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Bad River WTR & SWR Utiilites

Sewage treatment plant, Odanah, Wisconsin. NPDES permit WI0036587 expired Jul 15, 2024; its limits still apply. Last 12 months: over a limit 52 times (last December 2025), 357 required values missing, 4 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 21 days after each period: form A quarterly (39 values), form Q quarterly (2 values)
Last report on file
December 2025
Oct 2024 – Sep 2025
164 values over a limit, 476 required values missing, 16 of 16 reports late

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

All 52 values over a limit
Period endingParameterReportedLimitOver by
October 2025BOD, 5-day, 20 deg. C, monthly average38.5 mg/L≤ 30 mg/L28%
October 2025BOD, 5-day, 20 deg. C, monthly average38.5 mg/L≤ 30 mg/L28%
October 2025BOD, 5-day, 20 deg. C, weekly average66 mg/L≤ 45 mg/L47%
October 2025BOD, 5-day, 20 deg. C, weekly average66 mg/L≤ 45 mg/L47%
October 2025BOD, 5-day, percent removal, minimum80.2 %≥ 85 %32%
October 2025BOD, 5-day, percent removal, minimum80.2 %≥ 85 %32%
October 2025E. coli, 30-day geometric mean160 #/100mL≤ 126 #/100mL27%
October 2025E. coli, 30-day geometric mean160 #/100mL≤ 126 #/100mL27%
October 2025E. coli, daily maximum2000 #/100mL≤ 235 #/100mL751%
October 2025E. coli, daily maximum2000 #/100mL≤ 235 #/100mL751%
October 2025Phosphorus, total [as P], monthly average1.7 mg/L≤ 1 mg/L70%
October 2025Phosphorus, total [as P], monthly average1.7 mg/L≤ 1 mg/L70%
October 2025Phosphorus, total [as P], weekly average3.3 mg/L≤ 2 mg/L65%
October 2025Phosphorus, total [as P], weekly average3.3 mg/L≤ 2 mg/L65%
October 2025Solids, suspended percent removal, minimum % removal73.5 %≥ 85 %77%
October 2025Solids, suspended percent removal, minimum % removal73.5 %≥ 85 %77%
October 2025Solids, total suspended, monthly average51 mg/L≤ 30 mg/L70%
October 2025Solids, total suspended, monthly average51 mg/L≤ 30 mg/L70%
October 2025Solids, total suspended, weekly average104.5 mg/L≤ 45 mg/L132%
October 2025Solids, total suspended, weekly average104.5 mg/L≤ 45 mg/L132%
November 2025BOD, 5-day, 20 deg. C, monthly average52.1 mg/L≤ 30 mg/L74%
November 2025BOD, 5-day, 20 deg. C, monthly average52.1 mg/L≤ 30 mg/L74%
November 2025BOD, 5-day, 20 deg. C, weekly average89.5 mg/L≤ 45 mg/L99%
November 2025BOD, 5-day, 20 deg. C, weekly average89.5 mg/L≤ 45 mg/L99%
November 2025BOD, 5-day, percent removal, minimum74 %≥ 85 %73%
November 2025BOD, 5-day, percent removal, minimum74 %≥ 85 %73%
November 2025E. coli, 30-day geometric mean782 #/100mL≤ 126 #/100mL521%
November 2025E. coli, 30-day geometric mean782 #/100mL≤ 126 #/100mL521%
November 2025E. coli, daily maximum2000 #/100mL≤ 235 #/100mL751%
November 2025E. coli, daily maximum2000 #/100mL≤ 235 #/100mL751%
November 2025Phosphorus, total [as P], monthly average1.2 lb/d≤ 1.17 lb/d3%
November 2025Phosphorus, total [as P], monthly average1.2 lb/d≤ 1.17 lb/d3%
November 2025Phosphorus, total [as P], monthly average2.4 mg/L≤ 1 mg/L140%
November 2025Phosphorus, total [as P], monthly average2.4 mg/L≤ 1 mg/L140%
November 2025Phosphorus, total [as P], weekly average4 lb/d≤ 2.34 lb/d71%
November 2025Phosphorus, total [as P], weekly average4 lb/d≤ 2.34 lb/d71%
November 2025Phosphorus, total [as P], weekly average8.2 mg/L≤ 2 mg/L310%
November 2025Phosphorus, total [as P], weekly average8.2 mg/L≤ 2 mg/L310%
November 2025Solids, suspended percent removal, minimum % removal62.2 %≥ 85 %152%
November 2025Solids, suspended percent removal, minimum % removal62.2 %≥ 85 %152%
November 2025Solids, total suspended, monthly average40.6 lb/d≤ 35 lb/d16%
November 2025Solids, total suspended, monthly average40.6 lb/d≤ 35 lb/d16%
November 2025Solids, total suspended, monthly average82.4 mg/L≤ 30 mg/L175%
November 2025Solids, total suspended, monthly average82.4 mg/L≤ 30 mg/L175%
November 2025Solids, total suspended, weekly average146.4 lb/d≤ 53 lb/d176%
November 2025Solids, total suspended, weekly average146.4 lb/d≤ 53 lb/d176%
November 2025Solids, total suspended, weekly average298 mg/L≤ 45 mg/L562%
November 2025Solids, total suspended, weekly average298 mg/L≤ 45 mg/L562%
December 2025E. coli, 30-day geometric mean234 #/100mL≤ 126 #/100mL86%
December 2025E. coli, 30-day geometric mean234 #/100mL≤ 126 #/100mL86%
December 2025E. coli, daily maximum2000 #/100mL≤ 235 #/100mL751%
December 2025E. coli, daily maximum2000 #/100mL≤ 235 #/100mL751%

Limits in force (41)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimum≥ 5 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 35 lb/dall year
BOD, 5-day, 20 deg. Cweekly average≤ 53 lb/dall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cweekly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cmonthly averagereport only (lb/d)all year
BOD, 5-day, 20 deg. Cweekly averagereport only (lb/d)all year
pHminimum≥ 6 SUall year
pHmaximum≤ 8.5 SUall year
pHminimumreport only (SU)all year
pHmaximumreport only (SU)all year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 35 lb/dall year
Solids, total suspendedweekly average≤ 53 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedweekly averagereport only (mg/L)all year
Solids, total suspendedmonthly averagereport only (lb/d)all year
Solids, total suspendedweekly averagereport only (lb/d)all year
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]monthly average≤ 1 mg/Lall year
Phosphorus, total [as P]weekly average≤ 2 mg/Lall year
Phosphorus, total [as P]monthly average≤ 1.17 lb/dall year
Phosphorus, total [as P]weekly average≤ 2.34 lb/dall year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (lb/d)all year
Sulfate, total [as SO4]monthly averagereport only (mg/L)all year
Sulfate, total [as SO4]daily maximumreport only (mg/L)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantweekly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
E. coli30-day geometric mean≤ 126 #/100mLall year
E. colidaily maximum≤ 235 #/100mLall year
Mercury, total [as Hg]daily maximumreport only (ng/L)all year
Mercury, total [as Hg]daily maximumreport only (ng/L)all year
BOD, 5-day, percent removalminimum≥ 85 %all year
Solids, suspended percent removalminimum % removal≥ 85 %all year
Outfall observation,visual, y/n responsevaluereport only (Y=0;N=1)all year

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/WI0036587 · MCP: https://passage-data.com/mcp