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Westby Coop Creamery

Cheese, Natural And Processed, Westby, Wisconsin. NPDES permit WI0070645 expired Mar 31, 2023; its limits still apply. Last 12 months: over a limit 39 times (last June 2026), 41 required values missing, 18 of 25 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 002 form A monthly (13 values), outfall 002 form Q quarterly (5 values), outfall 702 form A monthly (6 values)
Last report on file
June 2026
Oct 2024 – Sep 2025
47 values over a limit, 4 required values missing, 24 of 28 reports late

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

All 39 values over a limit
Period endingParameterReportedLimitOver by
October 2025Phosphorus, total [as P], rolling average12.75≤ 8.75 mg/L46%
November 2025BOD, 5-day, 20 deg. C, daily maximum65≤ 58 lb/d12%
November 2025BOD, 5-day, 20 deg. C, daily maximum73≤ 40 mg/L83%
November 2025BOD, 5-day, 20 deg. C, monthly average32.5≤ 23 lb/d41%
November 2025BOD, 5-day, 20 deg. C, monthly average33≤ 20 mg/L65%
November 2025Phosphorus, total [as P], rolling average13.5≤ 8.75 mg/L54%
December 2025BOD, 5-day, 20 deg. C, daily maximum62≤ 58 lb/d7%
December 2025BOD, 5-day, 20 deg. C, daily maximum71≤ 40 mg/L78%
December 2025BOD, 5-day, 20 deg. C, monthly average34.8≤ 23 lb/d51%
December 2025BOD, 5-day, 20 deg. C, monthly average37.5≤ 20 mg/L88%
December 2025Phosphorus, total [as P], rolling average15.8≤ 8.75 mg/L81%
January 2026BOD, 5-day, 20 deg. C, daily maximum51≤ 40 mg/L28%
January 2026BOD, 5-day, 20 deg. C, monthly average28.75≤ 23 lb/d25%
January 2026BOD, 5-day, 20 deg. C, monthly average31.25≤ 20 mg/L56%
January 2026Phosphorus, total [as P], rolling average12.45≤ 8.75 mg/L42%
February 2026BOD, 5-day, 20 deg. C, monthly average26.625≤ 20 mg/L33%
February 2026Phosphorus, total [as P], rolling average9.45≤ 8.75 mg/L8%
February 2026Solids, total suspended, monthly average39.375≤ 35 lb/d13%
March 2026BOD, 5-day, 20 deg. C, monthly average27≤ 20 mg/L35%
April 2026BOD, 5-day, 20 deg. C, daily maximum46≤ 40 mg/L15%
April 2026BOD, 5-day, 20 deg. C, daily maximum70≤ 58 lb/d21%
April 2026BOD, 5-day, 20 deg. C, monthly average29.1111≤ 20 mg/L46%
April 2026BOD, 5-day, 20 deg. C, monthly average39≤ 23 lb/d70%
April 2026Phosphorus, total [as P], rolling average10.35≤ 8.75 mg/L18%
April 2026Solids, total suspended, daily maximum90≤ 87 lb/d3%
April 2026Solids, total suspended, monthly average57.4444≤ 35 lb/d64%
May 2026BOD, 5-day, 20 deg. C, daily maximum80≤ 58 lb/d38%
May 2026BOD, 5-day, 20 deg. C, daily maximum81≤ 40 mg/L103%
May 2026BOD, 5-day, 20 deg. C, monthly average33.875≤ 23 lb/d47%
May 2026BOD, 5-day, 20 deg. C, monthly average43.5≤ 20 mg/L118%
May 2026Phosphorus, total [as P], rolling average12.65≤ 8.75 mg/L45%
May 2026Solids, total suspended, monthly average47.875≤ 35 lb/d37%
May 2026Solids, total suspended, monthly average65.625≤ 60 mg/L9%
June 2026BOD, 5-day, 20 deg. C, daily maximum75≤ 40 mg/L88%
June 2026BOD, 5-day, 20 deg. C, daily maximum82≤ 58 lb/d41%
June 2026BOD, 5-day, 20 deg. C, monthly average35.75≤ 20 mg/L79%
June 2026BOD, 5-day, 20 deg. C, monthly average37.75≤ 23 lb/d64%
June 2026Phosphorus, total [as P], rolling average11.25≤ 8.75 mg/L29%
June 2026Solids, total suspended, monthly average37.375≤ 35 lb/d7%

Limits in force (24)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]daily minimum≥ 4 mg/Lall year002
BOD, 5-day, 20 deg. Cmonthly average≤ 20 mg/Lall year002
BOD, 5-day, 20 deg. Cdaily maximum≤ 40 mg/Lall year002
BOD, 5-day, 20 deg. Cmonthly average≤ 23 lb/dall year002
BOD, 5-day, 20 deg. Cdaily maximum≤ 58 lb/dall year002
pHdaily minimum≥ 6 SUall year002
pHdaily maximum≤ 9 SUall year002
Solids, total suspendedmonthly average≤ 60 mg/Lall year002
Solids, total suspendedmonthly average≤ 35 lb/dall year002
Solids, total suspendeddaily maximum≤ 87 lb/dall year002
Nitrogen, total [as N]quarterly maximumreport only (mg/L)all year002
Nitrogen, ammonia total [as N]quarterly maximumreport only (mg/L)all year002
Nitrogen, Kjeldahl, total [as N]quarterly maximumreport only (mg/L)all year002
Nitrite + Nitrate total [as N]quarterly maximumreport only (mg/L)all year002
Phosphorus, total [as P]rolling average≤ 8.75 mg/Lall year002
Chloride [as Cl]quarterly maximumreport only (mg/L)all year002
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year702
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year702
Solids, total suspendedmonthly averagereport only (mg/L)all year702
Solids, total suspendeddaily maximumreport only (mg/L)all year702
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year702
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year702

How strict are these limits?

Cited limits by parameter: Wisconsin's rules and the federal ones.

Same industry: the 75 Food and Kindred Products permits in Wisconsin.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/WI0070645 · MCP: https://passage-data.com/mcp