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Sewage treatment plant, Herbster, Wisconsin. NPDES permit WI0032069 expired Jun 30, 2023; its limits still apply. Last 12 months: over a limit 3 times (last April 2026), 14 required values missing, 12 of 16 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| November 2025 | Flow, in conduit or thru treatment plant, daily maximum | .119 | ≤ .117 MGD | 2% |
| April 2026 | Flow, in conduit or thru treatment plant, daily maximum | .1253 | ≤ .117 MGD | 7% |
| April 2026 | Phosphorus, total [as P], monthly average | 4.28 | ≤ 3.9 mg/L | 10% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | Mar, Apr, May, Sep, Oct, Nov | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | Mar, Apr, May, Sep, Oct, Nov | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | Mar, Apr, May, Sep, Oct, Nov | 001 |
| pH | daily minimum | ≥ 6 SU | Mar, Apr, May, Sep, Oct, Nov | 001 |
| pH | daily maximum | ≤ 9 SU | Mar, Apr, May, Sep, Oct, Nov | 001 |
| Solids, total suspended | weekly average | ≤ 45 mg/L | Mar, Apr, May, Sep, Oct, Nov | 001 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | Mar, Apr, May, Sep, Oct, Nov | 001 |
| Solids, total suspended | daily maximum | report only (mg/L) | Mar, Apr, May, Sep, Oct, Nov | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Mar, Apr, May, Sep, Oct, Nov | 001 |
| Phosphorus, total [as P] | monthly average | ≤ 3.9 mg/L | Mar, Apr, May, Sep, Oct, Nov | 001 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | Mar, Apr, May, Sep, Oct, Nov | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | Mar, Apr, May, Sep, Oct, Nov | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ .117 MGD | Mar, Apr, May, Sep, Oct, Nov | 001 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 701 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 701 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 701 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 701 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 701 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 701 |
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/WI0032069 · MCP: https://passage-data.com/mcp