Illinois EPA has established specific compliance deadlines for PFAS drinking water standards under Board rules. Initial monitoring must be completed by April 25, 2027, with ongoing compliance monitoring beginning April 26, 2027. Full compliance with maximum contaminant levels (MCLs) begins April 26, 2029. Community water supplies must monitor these PFAS in drinking water.
Illinois EPA Director James Jennings issued an official statement on May 21, 2026 confirming that Illinois will maintain its PFAS drinking water standards regardless of federal regulatory rollbacks. The statement emphasized Illinois' commitment to addressing PFAS pollution and protecting drinking water resources. Illinois has established Maximum Contaminant Levels (MCLs) for six PFAS compounds under its Part 620 groundwater quality regulations, with compliance required by April 26, 2029.
Illinois EPA announced the implementation timeline for PFAS drinking water standards under 35 Illinois Administrative Code Part 620. Community Water Supplies must complete initial monitoring by April 25, 2027; ongoing compliance monitoring begins April 26, 2027; and compliance with Maximum Contaminant Levels (MCLs) begins April 26, 2029. Illinois reaffirmed it will maintain its PFAS drinking water standards regardless of federal EPA changes.
Illinois EPA Director James Jennings issued a formal statement confirming that Illinois will maintain its state-specific PFAS drinking water standards despite federal EPA's proposed rollback of four PFAS MCLs. Illinois groundwater standards for HFPO-DA (GenX), PFBS, PFHxS, PFNA, PFOA, and PFOS remain in effect. Community water supplies must still comply with state initial monitoring deadlines (April 25, 2027) and MCL compliance requirements (April 26, 2029).
Illinois EPA issued an official statement confirming the state will maintain its PFAS drinking water standards despite the Trump Administration's rollback of federal PFAS regulations. Illinois' Maximum Contaminant Levels (MCLs) for six PFAS compounds (PFOA: 4 ppt, PFOS: 4 ppt, PFHxS: 10 ppt, PFNA: 20 ppt, PFBS: 2,100 ppt, and GenX) remain in effect. The statement confirms Illinois Community Water Supplies must complete initial monitoring by April 25, 2027, begin ongoing compliance monitoring on April 26, 2027, and achieve MCL compliance by April 26, 2029.
Illinois EPA has established specific compliance timelines for the PFAS drinking water Maximum Contaminant Levels (MCLs) under the amended Part 620 groundwater quality regulations. Community water supplies must complete initial monitoring by April 25, 2027, begin ongoing compliance monitoring on April 26, 2027, and achieve compliance with MCLs by April 26, 2029. The standards cover PFOA (4 ppt), PFOS (4 ppt), PFHxS (10 ppt), PFNA (10 ppt), HFPO-DA/GenX (10 ppt), and PFBS (part of Hazard Index mixture).
Illinois has enacted new legislation requiring wastewater treatment plants and industrial facilities holding Clean Water Act discharge permits to conduct ongoing monitoring for per- and polyfluoroalkyl substances (PFAS) in wastewater discharges, biosolids, and sewage sludge. The law is intended to identify and control major sources of PFAS contamination entering Illinois waterways and the environment.
The Illinois Environmental Protection Agency (Illinois EPA) has amended its Part 620 Groundwater Quality Regulations to establish state-specific Maximum Contaminant Levels (MCLs) for six per- and polyfluoroalkyl substances (PFAS) in drinking water. The amendments are designed to protect public health by limiting PFAS exposure through drinking water sources and strengthening groundwater quality protections across the state. Under the regulation, community water supplies must conduct monitoring for regulated PFAS compounds and demonstrate compliance with the established MCLs according to the phased implementation schedule.
The Office of the Illinois State Fire Marshal submitted its 2025 report on Intentionally Added PFAS in Illinois Firefighting Foam on February 11, 2026, as required under the PFAS Reduction Act (415 ILCS 170), established by Public Act 102-0290. The report summarizes the OSFM survey of the Illinois fire service to determine the prevalence and use of Class B firefighting foam containing intentionally added PFAS. Fire departments and municipalities should review this report for current PFAS foam inventory status and compliance planning under the Act's restrictions on PFAS-containing foam manufacture, sale, and use.
Illinois Senate Bill 3101, introduced January 29, 2026 by Senator Julie A. Morrison, proposes amendments to the Illinois Environmental Protection Act (415 ILCS 5) to add new sections establishing PFAS regulations. The bill would create Title XIX and sections 60 and 60.1 with requirements for analytical methods, sampling protocols, reporting procedures, and compliance timelines for per- and polyfluoroalkyl substances in water quality.
