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Bois Forte Tribal Council

Sewage treatment plant, Tower, Minnesota. NPDES permit MN0061310, in force until Jan 27, 2030. Last 12 months: over a limit 3 times (last May 2026), 3 of 13 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 51 days after each period: form Q quarterly (24 values), form A quarterly
Last report on file
September 2026
Oct 2024 – Sep 2025
1 value over a limit, 8 required values missing, 4 of 16 reports late

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

Period endingParameterReportedLimitOver by
May 2026BOD, carb-5 day, 20 deg C, percent removal, minimum80 %≥ 85 %33%
May 2026Solids, suspended percent removal, minimum26 %≥ 65 %111%
May 2026pH, maximum9.7 SU≤ 9 SU—

Limits in force (82)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimumreport only (mg/L)all year
Oxygen, dissolved [DO]minimumreport only (mg/L)all year
pHminimum≥ 6 SUall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
pHmaximum≤ 9 SUall year
pHminimumreport only (SU)all year
pHminimumreport only (SU)all year
pHmaximumreport only (SU)all year
pHmaximumreport only (SU)all year
Solids, total suspendedmonthly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 45 mg/Lall year
Solids, total suspendedweekly average≤ 60 mg/Lall year
Solids, total suspendedweekly average≤ 60 mg/Lall year
Solids, total suspendedmonthly average≤ 142 kg/dall year
Solids, total suspendedmonthly average≤ 142 kg/dall year
Solids, total suspendedweekly average≤ 189 kg/dall year
Solids, total suspendedweekly average≤ 189 kg/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedmonthly averagereport only (kg/d)all year
Solids, total suspendedmonthly averagereport only (kg/d)all year
Nitrogen, total [as N]monthly averagereport only (mg/L)Jun, Dec
Nitrogen, total [as N]monthly averagereport only (mg/L)Jun, Dec
Nitrogen, total [as N]monthly averagereport only (mg/L)Mar, Sep
Nitrogen, total [as N]monthly averagereport only (mg/L)Mar, Sep
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Jun, Dec
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Jun, Dec
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Mar, Sep
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Mar, Sep
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)Jun, Dec
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)Jun, Dec
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)Mar, Sep
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)Mar, Sep
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)Jun, Dec
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)Jun, Dec
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)Mar, Sep
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)Mar, Sep
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]monthly average≤ 3.1 kg/dall year
Phosphorus, total [as P]monthly average≤ 3.1 kg/dall year
Phosphorus, total [as P]weekly average≤ 6.3 kg/dall year
Phosphorus, total [as P]weekly average≤ 6.3 kg/dall year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (kg/d)all year
Phosphorus, total [as P]monthly averagereport only (kg/d)all year
Sulfate, total [as SO4]monthly averagereport only (mg/L)Jun, Dec
Sulfate, total [as SO4]monthly averagereport only (mg/L)Jun, Dec
Rainfallmonthly totalreport only (in)all year
Rainfallmonthly totalreport only (in)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 plantweekly 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
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
E. coligeometric mean≤ 126 #/100mLApr–Oct
E. coligeometric mean≤ 126 #/100mLApr–Oct
E. colimaximum≤ 410 #/100mLApr–Oct
E. colimaximum≤ 410 #/100mLApr–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 40 mg/Lall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 40 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 79 kg/dall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 79 kg/dall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 126 kg/dall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 126 kg/dall year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (kg/d)all year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (kg/d)all year
BOD, carb-5 day, 20 deg C, percent removalminimum≥ 85 %all year
BOD, carb-5 day, 20 deg C, percent removalminimum≥ 85 %all year
Solids, suspended percent removalminimum≥ 65 %all year
Solids, suspended percent removalminimum≥ 65 %all year
Outfall observation,visual, y/n responsevaluereport only (N=0;Y=1)all year
Outfall observation,visual, y/n responsevaluereport only (N=0;Y=1)all year

How strict are these limits?

Cited limits by parameter: Minnesota'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/MN0061310 · MCP: https://passage-data.com/mcp