The Evolution of Industrial PFAS Procurement
Industrial water treatment procurement for PFAS has undergone a significant evolution in the period since the EPA published its 2024 NPDWR. Where requests for proposal from industrial buyers once specified “PFAS removal system” or referenced NSF 53 certification as a sufficient performance standard, current industrial RFPs increasingly specify removal performance requirements for individual PFAS compounds — including short-chain compounds like PFBS and PFHxA that previous generations of specifications overlooked. This evolution reflects a more sophisticated understanding of PFAS chemistry, regulatory liability exposure, and the performance limitations of conventional treatment technology.
The drivers of this procurement sophistication are several. Legal counsel advising industrial operators on PFAS liability has pushed for more specific performance documentation. Environmental engineers conducting source water characterization have produced compound-level analytical results that demand compound-level treatment specifications. Insurance underwriters are beginning to ask detailed questions about PFAS treatment efficacy for regulated compounds. And procurement professionals who have seen early-generation PFAS filter installations fail to address the full compound profile are incorporating lessons learned into successor specifications.
From “NSF 53 Certified” to Compound-Specific Requirements
NSF/ANSI 53 certification for PFOA and PFOS reduction was, for several years, the standard of care reference in industrial PFAS filter specifications. The 2024 EPA MCL expansion has rendered this specification inadequate for regulatory compliance purposes: a filter that removes PFOA and PFOS but passes PFBS above the 2,000 ng/L MCL fails to meet current compliance requirements. Industrial buyers who specified “NSF 53 certified” filters in 2020 or 2021 may find that those installed systems do not achieve compliance under current regulations, creating both replacement cost and liability exposure.
Current best-practice industrial specifications enumerate the specific PFAS compounds for which removal data is required, specify the minimum removal percentage or maximum effluent concentration at defined service life intervals (typically beginning-of-life, midlife, and end-of-rated-life), and require that performance data be generated in water chemically similar to the application source water rather than clean laboratory water. This level of specification detail was previously associated only with large municipal procurement; it is now appearing in industrial and commercial purchase orders for relatively small treatment units.
Liability Concerns Driving Technology Specificity
EPA’s 2024 PFAS Superfund hazardous substance designation for PFOA and PFOS, combined with anticipated expansion to additional PFAS compounds, has elevated the liability profile of industrial water treatment decisions. An industrial operator that installs a PFAS treatment system and subsequently discovers that the system does not remove all regulated compounds — because the specification did not require it and the technology was not capable of it — faces potential liability for PFAS releases that the installed system failed to prevent.
Legal counsel guidance on PFAS liability has therefore become an input to procurement specifications, not just to site remediation decisions. The practical result is that “PFAS filter” specifications are being replaced by specifications that identify the treatment technology type (specifically whether it is GAC, ion exchange, or a described PFAS-selective adsorbent), the compound removal claims that the technology must support, and the documentation requirements for ongoing performance verification. Technology type specificity reduces ambiguity about whether a compliant procurement will deliver the performance needed to discharge PFAS treatment obligations.
What Buyers Are Asking For in Current RFPs
Analysis of industrial PFAS treatment RFPs published in the 2024 to 2025 period reveals a set of recurring requirements that reflect the compound-specific and liability-driven evolution of procurement practice. Removal efficiency data for PFBS, PFHxA, and PFNA — not just PFOS and PFOA — is now a standard requirement in RFPs from industrial buyers with sophisticated environmental programs. Requests for performance data under site-specific source water conditions (provided as a water quality parameter sheet rather than assumed to be clean water) appear in a growing fraction of specifications. And requirements for spent media disposal documentation — including PFAS characterization of spent media and chain-of-custody for disposal — appear in specifications from buyers managing extended producer responsibility or insurance requirements.
The specification language for adsorbent type has also evolved. Rather than accepting any adsorbent-based technology, some RFPs now explicitly distinguish between conventional GAC, conventional ion-exchange resin, and “PFAS-selective adsorbent media with demonstrated removal of short-chain PFAS including PFBS and PFHxA to [MCL] over a minimum service life of [X] bed volumes.” This level of technical specificity in procurement documents represents a maturation of the market that rewards suppliers with genuine broad-spectrum performance data and creates accountability for performance claims.
Implications for Suppliers and Technology Providers
The evolution of industrial procurement specifications has direct implications for suppliers of PFAS treatment media and systems. Technologies that can only document performance for PFOS and PFOA are increasingly non-competitive in sophisticated procurement processes. The market is rewarding investment in broad-spectrum performance data — including short-chain PFAS, diverse compound classes, and site-relevant water chemistry — with access to procurement opportunities that generic PFAS filter suppliers cannot access.
For buyers, this procurement evolution represents progress toward a market where performance claims are verifiable and technology selection is based on the actual treatment challenge rather than the legacy compound profile that original regulatory frameworks emphasized. The alignment between compound-specific MCLs, compound-specific procurement requirements, and compound-specific performance verification creates a more robust accountability chain from regulation through procurement through operation than the simpler “PFAS filter” approach that preceded it.