PFAS REGULATIONS
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While PFAS regulations may start in Congress, the laws passed typically grant the EPA the authority to define the details. On this page, we’ll outline the primary programs with which Pace® helps its customers comply as well as some pending actions Worth watching.
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FAST TRACK YOUR LEARNING CURVE
Need to get up to speed quickly? Our technical and regulatory briefings will provide your team with updates on the latest EPA and state-specific regulations pertaining to your organization. These private sessions will also give you an opportunity to ask our PFAS and other emerging contaminants experts any questions you have on the science or the regulations.
CHEMICAL CONTAMINANT LIST (CCL5)
The U.S. EPA included PFAS as a class of compounds in the fifth revision of its Chemical Contaminant List (CCL 5). To be clear, this group does not include all 5000+ PFAS compounds, but the agency recently expanded the list to include all PFAS with specific chemical structures. The CCL prioritizes compounds for investigation and regulatory action under the SDWA (Safe Drinking Water Act).
CLEAN AIR ACT (CAA)
The CAA authorizes the EPA to regulate hazardous air pollutants. PFAS are not yet identified as a pollutant under the CAA. However, airborne PFAS as a source of overall contamination is of increasing interest, and the EPA is currently studying sources of PFAS air emissions and their impact on communities. The results of this research will be used to inform future rulemaking.
CLEAN WATER ACT (CWA)
The CWA gives the U.S. EPA the authority to regulate non-potable water. Currently, the EPA is working with the Department of Defense to develop a new method (Draft Method 1633) for analyzing up to 40 specific compounds in non-potable waters, such as wastewater, groundwater, and surface waters. Once validated, the CWA grants the EPA the authority to promulgate this method and paves the way for more stringent sampling and testing requirements in other EPA programs.
COMPREHENSIVE ENVIRONMENTAL RESPONSE, COMPENSATION, AND LIABILITY ACT (CERCLA)
In April 2024, the EPA finalized a rule designating PFOA and PFOS as hazardous substances under CERCLA. This gives the EPA the authority to respond directly to PFAS contamination in the event of a release. CERCLA also grants the EPA the power to address existing contamination under the Superfund program.
EFFLUENT GUIDELINES PROGRAM
Effluent Limitation Guidelines (ELGs) are regulations established by the U.S. EPA, which limit the level of pollutants allowed to be discharge into surface water and to Publicly Owned Treatment Works (POTWs). According to the EPA “ELGs are intended to represent the greatest pollutant reductions that are economically achievable for an industry.” The most current finalized plan is ELG Plan 15. In December 2024, the EPA published Preliminary Plan 16 and opened it up for public comment.
SIXTH UNREGULATED CONTAMINANT MONITORING RULE (UCMR 6)
EPA issued the proposal on July 1, 2026 for public comment. EPA will review those comments, do additional review, and finalize the Rule by the end of 2026. Sampling for UCMR 6 will take place between 2028 and 2030.Water systems should start their preparations by reaching out to Pace® for budgetary estimates.
Pace® has analyzed thousands of drinking water samples under US EPA’s UCMR 3, UCMR 4, and UCMR 5 programs, and our water quality experts are regular presenters about each round of UCMR at water conferences across the country. In addition to EPA-approval for UCMR, Pace® is certified by every state and US territory for the analysis of drinking water samples for compliance monitoring of regulated contaminants
NATIONAL POLLUTION DISCHARGE ELIMINATION SYSTEM (NPDES)
Created in 1972 by the Clean Water Act (CWA), NPDES is a permitting program designed to regulate the discharge of pollutants into the waters of the U.S. (WOTUS). States can petition the U.S. EPA to administer their own NPDES program, and the majority of states have received partial or full approval. Tribal Lands are authorized separately. Four states, NH, NM, MD, and MA, as well as the majority of U.S. territories continue to rely on the EPA for NPDES permitting. In December of 2022, the EPA released a memo detailing guidance to states for NPDES permitting. This memo references utilizing Draft Method 1633 for monitoring programs with a caveat that the draft method for Adsorbable Organic Fluorine can be used in conjunction with 1633. Pace® has the capability of running both of these methods.
