Is Amnicon Lake Polluted?
Yes — Amnicon Lake in Douglas County, Wisconsin is on the EPA's Clean Water Act 303(d) impaired-waters list (2024 assessment cycle). It is cited for Cause unknown, Turbidity. No cleanup plan (TMDL) has been completed yet. "Impaired" is a legal designation, separate from the lake's EPA condition class water-quality readings: it means at least one designated use (such as swimming, aquatic life, or fish consumption) does not meet state standards for the listed pollutant.
EPA 303(d) Listing
| On 303(d) impaired list | Yes |
| Cleanup plan (TMDL) | Not yet written |
| Assessment cycle | 2024 |
| EPA IR category | 5 |
| Uses not supported | Aquatic life, Recreation |
| EPA names this lake in the listing | Yes |
| Location | Douglas County, Wisconsin |
Pollutants Cited
- Cause unknown — listed by EPA as exceeding water-quality standards for at least one designated use.
- Turbidity — listed by EPA as exceeding water-quality standards for at least one designated use.
Specific parameters in the EPA record: Cause Unknown, Total Suspended Solids (TSS).
What this means for using Amnicon Lake
Review the EPA assessment and any state advisories before relying on Amnicon Lake for swimming, fishing, or other uses. An impairment listing does not mean the lake is closed — most impaired lakes remain open for boating and swimming. It means a specific pollutant exceeds a standard for a specific use. Amnicon Lake measures phosphorus at 23.2 µg/L. See the full breakdown on the lake report. The official EPA assessment is available in the ATTAINS waterbody report.
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