PFAS Compliance consultants

Top-5 global engineering firm with deep PFAS practice — treatment system design-build, AFFF investigation at DOD installations, and regulatory consulting.

Global consultancy with one of the most-cited PFAS practices in industry. AFFF impact investigation, foam fractionation R&D, and litigation-support technical work.

Employee-owned engineering and environmental consulting firm with a dedicated PFAS practice; particularly active on Minnesota industrial and municipal PFAS sites including 3M-area work and treatment s...

Nonprofit applied science organization developing PFAS destruction technologies including supercritical water oxidation (SCWO) and PFAS Annihilator systems. Conducts PFAS treatability studies and fiel...

Employee-owned engineering firm with a substantial municipal water practice. PFAS treatment design, pilot studies, and SRF-funded project delivery.

Employee-owned environmental engineering firm specializing in water and wastewater. PFAS treatability studies and full-scale design for U.S. utilities.

Employee-owned engineering and construction firm with PFAS treatment design, AFFF replacement programs at airports and military bases, and PFAS destruction technology evaluation. Active prime on DoD A...

Privately-held engineering firm with a deep municipal water practice. PFAS treatment evaluations, GAC and IX pilot studies, EC-SDC grant application support.

Water-utility-focused PFAS and treatment specialty consultancy. UCMR sampling, treatment evaluation, source water assessments, and SDWA compliance planning.

PFAS-treatment-specialty consultancy founded by ex-Hazen and Sawyer PFAS leaders. UCMR support, treatment evaluation, and regulatory compliance planning for water utilities nationwide.

Environmental engineering and applied science firm widely recognized as a PFAS R&D thought leader. Leading work on in-situ treatment, colloidal activated carbon, and AFFF site characterization.

Water-focused engineering firm known nationally for PFAS treatment research and design. Led pilot work on GAC, IX, and RO for major utilities including OCWD and NYC DEP.

Employee-owned A/E firm with a national water practice that has designed PFAS treatment systems (GAC, IX, RO) for multiple U.S. utilities. Active in UCMR-5 sampling support and EPA MCL compliance plan...

Public-health and water testing organization headquartered in Ann Arbor. PFAS lab services plus NSF/ANSI 53 and 58 certification of treatment devices for PFOA/PFOS reduction.

Global testing, inspection, and certification firm. PFAS analytical services across drinking water, wastewater, soil, and food packaging matrices.

Major federal contractor for DOD AFFF-impact investigation, IRP/MMRP site work, and PFAS remediation under USACE and AFCEC IDIQs.

Specialist water-treatment consultancy with deep PFAS bench- and pilot-study experience for California utilities. Founders include former MWDSC water-quality leadership.

Water engineering firm with offices in Grand Forks, Fargo, Bismarck, Minot and Williston ND, three South Dakota cities and four Montana cities. Offers PFAS sampling plans, treatment feasibility studie...

Michigan environmental consulting firm. Notable PFAS work on the Wolverine Worldwide / 3M tannery contamination cases in Belmont and northern Kent County.

Environmental science and engineering firm specializing in sediment and water resources with growing PFAS practice covering site investigation, fate-and-transport modeling, and remedial design for PFA...

La Grande, Oregon civil engineering firm with offices in Hermiston, Redmond and Enterprise. Prepared the City of Hermiston's PFAS Mitigation Feasibility Study, adopted in August 2026 as the city's $26...

International environmental consultancy with a U.S. PFAS practice covering source investigations, ESA due diligence, regulatory navigation, and treatability evaluations. Active across MN-based industr...

National environmental and water resources consultant with PFAS site assessment, soil/groundwater remediation, and treatment system design services. Provides PFAS compliance support for industrial cli...

Municipal water engineering firm with Illinois offices including Crystal Lake, Chicago, Naperville and Peoria, and five Florida offices. Publishes a PFAS guide for water utilities.

Lincoln, Rhode Island engineering firm with a Hartford, Connecticut office. Engineer for Plainville, Massachusetts' $26.3M PFAS water treatment plant and operates PFAS groundwater remediation using ac...

Pennsylvania environmental consulting firm. PFAS Phase II investigations, groundwater monitoring, and Act 2 / Land Recycling Program submissions.

Ohio municipal engineering firm. Water utility compliance planning, PFAS treatment evaluations, and OEPA WSRLA grant coordination.

Largest U.S. firm exclusively dedicated to water/wastewater engineering. Significant PFAS pilot and design work for California and Western U.S. utilities.

