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Sewage treatment plant, Watersmeet, Michigan. NPDES permit MI0055204, in force until Jan 27, 2030. Last 12 months: over a limit 3 times (last November 2025). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| November 2025 | BOD, 5-day, 20 deg. C, monthly average | 121.6 lb/d | ≤ 118 lb/d | 3% |
| November 2025 | BOD, 5-day, 20 deg. C, monthly average | 42 mg/L | ≤ 30 mg/L | 40% |
| November 2025 | BOD, 5-day, percent removal, minimum % removal | 77 % | ≥ 85 % | 53% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | daily minimum | ≥ 5 mg/L | all year |
| Oxygen, dissolved [DO] | daily minimum | ≥ 5 mg/L | all year |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 118 lb/d | all year |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 118 lb/d | all year |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 176 lb/d | all year |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 176 lb/d | all year |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year |
| pH | daily minimum | ≥ 6.5 SU | all year |
| pH | daily minimum | ≥ 6.5 SU | all year |
| pH | daily maximum | ≤ 9 SU | all year |
| pH | daily maximum | ≤ 9 SU | all year |
| pH | minimum | report only (SU) | all year |
| pH | minimum | report only (SU) | all year |
| pH | maximum | report only (SU) | all year |
| pH | maximum | report only (SU) | all year |
| Solids, total suspended | monthly average | ≤ 45 mg/L | all year |
| Solids, total suspended | monthly average | ≤ 45 mg/L | all year |
| Solids, total suspended | weekly average | ≤ 65 mg/L | all year |
| Solids, total suspended | weekly average | ≤ 65 mg/L | all year |
| Solids, total suspended | monthly average | ≤ 176 lb/d | all year |
| Solids, total suspended | monthly average | ≤ 176 lb/d | all year |
| Solids, total suspended | weekly average | ≤ 255 lb/d | all year |
| Solids, total suspended | weekly average | ≤ 255 lb/d | all year |
| Solids, total suspended | monthly average | report only (mg/L) | all year |
| Solids, total suspended | monthly average | report only (mg/L) | all year |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year |
| Nitrogen, ammonia total [as N] | monthly average | report only (lb/d) | all year |
| Nitrogen, ammonia total [as N] | monthly average | report only (lb/d) | all year |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year |
| Rainfall | monthly total | report only (in) | all year |
| Rainfall | monthly total | report only (in) | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| E. coli | monthly geometric mean | ≤ 126 #/100mL | all year |
| E. coli | monthly geometric mean | ≤ 126 #/100mL | all year |
| E. coli | daily maximum | ≤ 235 #/100mL | all year |
| E. coli | daily maximum | ≤ 235 #/100mL | all year |
| BOD, 5-day, percent removal | minimum % removal | ≥ 85 % | all year |
| BOD, 5-day, percent removal | minimum % removal | ≥ 85 % | all year |
| Solids, suspended percent removal | daily minimum | ≥ 65 % | all year |
| Solids, suspended percent removal | daily minimum | ≥ 65 % | all year |
| Outfall observation,visual, y/n response | value | report only (N=0;Y=1) | all year |
| Outfall observation,visual, y/n response | value | report only (N=0;Y=1) | all year |
Cited limits by parameter: Michigan's rules and the federal ones.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/MI0055204 · MCP: https://passage-data.com/mcp