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Saint Francis city of

Sewage treatment plant, Saint Francis, Minnesota. NPDES permit MN0021407 expired Jun 30, 2026; its limits still apply. Last 12 months: no values over a limit, 1 required value missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 47 days after each period: outfall D025 form A1 monthly (40 values), outfall D025 form A2 monthly (2 values), outfall D025 form A3 monthly (1 value), outfall S006 form A1 monthly (16 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 38 reports late

Limits in force (65)

ParameterStatisticLimitMonthsOutfall
Specific conductancemonthly maximumreport only (umho/cm)all yearD025
Oxygen, dissolved [DO]monthly minimum≥ 6 mg/Lall yearD025
pHmonthly minimum≥ 6 SUall yearD025
pHmonthly maximum≤ 9 SUall yearD025
Bicarbonate ion- [as HCO3]monthly maximumreport only (mg/L)all yearD025
Solids, total suspendedmonthly average≤ 15 mg/Lall yearD025
Solids, total suspendedmonthly averagereport only (mg/L)May, SepD025
Solids, total suspendedmaximum weekly average≤ 22 mg/Lall yearD025
Solids, total suspendeddaily maximumreport only (mg/L)May, SepD025
Solids, total suspendedmonthly average≤ 46.31 kg/dall yearD025
Solids, total suspendedmaximum weekly average≤ 67.93 kg/dall yearD025
Nitrogen, total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecD025
Nitrogen, ammonia total [as N]monthly average≤ 8.2 mg/LApr, MayD025
Nitrogen, ammonia total [as N]monthly average≤ 1.4 mg/LJun–SepD025
Nitrogen, ammonia total [as N]monthly average≤ 5.5 mg/LOct, NovD025
Nitrogen, ammonia total [as N]monthly average≤ 5 mg/LJan, Feb, Mar, DecD025
Nitrogen, ammonia total [as N]monthly average≤ 25.32 kg/dApr, MayD025
Nitrogen, ammonia total [as N]monthly average≤ 4.32 kg/dJun–SepD025
Nitrogen, ammonia total [as N]monthly average≤ 16.98 kg/dOct, NovD025
Nitrogen, ammonia total [as N]monthly average≤ 15.44 kg/dJan, Feb, Mar, DecD025
Nitrogen, Kjeldahl, total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecD025
Nitrite + Nitrate total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecD025
Phosphorus, total [as P]monthly average≤ 1 mg/Lall yearD025
Phosphorus, total [as P]annual total≤ 746 kg/yrall yearD025
Calcium, total [as Ca]monthly maximumreport only (mg/L)all yearD025
Magnesium, total [as Mg]monthly maximumreport only (mg/L)all yearD025
Sodium, total [as Na]monthly maximumreport only (mg/L)all yearD025
Potassium, total [as K]monthly maximumreport only (mg/L)all yearD025
Chloride [as Cl]monthly average≤ 354 mg/LJan, Mar, May, Jul, Sep, NovD025
Chloride [as Cl]daily maximum≤ 427 mg/LJan, Mar, May, Jul, Sep, NovD025
Sulfate, total [as SO4]monthly maximumreport only (mg/L)all yearD025
Hardness, Ca Mg Calculated [mg/L as CaCO3]monthly maximumreport only (mg/L)all yearD025
Coliform, fecal MPN + membrane ftl 44.5 Cmonthly geometric mean≤ 200 #/100mLApr–OctD025
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearD025
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all yearD025
Flow, in conduit or thru treatment plantmonthly totalreport only (Mgal/mo)all yearD025
Chlorine, total residualdaily maximum≤ .038 mg/Lall yearD025
Solids, total dissolvedmonthly maximumreport only (mg/L)all yearD025
Mercury, dissolved [as Hg]monthly averagereport only (ng/L)May, SepD025
Mercury, dissolved [as Hg]daily maximumreport only (ng/L)May, SepD025
Mercury, total [as Hg]monthly average≤ 3.4 ng/LMay, SepD025
Mercury, total [as Hg]daily maximum≤ 6.5 ng/LMay, SepD025
Mercury, total [as Hg]monthly average≤ 10.5 mg/dMay, SepD025
BOD, carbonaceous [5 day, 20 C]monthly average≤ 15 mg/Lall yearD025
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 22 mg/Lall yearD025
BOD, carbonaceous [5 day, 20 C]monthly average≤ 46.31 kg/dall yearD025
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 67.93 kg/dall yearD025
BOD, carb-5 day, 20 deg C, percent removalmonthly average minimum≥ 85 %all yearD025
Solids, suspended percent removalmonthly average minimum≥ 85 %all yearD025
Precipitation, total defined period/inmonthly totalreport only (in)all yearS006
pHmonthly minimumreport only (SU)all yearS006
pHmonthly maximumreport only (SU)all yearS006
Solids, total suspendedmonthly averagereport only (mg/L)all yearS006
Solids, total suspendedmonthly maximumreport only (mg/L)all yearS006
Nitrogen, total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecS006
Nitrogen, Kjeldahl, total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecS006
Nitrite + Nitrate total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecS006
Phosphorus, total [as P]monthly averagereport only (mg/L)all yearS006
Chloride [as Cl]monthly maximumreport only (mg/L)Jan, Mar, May, Jul, Sep, NovS006
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearS006
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all yearS006
Flow, in conduit or thru treatment plantmonthly totalreport only (Mgal/mo)all yearS006
Mercury, total [as Hg]monthly averagereport only (ng/L)May, SepS006
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all yearS006
BOD, carbonaceous [5 day, 20 C]monthly maximumreport only (mg/L)all yearS006

How strict are these limits?

Cited limits by parameter: Minnesota's rules and the federal ones.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MN0021407 · MCP: https://passage-data.com/mcp