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Mille Lacs Band of Chippewa

Sewage treatment plant, East Lake, Minnesota. NPDES permit MN0058611 expired Jun 8, 2026; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 47 days after each period: form A quarterly (44 values), form I twice a year (8 values), form Q quarterly (10 values), form N twice a year
Last report on file
June 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 20 reports late

Limits in force (72)

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 suspended30-day average≤ 45 mg/Lall year
Solids, total suspended30-day average≤ 45 mg/Lall year
Solids, total suspended7-day average≤ 65 mg/Lall year
Solids, total suspended7-day average≤ 65 mg/Lall year
Solids, total suspended30-day average≤ 13.8 kg/dall year
Solids, total suspended30-day average≤ 13.8 kg/dall year
Solids, total suspended7-day average≤ 19.9 kg/dall year
Solids, total suspended7-day average≤ 19.9 kg/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]30-day averagereport only (mg/L)all year
Phosphorus, total [as P]30-day averagereport only (mg/L)all year
Phosphorus, total [as P]30-day averagereport only (kg/d)all year
Phosphorus, total [as P]30-day averagereport only (kg/d)all year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Sulfate, total [as SO4]monthly averagereport only (mg/L)all year
Sulfate, total [as SO4]monthly averagereport only (mg/L)all year
Rainfallmonthly totalreport only (in)all year
Rainfallmonthly totalreport only (in)all year
Flow, in conduit or thru treatment plant30-day averagereport only (MGD)all year
Flow, in conduit or thru treatment plant30-day 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 plant30-day averagereport only (MGD)all year
Flow, in conduit or thru treatment plant30-day averagereport only (MGD)all year
E. coli30-day geometric mean≤ 126 #/100mLApr–Oct
E. coli30-day geometric mean≤ 126 #/100mLApr–Oct
E. colidaily maximum≤ 419 #/100mLApr–Oct
E. colidaily maximum≤ 419 #/100mLApr–Oct
BOD, carbonaceous [5 day, 20 C]30-day average≤ 25 mg/Lall year
BOD, carbonaceous [5 day, 20 C]30-day average≤ 25 mg/Lall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 40 mg/Lall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 40 mg/Lall year
BOD, carbonaceous [5 day, 20 C]30-day average≤ 7.7 kg/dall year
BOD, carbonaceous [5 day, 20 C]30-day average≤ 7.7 kg/dall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 12.3 kg/dall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 12.3 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, carb-5 day, 20 deg C, percent removalminimum % removal≥ 85 %all year
BOD, carb-5 day, 20 deg C, percent removalminimum % removal≥ 85 %all year
Solids, suspended percent removalminimum % removal≥ 65 %all year
Solids, suspended percent removalminimum % removal≥ 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/MN0058611 · MCP: https://passage-data.com/mcp