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Sewage treatment plant, Chilton, Wisconsin. NPDES permit WI0022799 expired Jun 30, 2023; its limits still apply. Last 12 months: no values over a limit, 198 required values missing, 12 of 33 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | Oct–Dec | 001 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | Oct–Dec | 001 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 6 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 | ≤ 10 mg/L | May–Oct | 001 |
| Solids, total suspended | weekly average | ≤ 15 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Solids, total suspended | monthly average | ≤ 10 mg/L | May–Oct | 001 |
| Solids, total suspended | monthly average | ≤ 15 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 3.1 mg/L | Jul | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 3.2 mg/L | Aug | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 4.6 mg/L | Sep | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 7.3 mg/L | Oct | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 13 mg/L | Nov | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 11 mg/L | Dec | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 11 mg/L | Jan | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 11 mg/L | Feb | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 11 mg/L | Mar | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 14 mg/L | Apr | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 5.4 mg/L | May | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 3.8 mg/L | Jun | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.4 mg/L | Jul | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.3 mg/L | Aug | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3.2 mg/L | Sep | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 6 mg/L | Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 13 mg/L | Nov | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 9.6 mg/L | Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 7.9 mg/L | Jan | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 8.5 mg/L | Feb | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 11 mg/L | Mar | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 14 mg/L | Apr | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 5.4 mg/L | May | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3.8 mg/L | Jun | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Jul | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Aug | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Sep | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Oct | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Nov | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Jan | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Feb | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Mar | 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 | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Jun | 001 |
| Phosphorus, total [as P] | monthly average | ≤ 1 mg/L | all year | 001 |
| Chloride [as Cl] | daily maximum | report only (mg/L) | all year | 001 |
| Chlorine, total residual | weekly average | ≤ 6.5 ug/L | May–Sep | 001 |
| Chlorine, total residual | monthly average | ≤ 6.5 ug/L | May–Sep | 001 |
| Chlorine, total residual | daily maximum | ≤ 21 ug/L | May–Sep | 001 |
| Coliform, fecal general | weekly geometric mean | ≤ 656 #/100mL | May–Sep | 001 |
| Coliform, fecal general | geometric mean | ≤ 400 #/100mL | May–Sep | 001 |
| BOD, carbonaceous [5 day, 5 C] | weekly average | ≤ 9.6 mg/L | May–Oct | 001 |
| BOD, carbonaceous [5 day, 5 C] | weekly average | ≤ 15 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| BOD, carbonaceous [5 day, 5 C] | monthly average | ≤ 9.6 mg/L | May–Oct | 001 |
| BOD, carbonaceous [5 day, 5 C] | monthly average | ≤ 15 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Chloride [as Cl] | daily maximum | ≤ 830 mg/L | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 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 |
| BOD, carbonaceous [5 day, 5 C] | monthly average | report only (mg/L) | all year | 701 |
| BOD, carbonaceous [5 day, 5 C] | daily maximum | report only (mg/L) | 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/WI0022799 · MCP: https://passage-data.com/mcp