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Sewage treatment plant, Stoddard, Wisconsin. NPDES permit WI0028304 expired Jun 30, 2023; its limits still apply. Last 12 months: over a limit 3 times (last February 2026), 38 required values missing, 19 of 23 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| December 2025 | Phosphorus, total [as P], monthly average | 1.916 | ≤ 1 mg/L | 92% |
| January 2026 | Phosphorus, total [as P], monthly average | 1.334 | ≤ 1 mg/L | 33% |
| February 2026 | Phosphorus, total [as P], monthly average | 1.2625 | ≤ 1 mg/L | 26% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | daily minimum | ≥ 6 SU | all year | 008 |
| pH | daily maximum | ≤ 9 SU | all year | 008 |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year | 008 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 008 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | Jan, Feb, Mar, Apr, May, Oct, Nov, Dec | 008 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Jan, Feb, Mar, Apr, May, Oct, Nov, Dec | 008 |
| Phosphorus, total [as P] | monthly average | ≤ 1 mg/L | all year | 008 |
| Phosphorus, total [as P] | annual average | report only (lb/yr) | all year | 008 |
| Phosphorus, total [as P] | annual maximum | report only (lb/yr) | all year | 008 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 008 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 008 |
| Coliform, fecal general | geometric mean | ≤ 400 #/100mL | May–Sep | 008 |
| BOD, carbonaceous [5 day, 5 C] | weekly average | ≤ 40 mg/L | all year | 008 |
| BOD, carbonaceous [5 day, 5 C] | monthly average | ≤ 25 mg/L | all year | 008 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 703 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 703 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 703 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 703 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 703 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 703 |
| BOD, carbonaceous [5 day, 5 C] | monthly average | report only (mg/L) | all year | 703 |
| BOD, carbonaceous [5 day, 5 C] | daily maximum | report only (mg/L) | all year | 703 |
Cited limits by parameter: Wisconsin'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/WI0028304 · MCP: https://passage-data.com/mcp