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Village of Winnebago

Sewage treatment plant, Winnebago, Nebraska. NPDES permit NE0113212 expired Jan 30, 2025; its limits still apply. Last 12 months: over a limit 10 times (last September 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A quarterly (17 values), outfall 001 form B quarterly (17 values), outfall 002 form I quarterly (4 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
16 values over a limit, 0 required values missing, 10 of 36 reports late

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

Period endingParameterReportedLimitOver by
October 2025Oxygen, dissolved [DO], minimum2.8 mg/L≥ 5 mg/L44%
December 2025Oxygen, dissolved [DO], minimum4.7 mg/L≥ 5 mg/L6%
February 2026BOD, 5-day, 20 deg. C, monthly average39.8 mg/L≤ 30 mg/L33%
February 2026BOD, 5-day, percent removal, monthly average minimum79 %≥ 85 %40%
February 2026Solids, suspended percent removal, monthly average minimum70 %≥ 85 %100%
April 2026BOD, 5-day, 20 deg. C, monthly average38.7 mg/L≤ 30 mg/L29%
July 2026Oxygen, dissolved [DO], minimum3.5 mg/L≥ 5 mg/L30%
July 2026Solids, suspended percent removal, monthly average minimum80 %≥ 85 %33%
August 2026Oxygen, dissolved [DO], minimum4.6 mg/L≥ 5 mg/L8%
September 2026Oxygen, dissolved [DO], minimum2.7 mg/L≥ 5 mg/L46%

Limits in force (46)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitvaluereport only (deg F)all year001
Temperature, water deg. fahrenheitvaluereport only (deg F)all year001
Oxygen, dissolved [DO]minimum≥ 5 mg/Lall year001
Oxygen, dissolved [DO]minimum≥ 5 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year001
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year001
pHminimum> 6.5 SUall year001
pHminimum≥ 6.5 SUall year001
pHmaximum< 9 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendedmonthly average≤ 80 mg/Lall year001
Solids, total suspendedweekly average≤ 120 mg/Lall year001
Solids, total suspendedweekly average≤ 45 mg/Lall year001
Nitrogen, total [as N]valuereport only (mg/L)all year001
Nitrogen, total [as N]valuereport only (mg/L)all year001
Nitrogen, ammonia total [as N]monthly average≤ 10.87 mg/LJun–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 10.26 mg/LMar–May001
Nitrogen, ammonia total [as N]monthly average≤ 10.16 mg/LJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 10.87 mg/LJun–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 10.26 mg/LMar–May001
Nitrogen, ammonia total [as N]monthly average≤ 10.16 mg/LJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 30.78 mg/LJun–Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 20.58 mg/LMar–May001
Nitrogen, ammonia total [as N]daily maximum≤ 17.01 mg/LJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 20.58 mg/LMar–May001
Nitrogen, ammonia total [as N]daily maximum≤ 30.78 mg/LJun–Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 17.01 mg/LJan, Feb, Nov, Dec001
Phosphorus, total [as P]valuereport only (mg/L)all year001
Phosphorus, total [as P]valuereport only (mg/L)all year001
Flow, in conduit or thru treatment plantaveragereport only (MGD)all year001
Flow, in conduit or thru treatment plantaveragereport only (MGD)all year001
E. colimonthly geometric mean≤ 126 CFU/100mLMay–Sep001
E. colimonthly geometric mean≤ 126 CFU/100mLMay–Sep001
E. colisingle sample≤ 298 CFU/100mLMay–Sep001
E. colisingle sample≤ 298 CFU/100mLMay–Sep001
BOD, 5-day, percent removalminimum≥ 85 %all year001
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year001
Solids, suspended percent removalminimum≥ 85 %all year001
Solids, suspended percent removalmonthly average minimum≥ 85 %all year001
BOD, 5-day, 20 deg. Caveragereport only (mg/L)all year002
pHaveragereport only (SU)all year002
Solids, total suspendedaveragereport only (mg/L)all year002
Flow, in conduit or thru treatment plantaveragereport only (MGD)all year002

How strict are these limits?

Cited limits by parameter: Nebraska'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/NE0113212 · MCP: https://passage-data.com/mcp