Engineering and environmental consulting firm with offices in Greenville, South Carolina; Nashville, Knoxville and Johnson City, Tennessee; and Bridgeport, Charleston and Martinsburg, West Virginia. O...

Albuquerque-based hydrogeology and environmental firm, a subsidiary of Geo-Logic Associates. Contracted by the New Mexico Environment Department to define PFAS impacts to groundwater and surface water...

Wisconsin-based municipal engineering firm specializing in water and wastewater with active PFAS treatment evaluations and MCL compliance planning for Wisconsin and Upper Midwest utilities.

Employee-owned environmental consulting and engineering firm. PFAS UCMR sampling support, AFFF site investigation, and compliance planning for water systems and DOD clients.

Mid-Atlantic geotechnical and environmental consulting firm. Phase I/II ESAs including PFAS scope for North Carolina sites.

Specialty EHS consultancy with a well-known PFAS practice covering source investigations, litigation support, fate and transport, and treatability studies. Frequently retained by industrial and Fortun...

Environmental consulting and engineering firm headquartered in Memphis, Tennessee, with offices including Nashville and Knoxville, Tennessee; Madison/Huntsville, Alabama; Bowling Green, Kentucky; Jack...

Gainesville, Florida environmental consulting firm with offices in Orlando, Tallahassee and Tampa and a Chicago-area office in Lombard, Illinois. Conducts PFAS site investigations and develops treatme...

Stow, Ohio environmental firm with Florida regional offices in Fort Lauderdale and Tampa. Offers PFAS field sampling and remediation, treatment and disposal services.

Sustainability and environmental consultancy with a global PFAS service line — site investigation, product-stewardship advisory, and CERCLA/regulatory positioning support.

Engineering and environmental firm founded in Freeport, Illinois, with seven Illinois offices and three in Iowa. Offers PFAS site assessment, water treatment design and Illinois EPA compliance support...

Texas-headquartered engineering firm with a major municipal water practice supporting PFAS treatment evaluations, pilot studies, and MCL compliance planning for Texas and Southeast utilities.

Hartford, Connecticut engineering firm with offices in New Haven and Providence. PFAS work includes the Eastern Connecticut Fire School AFFF investigation and a PFAS wastewater sampling protocol for a...

Multi-discipline engineering firm with a strong water practice supporting PFAS treatment design (GAC/IX), UCMR-5 sampling, and MCL compliance planning for utilities across the South Central and Southe...

Pennsylvania-based national engineering firm. PFAS treatment design, PENNVEST grant coordination, and water utility compliance planning.

Global engineering firm with significant U.S. PFAS investigation and remediation work, including AFFF impact assessments and industrial-site liability evaluations.

Northeast-focused geotechnical and environmental firm with established PFAS practice covering Massachusetts MCP and New Hampshire/Vermont/Maine state PFAS programs. Performs site investigation, remedi...

Long Island-headquartered municipal engineering firm. Heavy New York / New Jersey water utility PFAS treatment design and 1,4-dioxane compliance work.

Environmental and geotechnical consultancy with a dedicated PFAS practice. Offices include Wethersfield CT, Portland OR and Honolulu HI.

North Carolina environmental consultancy with notable Cape Fear / GenX-area PFAS investigation experience. Phase I/II, groundwater, and brownfield work.

St. Louis engineering firm with Illinois offices in Chicago, Edwardsville, Marion and O'Fallon. Prepared the PFAS remediation study for Portageville, Missouri's public water system, which received eme...

Water and wastewater engineering firm with offices in Hoover and Northport, Alabama. Designed the reverse osmosis PFAS treatment plant for the West Morgan-East Lawrence Water and Sewer Authority and r...

Austin-based geoscience and engineering firm with New Mexico offices in Albuquerque and Carlsbad. Has a PFAS and emerging contaminants practice for water utilities, including PFAS well-risk assessment...

Global engineering and EPC firm with PFAS treatment design, site investigation, and regulatory advisory work across federal and municipal sectors.

West Coast water-focused engineering firm. PFAS treatment design and pilot work for California and Pacific Northwest municipalities.

Engineering firm with more than a dozen Florida offices. Designed and permitted the City of Stuart's ion exchange PFAS treatment system (up to 8 MGD).

Water and wastewater engineering firm with offices in Birmingham, Huntsville and Montgomery, Alabama, and Newnan, Georgia. Completed a full-scale GAC pressure filter installation for PFAS removal at t...

East Coast engineering and environmental firm. PFAS site investigation and remediation work across Pennsylvania, New Jersey, and New York.

Federal services contractor with major DoD environmental remediation portfolio including PFAS investigation, remedial action, and AFFF transition support at Air Force, Navy, and Army installations. Ho...

