The DoD PFAS Footprint and What It Means for Water Treatment
The U.S. Department of Defense operates the largest single portfolio of PFAS-contaminated sites in the country. Decades of aqueous film-forming foam (AFFF) use at military installations has left a contamination legacy that spans hundreds of sites across all military branches. Following the EPA MCL rule and CERCLA hazardous substance designation in 2024, DoD has faced increasing pressure to accelerate remediation timelines and demonstrate that its treatment systems can meet the new regulatory standards.
For water treatment technology vendors, the DoD remediation portfolio represents a substantial and technically demanding market. DoD procurement processes for environmental remediation are complex — governed by Federal Acquisition Regulations, service-specific contracting requirements, and CERCLA process requirements — but the technical specifications emerging from these processes reflect the same regulatory drivers that are reshaping municipal and industrial procurement.
How DoD Treatment Specifications Have Evolved Post-2024
Prior to the 2024 rule, most DoD PFAS treatment systems were designed primarily around PFOA and PFOS removal, reflecting the health advisory framework that existed at the time. Treatment specifications typically called for GAC or ion exchange systems with performance targets set at the 70 ppt health advisory level. The new MCLs — particularly the 4 ppt limits for PFOA and PFOS and the 10 ppt limits for short-chain compounds — have required significant revision to treatment specifications across the DoD portfolio.
The Army Corps of Engineers and Naval Facilities Engineering Systems Command (NAVFAC), which manage most DoD environmental remediation contracting, have both updated their technical guidance documents to reflect the new MCL framework. The most significant technical change has been the requirement to demonstrate removal performance for the full six-compound MCL set, including short-chain compounds that many existing systems were not designed or tested to address.
For treatment media specifically, DoD technical evaluations are now requiring performance data at the parts-per-trillion level for the full MCL compound set — a substantially more demanding analytical requirement than what was standard in pre-2024 procurements.
Contractor Requirements and Technology Qualification Pathways
DoD environmental remediation contracts are typically awarded to prime contractors — large engineering firms with CERCLA cleanup experience — who then subcontract specific technology components. For water treatment media and equipment suppliers, the pathway to DoD contracts runs primarily through these prime contractors rather than directly through the government. Understanding what primes are required to demonstrate to DoD on behalf of their subcontractors is therefore essential.
Prime contractors are now required to document that treatment technologies specified in their remedial designs have been evaluated for the full MCL compound set. This documentation requirement flows down to media and equipment suppliers: primes are asking for compound-specific performance data that they can include in their remedial design submittals. Vendors who can provide that data — particularly for short-chain compounds — are in a significantly stronger position in subcontract competitions.
AFFF-Impacted Groundwater: The Hardest Treatment Problem
Groundwater at AFFF-impacted military sites presents some of the most challenging treatment conditions in the PFAS remediation field. AFFF formulations contained dozens of PFAS compounds, many of them short-chain or precursor compounds that transform into regulated PFAS in the environment. Treatment systems at these sites must therefore address not just the target MCL compounds, but a complex mixture that may include PFAS precursors capable of transforming into regulated compounds after treatment.
This has pushed DoD technical specifications toward treatment approaches that can address precursor PFAS, not just the six MCL compounds. Some specifications now require treatability study data demonstrating performance against total oxidizable precursor (TOP) assay equivalents — a measure of the full suite of PFAS precursors present in a sample. This is a technically demanding requirement that goes significantly beyond what standard MCL-focused specifications call for.
What the DoD Pipeline Means for Technology Vendors
The DoD remediation pipeline represents a multi-decade contracting opportunity for PFAS treatment technology vendors. Sites identified in the DoD’s Installation Action Plans number in the hundreds, and many will require active water treatment systems for years or decades. Vendors who can demonstrate performance across the full compound spectrum — including short-chain and precursor compounds — and who can provide the documentation needed for CERCLA remedial design submittals will be well-positioned to participate in this market.
The investment required to generate that documentation — treatability studies, third-party performance verification, analytical data at ppt detection limits — is substantial. But given the scale and duration of the DoD PFAS remediation pipeline, it is an investment that qualified vendors will need to make to compete effectively in this segment of the market.