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Upper Sioux Community

Sewage treatment plant, Granite Falls, Minnesota. NPDES permit MN0075001, in force until Dec 12, 2027. Last 12 months: over a limit 17 times (last September 2026), 1 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 21 days after each period: form A quarterly (48 values)
Renewal application due
Jun 15, 2027 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
15 values over a limit, 0 required values missing, 1 of 12 reports late

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

All 17 values over a limit
Period endingParameterReportedLimitOver by
October 2025E. coli, daily maximum2419 #/100mL≤ 235 #/100mL929%
October 2025Solids, total suspended, 30-day average10.93 mg/L≤ 10 mg/L9%
October 2025Solids, total suspended, daily maximum14.94 kg/d≤ 8.2 kg/d82%
October 2025Solids, total suspended, daily maximum79 mg/L≤ 20 mg/L295%
December 2025Solids, total suspended, daily maximum29 mg/L≤ 20 mg/L45%
January 2026Solids, total suspended, daily maximum32 mg/L≤ 20 mg/L60%
February 2026Solids, total suspended, 30-day average11.42 mg/L≤ 10 mg/L14%
February 2026Solids, total suspended, daily maximum15.71 kg/d≤ 8.2 kg/d92%
February 2026Solids, total suspended, daily maximum67 mg/L≤ 20 mg/L235%
April 2026BOD, carbonaceous [5 day, 20 C], 30-day average14.16 mg/L≤ 10 mg/L42%
April 2026BOD, carbonaceous [5 day, 20 C], daily maximum166 mg/L≤ 20 mg/L730%
April 2026BOD, carbonaceous [5 day, 20 C], daily maximum28.887 kg/d≤ 8.2 kg/d252%
August 2026Phosphorus, total [as P], daily maximum.269 kg/d≤ .2 kg/d35%
August 2026Solids, total suspended, 30-day average11.33 mg/L≤ 10 mg/L13%
August 2026Solids, total suspended, daily maximum11.137 kg/d≤ 8.2 kg/d36%
August 2026Solids, total suspended, daily maximum46 mg/L≤ 20 mg/L130%
September 2026BOD, carbonaceous [5 day, 20 C], daily maximum21.3 mg/L≤ 20 mg/L7%

Limits in force (52)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimum≥ 7 mg/Lall year
Oxygen, dissolved [DO]minimum≥ 7 mg/Lall 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≤ 10 mg/Lall year
Solids, total suspended30-day average≤ 10 mg/Lall year
Solids, total suspendeddaily maximum≤ 20 mg/Lall year
Solids, total suspendeddaily maximum≤ 20 mg/Lall year
Solids, total suspended30-day average≤ 4.1 kg/dall year
Solids, total suspended30-day average≤ 4.1 kg/dall year
Solids, total suspendeddaily maximum≤ 8.2 kg/dall year
Solids, total suspendeddaily maximum≤ 8.2 kg/dall year
Solids, total suspended30-day averagereport only (mg/L)all year
Solids, total suspended30-day averagereport only (mg/L)all year
Phosphorus, total [as P]30-day average≤ .5 mg/LJan, Feb, Mar, Apr, Oct, Nov, Dec
Phosphorus, total [as P]30-day average≤ .5 mg/LJan, Feb, Mar, Apr, Oct, Nov, Dec
Phosphorus, total [as P]daily maximumreport only (mg/L)May–Sep
Phosphorus, total [as P]daily maximumreport only (mg/L)May–Sep
Phosphorus, total [as P]30-day average≤ .2 kg/dJan, Feb, Mar, Apr, Oct, Nov, Dec
Phosphorus, total [as P]30-day average≤ .2 kg/dJan, Feb, Mar, Apr, Oct, Nov, Dec
Phosphorus, total [as P]daily maximum≤ .2 kg/dMay–Sep
Phosphorus, total [as P]daily maximum≤ .2 kg/dMay–Sep
Phosphorus, total [as P]30-day averagereport only (mg/L)all year
Phosphorus, total [as P]30-day averagereport only (mg/L)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 plantdaily maximumreport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport 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. coligeometric mean≤ 126 #/100mLApr–Oct
E. coligeometric mean≤ 126 #/100mLApr–Oct
E. colidaily maximum≤ 235 #/100mLApr–Oct
E. colidaily maximum≤ 235 #/100mLApr–Oct
BOD, carbonaceous [5 day, 20 C]30-day average≤ 10 mg/Lall year
BOD, carbonaceous [5 day, 20 C]30-day average≤ 10 mg/Lall year
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 20 mg/Lall year
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 20 mg/Lall year
BOD, carbonaceous [5 day, 20 C]30-day average≤ 4.1 kg/dall year
BOD, carbonaceous [5 day, 20 C]30-day average≤ 4.1 kg/dall year
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 8.2 kg/dall year
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 8.2 kg/dall year
BOD, carbonaceous [5 day, 20 C]30-day averagereport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]30-day averagereport only (mg/L)all year
Outfall observation,visual, y/n response30-day averagereport only (N=0;Y=1)all year
Outfall observation,visual, y/n response30-day averagereport 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/MN0075001 · MCP: https://passage-data.com/mcp