regulations have implications for site...more

PFAS Update: Proposed New Legislation Intended to Exempt Certain Industries from PFAS Liability

On May 3, 2023, Cynthia Lummis (R-WY) introduced five bills in the U.S. Senate proposing several PFAS liability exemptions to the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (“CERCLA”)....more

PFAS Update: Proposed Federal Drinking Water Limits - EPA Goes Below and Beyond

Last week, EPA issued its long-anticipated proposal for Maximum Contaminant Levels (“MCLs”) for certain PFAS compounds which, once finalized, will establish national limits for those compounds in drinking water. EPA has been...more

PFAS Update: State-By-State PFAS Drinking Water Standards - February 2023

In the absence of an enforceable federal drinking water standard for per- and polyfluoroalkyl substances (“PFAS”), many states have started regulating PFAS compounds in drinking water. The result is a patchwork of regulations...more

Welcoming the New Year with EPA Revisions to the All Appropriate Inquiry Regulations

On December 15, 2022, the United States Environmental Protection Agency (“EPA”) published a final rule amending the Standards and Practices for All Appropriate Inquiries (“AAI”) to incorporate and adopt the American Society...more

1,4-Dioxane Listed as an EPA Contaminant

On October 28, 2022, the U.S. Environmental Protection Agency (“EPA”) listed 1,4-dioxane on the Fifth Contaminant Candidate List (“CCL 5”). This is an important step to EPA’s potential regulation of 1,4-dioxane under the Safe...more

1,4-Dioxane State Groundwater Regulations

There is no federal drinking water standard for 1,4-dioxane, but as illustrated by a recent press release for the Industrial Excess Landfill Superfund Site in Ohio, the U.S. Environmental Protection Agency (EPA) and state...more

PFAS Update: August 2022 State-By-State PFAS Drinking Water Standards

In the absence of an enforceable federal drinking water standard for per- and polyfluoroalkyl substances (“PFAS”), many states have started regulating PFAS compounds in drinking water. The result is a patchwork of regulations...more

1,4-Dioxane: The Latest Emerging Vapor Intrusion Issue

1,4-Dioxane is an emerging contaminant.  Like “traditional” volatile organic compounds, it has the potential to volatilize and enter indoor air. This article explores why businesses should consider conducting a VI assessment...more

State-by-State Regulation of 1,4-Dioxane in Drinking Water

As illustrated by the May 11, 2022, press release for the Industrial Excess Landfill Superfund Site in Uniontown, Ohio, the U.S. Environmental Protection Agency (“EPA”) and state environmental agencies have begun directing...more

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