PFAS-credentialed compliance consultants that serve Massachusetts. Listings include both firms headquartered in Massachusetts and out-of-state firms with active Massachusetts project coverage. See the Massachusetts compliance page for contamination data and regulatory deadlines that drive this work.
Privately-held engineering firm with a deep municipal water practice. PFAS treatment evaluations, GAC and IX pilot studies, EC-SDC grant application support.
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.
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...
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...
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.
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.
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.
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...
Major federal contractor for DOD AFFF-impact investigation, IRP/MMRP site work, and PFAS remediation under USACE and AFCEC IDIQs.
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...
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...
Sustainability and environmental consultancy with a global PFAS service line — site investigation, product-stewardship advisory, and CERCLA/regulatory positioning support.
Global engineering firm with significant U.S. PFAS investigation and remediation work, including AFFF impact assessments and industrial-site liability evaluations.
Long Island-headquartered municipal engineering firm. Heavy New York / New Jersey water utility PFAS treatment design and 1,4-dioxane compliance work.
Global engineering and EPC firm with PFAS treatment design, site investigation, and regulatory advisory work across federal and municipal sectors.
East Coast engineering and environmental firm. PFAS site investigation and remediation work across Pennsylvania, New Jersey, and New York.
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 ...
Environment & Health practice with a long PFAS toxicology and site-investigation track record, including expert-witness work in major PFAS litigation.
Environmental and management consulting firm with a heavy New Jersey and New York footprint. Significant PFAS site characterization and litigation-support work.
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...
Multi-discipline engineering firm with combined municipal water treatment and remediation practices. Active in PFAS pilot studies, design-build, and Brownfields assessment.
Mid-size U.S. environmental consulting and engineering firm with PFAS site investigation, treatment design, and compliance practices across the Northeast and Midwest.
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.