The Regulatory Shift That Changed Everything About Procurement
When EPA finalized Maximum Contaminant Levels (MCLs) for six PFAS compounds in April 2024 — setting limits as low as 4 ppt for PFOA and PFOS individually and 10 ppt for PFNA, PFHxS, HFPO-DA (GenX), and a hazard index combination — water utilities across the country found themselves in a situation their existing procurement frameworks were not designed to handle. The old approach of specifying treatment technology based on known contaminants at known concentrations gave way to something more demanding: specifications that had to anticipate a moving regulatory target while still satisfying procurement law requirements for fairness and competition.
The result has been a broad rewriting of filter procurement language — a shift that affects everything from technical specifications in RFPs to the evaluation criteria used to score vendor bids. Understanding what utilities are now asking for, and why, is essential for any supplier of PFAS filtration equipment or media.
From Compound-Specific to Broad-Spectrum Requirements
Before the final rule, most utility procurement specs for PFAS treatment referenced PFOA and PFOS removal to a defined percentage or concentration. This was logical at the time — those were the compounds with health advisories. Post-rule, utilities have been forced to confront the reality that treatment systems must now address a six-compound MCL set, including short-chain compounds like PFHxS and PFNA that behave very differently from PFOA and PFOS in granular activated carbon systems.
The procurement language shift has been toward what many utilities now call “broad-spectrum PFAS removal” — a phrase that appears in RFPs with increasing frequency. Rather than listing specific compounds, specifications now often require demonstrated removal across C4 through C8 chain lengths, with some utilities explicitly requiring performance data on short-chain compounds like PFBS, PFHxA, and PFHxS. This is a fundamentally different technical bar than what GAC vendors were previously evaluated against.
Suppliers who cannot provide verified performance data for short-chain PFAS are increasingly finding themselves unable to pass technical evaluation thresholds, regardless of their track record with legacy compounds.
How NSF/ANSI 53 Certification Is Being Written Into Specs
NSF/ANSI 53 certification has always been a standard reference in drinking water treatment procurement, but its role in PFAS-specific RFPs has become more nuanced post-rule. Utilities are increasingly distinguishing between products certified under NSF 53 for PFOA/PFOS reduction and products certified for a broader compound set. Some procurement documents now require vendors to specify which compounds are covered under their certification, and at what challenge concentrations.
This distinction matters because NSF 53 certification protocols have historically focused on legacy long-chain PFAS. Utilities writing procurement specs in 2024 and 2025 are beginning to require certification that covers the full MCL compound set — or at minimum, documented third-party testing under conditions approximating the new MCL thresholds. Third-party laboratory verification, particularly from accredited facilities, has become a competitive differentiator in ways it was not before.
Lifecycle Cost and Regeneration Requirements Entering Bid Criteria
One of the most significant procurement changes has been the formalization of lifecycle cost analysis as a bid evaluation criterion. Many utilities previously awarded PFAS treatment contracts primarily on capital cost, with operating cost estimates treated as secondary. Post-rule, the recognition that treatment will be ongoing — not a one-time installation — has pushed many procurement offices to weight total cost of ownership (TCO) more heavily in bid scoring.
For filter media specifically, this means procurement specs now frequently require vendors to provide documented service life data under defined operating conditions, regeneration protocols where applicable, and spent media disposal cost estimates. Utilities in states with aggressive PFAS programs have also begun requiring compliance data demonstrating that spent media disposal will meet state hazardous waste thresholds — a requirement that affects the comparative economics of different media types significantly.
What Vendors and Suppliers Should Expect Going Forward
The procurement landscape for PFAS filtration will continue to evolve as utilities move through the compliance timeline — with the first compliance deadline for the new MCLs set for 2027. Suppliers should anticipate that short-chain PFAS performance data will become a baseline requirement rather than a differentiator, that third-party certification scope will be scrutinized more carefully, and that lifecycle documentation will carry real weight in bid evaluations.
Utilities rewriting procurement specs are not doing so arbitrarily. They are responding to a regulatory framework that requires them to demonstrate continuous compliance with a multi-compound MCL set over an indefinite operating horizon. Suppliers who align their documentation, testing protocols, and product development with that reality will be best positioned in the procurement environment that is now taking shape.