Skip to content
←All methodology components

Component / Mid importance

PFAS exposure

PFAS detection rate, federal MCL exposure, and remediation-funding eligibility.

What it captures

PFAS exposure became a first-order Infrastructure readiness component in 2025 with the finalization of the federal PFAS MCL. The component captures three layered signals: detection at source water, exceedance against the federal MCL, and eligibility for federal remediation funding.

Utilities with high PFAS exposure face a near-certain treatment-build obligation. The capital cost runs from tens of millions to several hundred million depending on system size and treatment-technology choice. The build is rarely fundable from existing rate base; federal grants cover a portion but not all.

Source categories

  • Federal contaminant monitoring data
  • SDWA PFAS sampling extracts
  • Federal remediation-funding eligibility lists

Specific dataset identifiers and feed names are not published. Subscribers can request the full source list under NDA.

Refresh cadence

Monthly

Importance class

Mid importance

Specific weight not published.

Why this importance class

The regulatory shock from the federal MCL has materially elevated the analytical value of the signal but the underlying exposure pattern is still being characterized across the U.S. system. As coverage matures, the importance may rise.

Edge cases

  • Non-PFOA/PFOS PFAS variants are in different states of regulatory clarity.
  • Utilities with PFAS detections at intermediate distribution points but not at source water present an ambiguous read; the analyst overlay handles these.

See it applied

The PFAS exposure component shows up on every utility scoring panel in the live workspace and on every dossier. Read the national rankings (sanitized demo) to see component scores ranked across the cohort, or read the curated dossiers for the analyst-authored read on how the component drives a P3 case at named municipalities.