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2 plants already have a new or tighter limit for 1,4-Dioxane in their permit, taking effect Jan 1, 2029 (2 limits). 2 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 |
|---|---|---|---|---|
| U.S. General Services Administration · CO0035033 · CO Federal | 30-day average 1 ug/L, new | Jan 1, 2029 | 4.35 ug/L (8 values) | 4.35× |
| Federal Highway Administration - Central Federal Lands · CO0034860 · CO Federal · design flow 0.043 MGD | 30-day average 1 ug/L, new | Jan 1, 2029 | 1.2 ug/L (9 values) | 1.2× |
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