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Butte des Morts Consolidated S. D. No. 1

Sewage treatment plant, Winneconne, Wisconsin. NPDES permit WI0032492 expired Oct 31, 2023; its limits still apply. Last 12 months: over a limit 3 times (last June 2026), 50 required values missing, 16 of 22 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form A monthly (16 values), outfall 701 form A monthly (8 values)
Last report on file
June 2026
Oct 2024 – Sep 2025
4 values over a limit, 25 required values missing, 24 of 24 reports late

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

Period endingParameterReportedLimitOver by
April 2026pH, daily maximum9.26≤ 9 SU—
May 2026Solids, total suspended, monthly average66.25≤ 60 mg/L10%
June 2026Solids, total suspended, monthly average62≤ 60 mg/L3%

Limits in force (24)

ParameterStatisticLimitMonthsOutfall
pHdaily minimum≥ 6 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 60 mg/Lall year001
Nitrogen, ammonia total [as N]weekly average≤ 108 mg/Lall year001
Nitrogen, ammonia total [as N]monthly average≤ 108 mg/Lall year001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P]monthly average≤ 5.3 mg/Lall year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residualweekly average≤ 38 ug/LMay–Sep001
Chlorine, total residualmonthly average≤ 38 ug/LMay–Sep001
Chlorine, total residualdaily maximum≤ 38 ug/LMay–Sep001
Coliform, fecal generalweekly geometric mean≤ 660 #/100mLMay–Sep001
Coliform, fecal generalgeometric mean≤ 400 #/100mLMay–Sep001
BOD, carbonaceous [5 day, 5 C]weekly average≤ 40 mg/Lall year001
BOD, carbonaceous [5 day, 5 C]monthly average≤ 25 mg/Lall year001
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
BOD, carbonaceous [5 day, 5 C]monthly averagereport only (mg/L)all year701
BOD, carbonaceous [5 day, 5 C]daily maximumreport only (mg/L)all year701

How strict are these limits?

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/WI0032492 · MCP: https://passage-data.com/mcp