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Sewerage Systems, North Freedom, Wisconsin. NPDES permit WI0035998 expired Jun 30, 2021; its limits still apply. Last 12 months: over a limit 12 times (last June 2026), 16 required values missing, 7 of 20 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| December 2025 | BOD, 5-day, 20 deg. C, monthly average | 43.6 | ≤ 30 mg/L | 45% |
| December 2025 | BOD, 5-day, 20 deg. C, weekly average | 53 | ≤ 45 mg/L | 18% |
| January 2026 | BOD, 5-day, 20 deg. C, monthly average | 37.5 | ≤ 30 mg/L | 25% |
| January 2026 | BOD, 5-day, 20 deg. C, weekly average | 65 | ≤ 45 mg/L | 44% |
| February 2026 | BOD, 5-day, 20 deg. C, monthly average | 46.75 | ≤ 30 mg/L | 56% |
| February 2026 | BOD, 5-day, 20 deg. C, weekly average | 53 | ≤ 45 mg/L | 18% |
| March 2026 | BOD, 5-day, 20 deg. C, monthly average | 46 | ≤ 30 mg/L | 53% |
| March 2026 | BOD, 5-day, 20 deg. C, weekly average | 60 | ≤ 45 mg/L | 33% |
| May 2026 | BOD, 5-day, 20 deg. C, monthly average | 53.5 | ≤ 30 mg/L | 78% |
| May 2026 | BOD, 5-day, 20 deg. C, weekly average | 64 | ≤ 45 mg/L | 42% |
| June 2026 | BOD, 5-day, 20 deg. C, monthly average | 55.8 | ≤ 30 mg/L | 86% |
| June 2026 | BOD, 5-day, 20 deg. C, weekly average | 84 | ≤ 45 mg/L | 87% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year | 001 |
| pH | daily minimum | ≥ 6 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 60 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 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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Your permit document is the final word. As JSON: /api/v1/permits/WI0035998 · MCP: https://passage-data.com/mcp