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Red Cliff Band WWTF

Sewage treatment plant, Bayfield, Wisconsin. NPDES permit WI0049727 expired Sep 23, 2024; its limits still apply. Last 12 months: over a limit once (last October 2025), 258 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 82 days after each period: form A quarterly (64 values), form Q quarterly (1 value), form AU, form QU
Last report on file
December 2025
Oct 2024 – Sep 2025
22 values over a limit, 0 required values missing, 1 of 16 reports late

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

Period endingParameterReportedLimitOver by
October 2025Phosphorus, total [as P], monthly average2 mg/L≤ 1 mg/L100%

Limits in force (98)

ParameterStatisticLimitMonths
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 30 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. Cweekly average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (lb/d)all year
BOD, 5-day, 20 deg. Cmonthly averagereport only (lb/d)all year
BOD, 5-day, 20 deg. Cmonthly averagereport only (lb/d)all year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cmonthly averagereport only (lb/d)all year
BOD, 5-day, 20 deg. Cmonthly averagereport only (lb/d)all year
BOD, 5-day, 20 deg. Cmonthly averagereport only (lb/d)all year
pHdaily minimum≥ 6 SUall year
pHdaily minimum≥ 6 SUall year
pHminimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
pHdaily maximum≤ 9 SUall year
pHmaximum≤ 9 SUall year
pHdaily minimumreport only (SU)all year
pHdaily minimumreport only (SU)all year
pHminimumreport only (SU)all year
pHdaily maximumreport only (SU)all year
pHdaily maximumreport only (SU)all year
pHmaximumreport only (SU)all year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly averagereport only (lb/d)all year
Solids, total suspendedmonthly averagereport only (lb/d)all year
Solids, total suspendedmonthly averagereport only (lb/d)all year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedmonthly averagereport only (lb/d)all year
Solids, total suspendedmonthly averagereport only (lb/d)all year
Solids, total suspendedmonthly averagereport only (lb/d)all year
Nitrogen, ammonia total [as N]monthly average≤ 16.21 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 16.21 mg/Lall year
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]daily maximum≤ 16.21 mg/Lall year
Nitrogen, ammonia total [as N]daily maximum≤ 16.21 mg/Lall 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]monthly average≤ 1 mg/Lall 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]weekly average≤ 2 mg/Lall year
Phosphorus, total [as P]weekly average≤ 2 mg/Lall year
Phosphorus, total [as P]monthly average≤ 1.8 lb/dall year
Phosphorus, total [as P]monthly average≤ 1.8 lb/dall year
Phosphorus, total [as P]monthly average≤ 1.8 lb/dall year
Phosphorus, total [as P]weekly average≤ 3.7 lb/dall year
Phosphorus, total [as P]weekly average≤ 3.7 lb/dall year
Phosphorus, total [as P]weekly average≤ 3.7 lb/dall year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantmonthly 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. coli30-day geometric mean≤ 126 #/100mLall year
E. coli30-day geometric mean≤ 126 #/100mLFeb, May, Jun, Jul, Aug, Sep, Oct
E. colidaily maximum≤ 235 #/100mLall year
E. colidaily maximum≤ 235 #/100mLall year
E. colidaily maximum≤ 235 #/100mLFeb, May, Jun, Jul, Aug, Sep, Oct
Mercury, total [as Hg]monthly average≤ 1.3 ng/Lall year
Mercury, total [as Hg]monthly average≤ 1.3 ng/Lall year
Mercury, total [as Hg]monthly average≤ 1.3 ng/Lall year
Mercury, total [as Hg]daily maximum≤ 1.9 ng/Lall year
Mercury, total [as Hg]daily maximum≤ 1.9 ng/Lall year
Mercury, total [as Hg]daily maximum≤ 1.9 ng/Lall year
Mercury, total [as Hg]monthly average≤ .0000024 lb/dall year
Mercury, total [as Hg]monthly average≤ .0000024 lb/dall year
Mercury, total [as Hg]monthly average≤ .0000024 lb/dall year
Mercury, total [as Hg]daily maximum≤ .0000035 lb/dall year
Mercury, total [as Hg]daily maximum≤ .0000035 lb/dall year
Mercury, total [as Hg]daily maximum≤ .0000035 lb/dall 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 value≥ 85 %all year
BOD, 5-day, percent removalminimum value≥ 85 %all year
BOD, 5-day, percent removalminimum value≥ 85 %all year
Solids, suspended percent removalminimum value≥ 85 %all year
Solids, suspended percent removalminimum value≥ 85 %all year
Solids, suspended percent removalminimum value≥ 85 %all year
Outfall observation,visual, y/n responsemonthly averagereport only (N=0;Y=1)all year
Outfall observation,visual, y/n responsemonthly averagereport only (N=0;Y=1)all year
Outfall observation,visual, y/n responsemonthly averagereport only (N=0;Y=1)all year

How strict are these limits?

Cited limits by parameter: Wisconsin'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/WI0049727 · MCP: https://passage-data.com/mcp