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Sewage treatment plant, Granton, Wisconsin. NPDES permit WI0020885 expired Mar 31, 2024; its limits still apply. Last 12 months: no values over a limit, 34 required values missing, 6 of 23 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | Apr | 002 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 26 mg/L | May | 002 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 8.1 mg/L | Jun | 002 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 6.6 mg/L | Jul | 002 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 6.5 mg/L | Aug | 002 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 8 mg/L | Sep | 002 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 14 mg/L | Oct | 002 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 24 mg/L | Nov | 002 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 22 mg/L | Dec | 002 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 21 mg/L | Jan | 002 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 20 mg/L | Feb | 002 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 21 mg/L | Mar | 002 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | Apr | 002 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 26 mg/L | May | 002 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 8.1 mg/L | Jun | 002 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 6.6 mg/L | Jul | 002 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 6.5 mg/L | Aug | 002 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 8 mg/L | Sep | 002 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 14 mg/L | Oct | 002 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 24 mg/L | Nov | 002 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 22 mg/L | Dec | 002 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 21 mg/L | Jan | 002 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 20 mg/L | Feb | 002 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 21 mg/L | Mar | 002 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 61 lb/d | May | 002 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 35 lb/d | Oct | 002 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 57 lb/d | Nov | 002 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 53 lb/d | Dec | 002 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 49 lb/d | Jan | 002 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 48 lb/d | Feb | 002 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 50 lb/d | Mar | 002 |
| pH | daily minimum | ≥ 6 SU | all year | 002 |
| pH | daily maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 60 mg/L | all year | 002 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 26 mg/L | Apr | 002 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 16 mg/L | May | 002 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 11 mg/L | Jun | 002 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 7.7 mg/L | Jul | 002 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 7.5 mg/L | Aug | 002 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 11 mg/L | Sep | 002 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 19 mg/L | Oct | 002 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 26 mg/L | Nov | 002 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 25 mg/L | Dec | 002 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 15 mg/L | Jan, Feb | 002 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 15 mg/L | Mar | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 24 mg/L | Apr | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 12 mg/L | May | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 8.1 mg/L | Jun | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 4.5 mg/L | Jul | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 4.1 mg/L | Aug | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 6 mg/L | Sep | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 9 mg/L | Oct | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 12 mg/L | Nov | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 11 mg/L | Dec | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 6.2 mg/L | Jan, Feb | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 14 mg/L | Mar | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Apr | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | May | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Jun | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Jul | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Aug | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Sep | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Oct | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Nov | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Dec | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Jan, Feb | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Mar | 002 |
| Phosphorus, total [as P] | monthly average | ≤ .8 mg/L | all year | 002 |
| Phosphorus, total [as P] | annual average | report only (lb/yr) | all year | 002 |
| Phosphorus, total [as P] | annual maximum | report only (lb/yr) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 288 MGD | all year | 002 |
| Coliform, fecal general | geometric mean | ≤ 400 #/100mL | May–Sep | 002 |
| 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/WI0020885 · MCP: https://passage-data.com/mcp