This short educational video illustrates how PFAS from AFFF (aqueous film-forming foam) migrates through the subsurface and impacts groundwater systems. Designed for a broad audience, including policymakers, attorneys, and the general public, it explains key hydrogeologic principles using a clear visual sequence. You’ll learn:

• How aquitards can restrict the vertical migration of PFAS, even when municipal wells are pumping from deep aquifers.
• How groundwater plumes can discharge to nearby surface water bodies, including lakes and rivers.
• That the distribution of PFAS in groundwater often reflects multiple offsite sources, not just the immediate release area.
• That a groundwater plume map such as the one shown above represents the lateral distribution of contaminants at depth.

Note that the concepts illustrated are applicable to many groundwater contaminants, not just AFFF/PFAS.