The Evolution of Bid Language in Post-MCL Procurement
Municipal procurement documents for PFAS filtration have undergone notable linguistic and technical evolution since EPA’s 2024 final rule. The term “broad-spectrum PFAS removal” — once an informal industry descriptor — has migrated into formal RFP language at water utilities of all sizes, from large metropolitan systems to small community water systems writing their first PFAS treatment procurement. Understanding what this phrase now means in a legal and technical procurement context is essential for both utility procurement staff and the vendors responding to their bids.
The shift matters because procurement language that is poorly defined creates ambiguity that can result in bid protests, contract disputes, or — most importantly — treatment systems that do not meet the utility’s actual compliance needs. As the legal stakes around PFAS compliance have risen, utility procurement offices and their legal counsel have invested significantly more care in defining technical requirements precisely.
Defining “Broad-Spectrum” in Technical Specifications
In the most rigorous municipal RFPs, “broad-spectrum PFAS removal” is now defined with explicit compound lists and chain length ranges rather than left as a general descriptor. Common formulations specify removal capability across C4 through C8 PFAS compounds — encompassing PFBS, PFHxA, PFHxS, PFOS, PFOA, PFNA, and PFDA — with performance targets tied to the MCL framework. Some utilities have gone further, requiring demonstrated removal of PFAS precursor compounds or GenX (HFPO-DA), which is not a traditional chain-length PFAS but is included in the MCL compound set.
The practical effect of this specificity is that vendors can no longer satisfy broad-spectrum requirements by providing PFOA/PFOS removal data alone. RFP technical sections increasingly require compound-specific performance data submitted as part of the bid, with third-party verification required for at least a subset of the specified compounds. Bids that do not include this data are being evaluated as technically non-responsive.
Chain length specification is particularly significant because GAC, which remains the most widely deployed PFAS treatment technology, performs substantially less well for short-chain compounds (C4–C6) than for long-chain compounds. RFPs that require demonstrated short-chain performance are effectively requiring vendors to explain how they will address this GAC limitation — whether through pre-treatment, alternative media, or a polishing step.
Evaluation Criteria: How Bids Are Being Scored
Beyond the technical specifications themselves, the evaluation criteria used to score competing bids have shifted in ways that favor vendors with comprehensive performance documentation. Prior to 2024, many utility RFPs evaluated technical proposals primarily on the basis of system design and capital cost, with treatment performance treated as a pass/fail threshold. Post-rule, utilities are increasingly using weighted scoring matrices that give significant weight to performance documentation quality, compound coverage breadth, and third-party verification.
This scoring shift has material consequences for competitive positioning. A vendor offering a lower capital cost but limited short-chain performance data may score lower than a vendor offering a higher capital cost but comprehensive third-party test data across the full MCL compound set. Utilities are making this trade-off explicitly, recognizing that the cost of a treatment system that fails to meet MCLs will far exceed any capital cost savings.
Pass/Fail vs. Tiered Technical Thresholds
Some utilities are moving to tiered technical evaluation structures that distinguish between minimum requirements and competitive differentiators. Under this approach, a vendor must demonstrate performance against PFOA and PFOS to a specified level as a pass/fail threshold; additional points are awarded for demonstrated performance on short-chain compounds, for NSF/ANSI 53 certification scope beyond the legacy compound set, and for lifecycle documentation including spent media disposal protocols.
This tiered structure is more transparent than simple pass/fail thresholds and creates clearer competitive incentives for vendors to invest in performance documentation for short-chain and emerging PFAS compounds. It also gives procurement officers more defensible scoring rationales in the event of a bid protest.
Recommendations for Vendors Responding to Municipal RFPs
Vendors responding to municipal PFAS filtration RFPs should treat the technical proposal as the primary competitive document. The era of winning PFAS treatment contracts primarily on price is ending; utilities are making sophisticated technical evaluations and weighting performance documentation heavily. Key investment areas: compound-specific performance data at the ppt level for the full MCL set; third-party certification that covers short-chain compounds; lifecycle documentation including service life under defined operating conditions; and clear documentation of how the proposed system handles the specific compounds and concentrations identified in the utility’s source water characterization.
Utilities are also increasingly asking vendors to explain how their technology will perform as EPA’s PFAS regulatory framework continues to evolve — which is to say, as additional compounds are added to the regulated list. Vendors who can demonstrate that their technology offers flexibility and adaptability to an expanding regulatory target will have a meaningful advantage in a procurement environment where utilities are thinking about 20-year compliance horizons.