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Sewage treatment plant, major discharger, Two Rivers, Wisconsin. NPDES permit WI0026590 expired Dec 31, 2022; its limits still apply. Last 12 months: no values over a limit, 62 required values missing. Source: EPA ECHO, Oct 22, 2026.
| 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 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 001 |
| pH | daily minimum | ≥ 6 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 31 mg/L | Jan, Feb, Mar, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 31 mg/L | Apr | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 31 mg/L | Jan, Feb, Mar, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 30 mg/L | Apr | 001 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Jan, Feb, Mar, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Apr | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | May–Oct | 001 |
| Phosphorus, total [as P] | 6-month average | ≤ .6 mg/L | Apr, Oct | 001 |
| Phosphorus, total [as P] | monthly average | ≤ 1 mg/L | Jan, Feb, Mar, May, Jun, Jul, Aug, Sep, Nov, Dec | 001 |
| Phosphorus, total [as P] | monthly average | ≤ 1 mg/L | Apr, Oct | 001 |
| E. coli | monthly average | report only (#/100mL) | May–Sep | 001 |
| E. coli | daily maximum | report only (#/100mL) | May–Sep | 001 |
| Mercury, total recoverable | daily maximum | ≤ 13 ng/L | all year | 001 |
| Coliform, fecal general | weekly geometric mean | ≤ 780 #/100mL | all year | 001 |
| Coliform, fecal general | geometric mean | ≤ 400 #/100mL | 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 |
| Mercury, total recoverable | quarterly maximum | report only (ng/L) | 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/WI0026590 · MCP: https://passage-data.com/mcp