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Campbellsport Wastewater Treat

Sewage treatment plant, Campbellsport, Wisconsin. NPDES permit WI0020818 expired Jun 30, 2023; its limits still apply. Last 12 months: over a limit 11 times (last June 2026), 58 required values missing, 6 of 22 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form A monthly (22 values), outfall 701 form A monthly (6 values)
Last report on file
June 2026
Oct 2024 – Sep 2025
6 values over a limit, 31 required values missing, 14 of 24 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
October 2025Chloride [as Cl], monthly average625.5≤ 460 mg/L36%
October 2025Chloride [as Cl], weekly average702.6667≤ 460 mg/L53%
October 2025Oxygen, dissolved [DO], daily minimum6.78≥ 7 mg/L3%
November 2025Phosphorus, total [as P], monthly average3.28≤ 2.4 mg/L37%
December 2025Chloride [as Cl], weekly average514.6667≤ 460 mg/L12%
December 2025Phosphorus, total [as P], monthly average3.034≤ 2.4 mg/L26%
March 2026BOD, 5-day, 20 deg. C, weekly average14≤ 10 mg/L40%
April 2026BOD, 5-day, 20 deg. C, monthly average11.1111≤ 10 mg/L11%
April 2026BOD, 5-day, 20 deg. C, weekly average16.5≤ 10 mg/L65%
May 2026BOD, 5-day, 20 deg. C, weekly average11.5≤ 10 mg/L15%
June 2026Phosphorus, total [as P], monthly average3.3211≤ 2.4 mg/L38%

Limits in force (69)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]daily minimum≥ 7 mg/Lall year001
BOD, 5-day, 20 deg. Cweekly average≤ 10 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 10 mg/Lall year001
pHdaily minimum≥ 6 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedweekly average≤ 10 mg/Lall year001
Solids, total suspendedmonthly average≤ 10 mg/Lall year001
Solids, total suspendedmonthly averagereport only (lb/d)all year001
Solids, total suspendeddaily maximumreport only (lb/d)all year001
Nitrogen, ammonia total [as N]weekly average≤ 2.9 mg/LJul001
Nitrogen, ammonia total [as N]weekly average≤ 3 mg/LAug001
Nitrogen, ammonia total [as N]weekly average≤ 4.7 mg/LSep001
Nitrogen, ammonia total [as N]weekly average≤ 6.7 mg/LOct001
Nitrogen, ammonia total [as N]weekly average≤ 11 mg/LNov001
Nitrogen, ammonia total [as N]weekly average≤ 11 mg/LDec001
Nitrogen, ammonia total [as N]weekly average≤ 11 mg/LJan001
Nitrogen, ammonia total [as N]weekly average≤ 11 mg/LFeb001
Nitrogen, ammonia total [as N]weekly average≤ 13 mg/LMar, Apr001
Nitrogen, ammonia total [as N]weekly average≤ 8.2 mg/LMay001
Nitrogen, ammonia total [as N]weekly average≤ 4 mg/LJun001
Nitrogen, ammonia total [as N]monthly average≤ 2.9 mg/LJul001
Nitrogen, ammonia total [as N]monthly average≤ 3 mg/LAug001
Nitrogen, ammonia total [as N]monthly average≤ 4.5 mg/LSep001
Nitrogen, ammonia total [as N]monthly average≤ 4.4 mg/LOct001
Nitrogen, ammonia total [as N]monthly average≤ 9.7 mg/LNov001
Nitrogen, ammonia total [as N]monthly average≤ 8.5 mg/LDec001
Nitrogen, ammonia total [as N]monthly average≤ 8.3 mg/LJan001
Nitrogen, ammonia total [as N]monthly average≤ 9.6 mg/LFeb001
Nitrogen, ammonia total [as N]monthly average≤ 13 mg/LMar, Apr001
Nitrogen, ammonia total [as N]monthly average≤ 8.2 mg/LMay001
Nitrogen, ammonia total [as N]monthly average≤ 4 mg/LJun001
Nitrogen, ammonia total [as N]daily maximum≤ 17 mg/LJul001
Nitrogen, ammonia total [as N]daily maximum≤ 17 mg/LAug001
Nitrogen, ammonia total [as N]daily maximum≤ 17 mg/LSep001
Nitrogen, ammonia total [as N]daily maximum≤ 17 mg/LOct001
Nitrogen, ammonia total [as N]daily maximum≤ 17 mg/LNov001
Nitrogen, ammonia total [as N]daily maximum≤ 17 mg/LDec001
Nitrogen, ammonia total [as N]daily maximum≤ 17 mg/LJan001
Nitrogen, ammonia total [as N]daily maximum≤ 17 mg/LFeb001
Nitrogen, ammonia total [as N]daily maximum≤ 17 mg/LMar, Apr001
Nitrogen, ammonia total [as N]daily maximum≤ 17 mg/LMay001
Nitrogen, ammonia total [as N]daily maximum≤ 17 mg/LJun001
Phosphorus, total [as P]monthly average≤ 2.4 mg/Lall year001
Phosphorus, total [as P]monthly averagereport only (lb/d)all year001
Phosphorus, total [as P]daily maximumreport only (lb/d)all year001
Chloride [as Cl]weekly average≤ 460 mg/LJul, Aug, Sep, Dec001
Chloride [as Cl]weekly average≤ 460 mg/LOct001
Chloride [as Cl]weekly average≤ 470 mg/LJan001
Chloride [as Cl]weekly average≤ 500 mg/LFeb001
Chloride [as Cl]monthly averagereport only (mg/L)Jul, Aug, Sep, Dec001
Chloride [as Cl]monthly average≤ 460 mg/LOct001
Chloride [as Cl]monthly averagereport only (mg/L)Mar, Apr, May, Jun, Nov001
Chloride [as Cl]monthly average≤ 470 mg/LJan001
Chloride [as Cl]monthly average≤ 500 mg/LFeb001
Chloride [as Cl]monthly averagereport only (lb/d)Jul, Aug, Sep, Dec001
Chloride [as Cl]weekly average≤ 1800 lb/dOct001
Chloride [as Cl]monthly averagereport only (lb/d)Mar, Apr, May, Jun, Nov001
Chloride [as Cl]weekly average≤ 1840 lb/dJan001
Chloride [as Cl]weekly average≤ 1960 lb/dFeb001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Coliform, fecal generalweekly geometric mean≤ 656 #/100mLMay–Sep001
Coliform, fecal generalgeometric mean≤ 400 #/100mLMay–Sep001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year701
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year701
Solids, total suspendedmonthly averagereport only (mg/L)all year701
Solids, total suspendeddaily maximumreport only (mg/L)all year701
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year701
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year701

How strict are these limits?

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/WI0020818 · MCP: https://passage-data.com/mcp