Remediation (PFAS)

PFAS remediation refers to the treatment and cleanup of PFAS-contaminated soil, groundwater, surface water, and other environmental media. Unlike conventional contaminants, PFAS are extremely difficult and expensive to remediate due to their chemical stability. Common remediation technologies include granular activated carbon (GAC) adsorption, ion exchange, high-pressure membranes (reverse osmosis/nanofiltration), and emerging destruction technologies such as supercritical water oxidation and electrochemical treatment. Remediation can also involve soil excavation and containment or in-situ stabilization.

EPA PFAS Remediation Guidance; CERCLA; ITRC PFAS Technical Guidance; EPA PFAS OUT Initiative (2025–2026).

PFAS remediation costs are orders of magnitude higher than conventional contaminant cleanup. Manufacturers and facility operators face potential CERCLA liability, state environmental orders, and natural resource damage claims. The challenge is compounded by the fact that standard treatment technologies (e.g., GAC) remove but do not destroy PFAS—the contaminated media must then be disposed of or regenerated, creating secondary waste streams. Companies should assess their facilities for potential PFAS contamination, particularly near AFFF use areas, fluorochemical manufacturing, and wastewater discharge points.

A military base used PFAS-containing AFFF for firefighting training over 20 years, contaminating groundwater across a 200-acre plume. Remediation includes installing 12 extraction wells, a GAC treatment system, and long-term monitoring. The projected cleanup cost exceeds $50 million over 30 years. EPA’s PFAS OUT initiative provides technical assistance to prioritize such sites.