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South Fork Coeur D Alene River Sewer District

Sewage treatment plant, Osburn, Idaho. NPDES permit ID0021296 expired Nov 30, 2025; its limits still apply. Last 12 months: over a limit 24 times (last May 2026), 8 required values missing, 1 of 50 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form M monthly (30 values), outfall REC1 form M monthly (15 values), outfall REC2 form C monthly (12 values), outfall 001 form Q quarterly
Last report on file
August 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 61 reports late

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

All 24 values over a limit
Period endingParameterReportedLimitOver by
January 2026Cadmium, total recoverable, daily maximum.0137 mg/L≤ .0108 mg/L27%
January 2026Cadmium, total recoverable, monthly average.0137 mg/L≤ .0055 mg/L149%
January 2026Solids, suspended percent removal, monthly average minimum84.1 %≥ 85 %6%
January 2026Zinc, total recoverable, monthly average3.25 mg/L≤ 1.61 mg/L102%
April 2026BOD, 5-day, percent removal, monthly average minimum75 %≥ 85 %67%
April 2026Cadmium, total recoverable, daily maximum.0184 mg/L≤ .0108 mg/L70%
April 2026Cadmium, total recoverable, daily maximum.368 lb/d≤ .049 lb/d651%
April 2026Cadmium, total recoverable, monthly average.0184 mg/L≤ .0055 mg/L235%
April 2026Cadmium, total recoverable, monthly average.368 lb/d≤ .025 lb/d1372%
April 2026Lead, total recoverable, monthly average.21 lb/d≤ .14 lb/d50%
April 2026Solids, suspended percent removal, monthly average minimum61.4 %≥ 85 %157%
April 2026Solids, total suspended, monthly average33.5 mg/L≤ 30 mg/L12%
April 2026Solids, total suspended, weekly average65.6 mg/L≤ 45 mg/L46%
April 2026Zinc, total recoverable, daily maximum4.51 mg/L≤ 3.682 mg/L22%
April 2026Zinc, total recoverable, monthly average4.51 mg/L≤ 1.61 mg/L180%
April 2026Zinc, total recoverable, monthly average9.03 lb/d≤ 7.4 lb/d22%
May 2026BOD, 5-day, 20 deg. C, weekly average51 mg/L≤ 45 mg/L13%
May 2026Cadmium, total recoverable, daily maximum.0188 mg/L≤ .0108 mg/L74%
May 2026Cadmium, total recoverable, monthly average.0188 mg/L≤ .0055 mg/L242%
May 2026Lead, total recoverable, daily maximum.052 mg/L≤ .049 mg/L6%
May 2026Lead, total recoverable, monthly average.052 mg/L≤ .03 mg/L73%
May 2026Solids, suspended percent removal, monthly average minimum81.5 %≥ 85 %23%
May 2026Solids, total suspended, weekly average62.3 mg/L≤ 45 mg/L38%
May 2026Zinc, total recoverable, monthly average2.55 mg/L≤ 1.61 mg/L58%

Limits in force (64)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigradeinstantaneous maximumreport only (deg C)all year001
Temperature, water deg. centigrademonthly averagereport only (deg C)all year001
Temperature, water deg. centigradedaily maximumreport only (deg C)all 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. Cmonthly average≤ 138 lb/dall year001
BOD, 5-day, 20 deg. Cweekly average≤ 206 lb/dall year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year001
pHinstantaneous minimum≥ 6.5 SUall year001
pHinstantaneous maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendedweekly average≤ 45 mg/Lall year001
Solids, total suspendedmonthly average≤ 113 lb/dall year001
Solids, total suspendedannual average≤ 67.4 lb/dDec001
Solids, total suspendedweekly average≤ 206 lb/dall year001
Solids, total suspendedmonthly averagereport only (mg/L)all year001
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year001
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year001
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year001
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P]monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
Hardness, total [as CaCO3]monthly averagereport only (mg/L)all year001
Hardness, total [as CaCO3]daily maximumreport only (mg/L)all year001
Copper, total recoverablemonthly averagereport only (mg/L)all year001
Copper, total recoverabledaily maximumreport only (mg/L)all year001
E. coli, MTEC-MFmonthly geometric mean≤ 126 #/100mLall year001
E. coli, MTEC-MFinstantaneous maximumreport only (#/100mL)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
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Chlorine, total residualmonthly averagereport only (mg/L)all year001
Chlorine, total residualdaily maximumreport only (mg/L)all year001
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year001
Solids, suspended percent removalmonthly average minimum≥ 85 %all year001
Temperature, water deg. centigrademaximum daily averagereport only (deg C)all yearREC1
Temperature, water deg. centigrademonthly averagereport only (deg C)all yearREC1
Temperature, water deg. centigradeinstantaneous maximumreport only (deg C)all yearREC1
Stream flow, instantaneousmonthly averagereport only (cfs)all yearREC1
Stream flow, instantaneousinstantaneous minimumreport only (cfs)all yearREC1
pHinstantaneous minimumreport only (SU)Mar, Jun, Sep, DecREC1
pHinstantaneous maximumreport only (SU)Mar, Jun, Sep, DecREC1
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Mar, Jun, Sep, DecREC1
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Mar, Jun, Sep, DecREC1
Phosphorus, total [as P]monthly averagereport only (mg/L)Mar, Jun, Sep, DecREC1
Phosphorus, total [as P]daily maximumreport only (mg/L)Mar, Jun, Sep, DecREC1
Hardness, total [as CaCO3]monthly averagereport only (mg/L)Mar, Jun, Sep, DecREC1
Hardness, total [as CaCO3]daily maximumreport only (mg/L)Mar, Jun, Sep, DecREC1
Copper, dissolved [as Cu]monthly averagereport only (mg/L)Mar, Jun, Sep, DecREC1
Copper, dissolved [as Cu]daily maximumreport only (mg/L)Mar, Jun, Sep, DecREC1
Temperature, water deg. centigrademonthly averagereport only (deg C)all yearREC2
pHinstantaneous minimumreport only (SU)all yearREC2
pHinstantaneous maximumreport only (SU)all yearREC2
Alkalinity, total [as CaCO3]monthly averagereport only (mg/L)all yearREC2
Carbon, dissolved organic [as C]monthly averagereport only (mg/L)all yearREC2
Calcium, dissolved [as Ca]monthly averagereport only (mg/L)all yearREC2
Magnesium, dissolved [as Mg]monthly averagereport only (mg/L)all yearREC2
Sodium, dissolved [as Na]monthly averagereport only (mg/L)all yearREC2
Potassium, dissolved [as K]monthly averagereport only (mg/L)all yearREC2
Sulfate, dissolved [as SO4]monthly averagereport only (mg/L)all yearREC2
Copper, dissolved [as Cu]monthly averagereport only (ug/L)all yearREC2
Chloride, dissolved [as Cl]monthly averagereport only (mg/L)all yearREC2

How strict are these limits?

Cited limits by parameter: Idaho'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/ID0021296 · MCP: https://passage-data.com/mcp