RESOURCE CONSERVATION AND RECOVERY ACT (RCRA)
Enacted in 1976, RCRA governs the disposal of solid and hazardous waste. While designating PFAS a hazardous substance under CERCLA gives the U.S. EPA the authority to mandate cleanup, designating PFAS a hazardous substance under RCRA allows the EPA much greater control over the entire lifecycle of PFAS: manufacturing, transportation, treatment, storage, and disposal.
SAFE DRINKING WATER ACT (SDWA)
The Safe Drinking Water Act (SDWA) establishes a data-driven, risk-based process to assess drinking water contaminants of emerging concern. The SDWA grants the U.S. EPA the authority to set National Primary Drinking Water Regulations (NPDWR). On April 10, 2024, the agency established the first-ever enforceable limits for six PFAS: PFOA, PFOS, PFBS, PFNA, PFHxS, and GenX (HFPO-DA). Changes to the rule were proposed in May of 2025, with finalization anticipated in the spring of 2026. Until then, the current regulations and requirements reflected on this page remain in effect.
SIGNIFICANT NEW USE RULE (SNUR)
Established under the auspices of the Toxic Substances Control Act (TSCA), the U.S. EPA’s Significant New Use Rule grants the agency the authority to approve or reject new uses for potentially hazardous chemicals, including PFAS. The EPA also announced its intention to remove the Low-Volume Exemptions (LVEs) that have been issued for PFAS that are imported or manufactured in small quantities.
TOXICITY ASSESSMENTS
Not much is known about the toxicity of the vast majority of PFAS compounds, but the U.S. EPA is seeking to fill in some of the gaps with toxicity assessments focused on PFAS of particular concern as well as those that represent specific categories of PFAS compounds. These assessments inform rulemaking, such as health advisories and limit-setting at both the state and federal level. As of Q1, 2024, toxicity assessments have been completed for PFOA, PFOS, GenX (HFPO-DA), PFBS, PFBA, PFDA, and PFHxA. These assessments can be found on the EPA’s Integrated Risk Information System (IRIS) database.
TOXIC RELEASE INVENTORY (TRI)
TRI tracks toxic chemical releases from industrial facilities into the environment. The National Defense Authorization Act (NDAA) provides for the automatic addition of PFAS to TRI once the U.S. EPA finalizes a compound’s toxicity value. The number of PFAS chemicals included in TRI now reflects the automatic addition of PFHxS‑Na effective January 1, 2026, bringing the total to 206 PFAS subject to TRI reporting. In addition, all TRI‑listed PFAS have been classified as “chemicals of special concern,” eliminating the de minimis reporting exemptions and increasing supplier notification and reporting obligations even at trace concentrations. TRI data are available on the U.S. EPA’s website.
TOXIC SUBSTANCES CONTROL ACT (TSCA)
TSCA grants the U.S. EPA the authority to establish reporting, record-keeping, and testing requirements for chemical compounds. The TSCA Inventory is a published list of the chemical substances manufactured or processed (including imports) in the U.S. In 2023, the EPA finalized a reporting rule requiring manufacturers and importers of PFAS or PFAS-containing articles in any year since January 1, 2011, to electronically report information regarding PFAS uses, production volumes, disposal, exposures, and hazards. In addition to proving PFAS Testing Services, Pace® Regulatory Services can help manufacturers and importers meet the new reporting requirements.REQUEST A STATE REGULATORY BRIEFING
Pace® works with clients across the country, and our PFAS experts would be happy to walk through regulatory compliance requirements in your state.
PACE® REGULATORY SERVICES
In addition to PFAS Testing, Pace® offers regulatory services that can help with concerns such as raw materials data management, TSCA reporting, product label reviews, and more.REASONS TO CHOOSE PACE®
EXPERIENCED
Pace® has been an industry leader in persistent organic pollutant testing for over three decades.
CERTIFIED
We’re certified/accredited by NELAC, ISO, DOD, DOE, and in every state with a PFAS lab certification program.
RELIABLE
For emergencies, our Rapid Response Team can provide defensible results in as little as 24 hours.
COMMITTED
We are committed to helping our customers advance their important work through building strong relationships, delivering upon expectations, and providing exceptional customer service.
ADVANCED
We can test for PFAS in both solid and aqueous matrices, including potable and non-potable waters, soils, and biota.
INNOVATIVE
We’re on the leading edge of science, working with EPA, DOD, ASTM, and others to develop new methods for analyzing PFAS.