Raleigh-based engineering firm with ten Florida offices plus offices in Atlanta and Newark, Delaware. Prepared a water treatment master plan for a South Florida city evaluating ion exchange, GAC and n...

Tucson-headquartered hydrogeology firm with Phoenix and Flagstaff offices. Investigates PFAS occurrence, sources and migration affecting water providers' supply wells.

Global engineering consultancy with U.S. water practice supporting PFAS treatment evaluations, pilot studies, and UCMR-5 compliance for municipal utilities. Active in northeastern U.S. PFAS treatment ...

Bennington, Vermont engineering firm with a Burlington office. Work includes PFAS mitigation at Hiland Hall School and a preliminary engineering report on PFAS-contaminated wells in south and northeas...

Michigan-based engineering and environmental consulting firm. PFAS site investigation and Phase II ESA work under EGLE's Part 201 program.

Athens, Georgia environmental consulting firm. Offers PFAS site assessments and PFAS phytoremediation feasibility analyses, pilot studies and corrective actions.

Employee-owned engineering and design firm with municipal water practice supporting UCMR-5 sampling, PFAS treatment planning, and MCL compliance for community water systems across the Midwest and Moun...

Environment & Health practice with a long PFAS toxicology and site-investigation track record, including expert-witness work in major PFAS litigation.

Materials characterization and environmental forensics lab offering PFAS analysis in environmental and industrial matrices, including consumer-product and AFFF source attribution work. Supports litiga...

Environmental and management consulting firm with a heavy New Jersey and New York footprint. Significant PFAS site characterization and litigation-support work.

Engineering and environmental services firm headquartered in Raleigh, North Carolina, with offices in South Carolina (Charleston, Columbia, Greenville, Spartanburg, Florence), Huntsville, Alabama, Cha...

New Hampshire-based environmental engineering firm with active PFAS site characterization and remedial design work across New England. Provides PFAS treatment evaluation, groundwater modeling, and reg...

Seattle-based geotechnical and environmental firm with Fairbanks and Anchorage offices. Evaluates PFAS at Alaska DOT&PF airports and investigated PFAS at the Fairbanks Regional Fire Training Facility,...

Multi-discipline engineering firm with combined municipal water treatment and remediation practices. Active in PFAS pilot studies, design-build, and Brownfields assessment.

Wisconsin municipal engineering firm. Water and wastewater system planning, PFAS treatment evaluations, and DNR-coordinated compliance work.

Science and engineering consulting firm headquartered in Greenville, South Carolina, with offices in Cary, North Carolina and Lexington and Pikeville, Kentucky. States that its engineers and scientist...

Employee-owned national geotechnical and environmental consulting firm with PFAS site assessment, Phase II investigation, and remedial design services. Active across DoD, industrial, and airport PFAS ...

Mid-size U.S. environmental consulting and engineering firm with PFAS site investigation, treatment design, and compliance practices across the Northeast and Midwest.

Employee-owned environmental and engineering firm with a dedicated PFAS practice covering source investigations, fate and transport modeling, treatability studies, and ITRC-guidance-aligned site chara...

EHS consulting firm offering PFAS regulatory compliance, TSCA reporting (PFAS Section 8(a)(7)), air emissions assessment, and ITRC-guidance support. Major presence across TX, FL, and the Southeast.

Orlando-headquartered engineering and environmental consulting firm. Performs PFAS site assessments including soil, groundwater, surface water and potable water sampling.

Ohio-headquartered environmental consulting firm with PFAS investigation, brownfield assessment, and remediation services across the Midwest.

Michigan-based municipal engineering firm. Water-utility compliance planning, PFAS treatment evaluations, and EGLE grant application support.

Employee-owned engineering and environmental firm with a strong New England municipal water practice supporting PFAS treatment design, UCMR-5 sampling, and MCL compliance planning. Active across MA, N...

North Carolina municipal engineering firm. Water-system compliance, PFAS treatment planning, and SRF / EC-SDC grant application support.

Engineering and operations firm with offices in Providence RI, Middletown CT, Tampa FL, Duluth GA, St. Charles MO and three Montana cities. Designed and built the University of Rhode Island's interim ...

New England-based municipal engineering firm with a water practice supporting PFAS treatment design, UCMR-5 sampling, and MCL compliance for community water systems across ME, NH, VT, and MA.

WSP acquired Wood's E&IS practice in 2022. Global PFAS investigation, AFFF site work, and treatment evaluation capabilities across federal and private-sector clients.