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Kossuth Sanitary District No.

Sewage treatment plant, Kossuth Tn, Wisconsin. NPDES permit WI0035874 expired Jun 30, 2022; its limits still apply. Last 12 months: over a limit 5 times (last June 2026), 48 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 (19 values), outfall 701 form A monthly (4 values)
Last report on file
June 2026
Oct 2024 – Sep 2025
2 values over a limit, 2 required values missing, 18 of 24 reports late

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

Period endingParameterReportedLimitOver by
December 2025Nitrogen, ammonia total [as N], weekly average32≤ 26 mg/L23%
February 2026Nitrogen, ammonia total [as N], monthly average28.775≤ 21 mg/L37%
February 2026Nitrogen, ammonia total [as N], weekly average39.3333≤ 26 mg/L51%
June 2026Copper, total recoverable, daily maximum220≤ 58 ug/L279%
June 2026Copper, total recoverable, monthly average220≤ 34 ug/L547%

Limits in force (32)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]daily minimum≥ 4 mg/Lall year001
BOD, 5-day, 20 deg. Cweekly average≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 20 mg/Lall year001
pHdaily minimum≥ 6 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedweekly average≤ 30 mg/Lall year001
Solids, total suspendedmonthly average≤ 20 mg/Lall year001
Nitrogen, ammonia total [as N]weekly average≤ 24 mg/LJun–Sep001
Nitrogen, ammonia total [as N]weekly average≤ 24 mg/LOct001
Nitrogen, ammonia total [as N]weekly average≤ 26 mg/LJan, Feb, Mar, Nov, Dec001
Nitrogen, ammonia total [as N]weekly average≤ 26 mg/LApr, May001
Nitrogen, ammonia total [as N]monthly average≤ 7.1 mg/LJun–Sep001
Nitrogen, ammonia total [as N]monthly average≤ 9.7 mg/LOct001
Nitrogen, ammonia total [as N]monthly average≤ 21 mg/LJan, Feb, Mar, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 12 mg/LApr, May001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jun–Sep001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Oct001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jan, Feb, Mar, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Apr, May001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
Chloride [as Cl]daily maximumreport only (mg/L)all year001
Copper, total recoverableweekly average≤ 34 ug/Lall year001
Copper, total recoverablemonthly average≤ 34 ug/Lall year001
Copper, total recoverabledaily maximum≤ 58 ug/Lall year001
Copper, total recoverablemonthly averagereport only (lb/d)all year001
Copper, total recoverabledaily maximumreport only (lb/d)all 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
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

How strict are these limits?

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

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/WI0035874 · MCP: https://passage-data.com/mcp