Illinois EPA notified the Village of Dupo and connected water systems that PFAS compounds were detected in water sampling at levels exceeding the state's newly established groundwater quality standards. This action triggers mandatory Right-to-Know notification requirements under Illinois law, requiring water systems to notify customers within 5 business days. This demonstrates ongoing enforcement of Illinois' state-level PFAS standards independent of federal regulatory actions.
Under the Illinois PFAS Reduction Act (415 ILCS 170/20), sellers of firefighting personal protective clothing containing PFAS must provide written notice to purchasers disclosing that the clothing contains PFAS and the reason PFAS are added, effective January 1, 2026. Sellers and purchasers must retain notice copies for at least 3 years. The sale of PFAS-containing firefighting clothing is prohibited effective January 1, 2027, and auxiliary firefighting equipment containing PFAS is banned effective January 1, 2030.
Illinois EPA issued a new health advisory for 6:2 Fluorotelomer Sulfonic Acid (6:2 FTS), adding this PFAS compound to the state's list of regulated substances. Health advisories provide guidance levels for drinking water concentrations at which no adverse health effects are expected and remain in effect until enforceable groundwater quality standards are established. Illinois now has health advisories for nine PFAS compounds total. Compliance teams should monitor for future transition to enforceable groundwater standards.
On November 24, 2025, the Illinois Environmental Protection Agency issued a health advisory for 6:2 fluorotelomer sulfonic acid (6:2 FTS), CASRN 27619-97-2. This PFAS substance was designed as a replacement for PFOS in fire-fighting foam and other uses. The health advisory provides guidance on potential adverse health effects and is part of Illinois EPA's ongoing PFAS monitoring program. Community water supplies should be aware of this advisory when testing for PFAS contamination. The statewide PFAS investigation has detected 6:2 FTS in some community water supply groundwater.
Illinois enacted HB 2516 amending the PFAS Reduction Act to prohibit intentionally added PFAS in cosmetics, dental floss, juvenile products, menstrual products, and intimate apparel. The ban takes effect January 1, 2032. PFAS is defined as fluorinated organic chemicals containing at least one fully fluorinated carbon atom. The law also requires IEPA to prepare a report on fluoropolymers by August 1, 2027. Manufacturers selling covered products in Illinois must reformulate to remove intentionally added PFAS before the effective date.
Public Act 104-221 prohibits the manufacture, sale, or distribution of auxiliary firefighting personal protective equipment containing intentionally added PFAS in Illinois, effective January 1, 2030. Auxiliary equipment includes self-contained breathing apparatuses, respiratory protection products, hearing protection, protective communication devices, and fall protection products. This builds on the existing January 1, 2026 prohibition for firefighting protective clothing.
Public Act 104-0231 (HB 2516) amends the Illinois PFAS Reduction Act to prohibit the sale, distribution, or offering for sale of certain consumer products containing intentionally added PFAS, effective January 1, 2032. Covered products include cosmetics, dental floss, juvenile products, menstrual products, and intimate apparel. The legislation also requires Illinois EPA to submit a report to the General Assembly by August 1, 2027 assessing the authority and resources needed to develop a fluoropolymer review program for consumer products. Cookware and food packaging were removed from the final bill.
Public Act 104-221 amends the PFAS Reduction Act to require that, beginning January 1, 2026, any person, firm, association, partnership, corporation, organization, joint venture, importer, or domestic distributor of firefighting agents or firefighting equipment that sells firefighting personal protective equipment containing PFAS chemicals to any person, local government, or State agency must provide written notice to the purchaser at the time of sale. The notice must state that the equipment contains PFAS chemicals. This notification requirement applies alongside the prohibition on firefighting personal protective clothing.
HB1295 amends the PFAS Reduction Act to require, on or before January 1, 2027, any manufacturer of a product sold, offered for sale, or distributed in Illinois that contains intentionally added PFAS to submit specified information to the Illinois Environmental Protection Agency. The Agency may waive the submission or extend the time for compliance. The bill also provides that if the Pollution Control Board has reason to believe a product contains intentionally added PFAS and the manufacturer has not submitted required information, the Board may prohibit sale of the product. As of March 21, 2025, the bill was re-referred to the Rules Committee, indicating it remains pending. Manufacturers should monitor this bill for potential new reporting obligations.
Senate Bill 0167 proposes to amend the PFAS Reduction Act to prohibit the sale, offer for sale, or distribution of juvenile products containing intentionally added PFAS beginning January 1, 2026. The bill includes exemptions for federally preempted products, used products, prosthetic/orthotic devices, and FDA-regulated medical devices. Juvenile products are defined as products designed or marketed for children under 12 years of age.