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2 plants already have a new or tighter limit for Perfluorooctanoic acid (PFOA) in their permit, taking effect between Jan 1, 2027 and May 1, 2027 (3 limits). 0 of them reported a median above that limit between Oct 1, 2025 and Sep 30, 2026. EPA's file of Oct 16, 2026.
| Plant | New limit | Effective | Median, last 12 months | × limit |
|---|---|---|---|---|
| Kent County Department of Public Works · MI0037486 · MI Industrial | daily maximum 40 ng/L, new | Jan 1, 2027 | 33.5 ng/L (10 values) | 0.837× |
| 3M Chemical Operations LLC · MN0001449 · MN Industrial, major · design flow 44 MGD | daily maximum 2.1 ng/L, tighter | May 1, 2027 | — | — |
| 3M Chemical Operations LLC · MN0001449 · MN Industrial, major · design flow 44 MGD | daily maximum 2.1 ng/L, tighter | May 1, 2027 | — | — |
New: a limit on something the outfall was never limited on. Tighter: lower than the limit in force. Median: the plant's own reports, Oct 1, 2025 to Sep 30, 2026; none where most were below detection.
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Read the permit before relying on a value. Source: EPA ECHO, Oct 16, 2026. As JSON: /api/v1/permits?state=OH&upcoming=true · MCP: https://passage-data.com/mcp