
Is Crow R Mill Pond Polluted?
Yes — Crow R Mill Pond in Kandiyohi County, Minnesota is on the EPA's Clean Water Act 303(d) impaired-waters list (2024 assessment cycle). It is cited for Mercury. 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 | Fish consumption |
| EPA names this lake in the listing | Yes |
| Location | Kandiyohi County, Minnesota |
Pollutants Cited
- Mercury — Mercury accumulates in fish tissue and is the single most common impairment in northern lakes. It usually arrives via atmospheric deposition from coal combustion rather than local discharge — which is why even remote, clear lakes can be mercury-impaired. It triggers fish-consumption advisories, not swimming closures.
Specific parameters in the EPA record: Mercury in Fish Tissue.
What this means for using Crow R Mill Pond
Crow R Mill Pond's listing is driven by contaminants that build up in fish (Mercury), so the practical impact is on eating the fish, not on swimming. Follow the state fish-consumption advisory for Minnesota. 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. Crow R Mill Pond measures algae (chlorophyll-a) at 6.7 µg/L and phosphorus at 21 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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