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Cannon Falls city of

Sewage treatment plant, Cannon Falls, Minnesota. NPDES permit MN0022993, in force until Apr 30, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 47 days after each period: outfall D051 form A1 monthly (28 values), outfall D051 form A3 monthly (2 values), outfall S052 form A1 monthly (14 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 37 reports late

Limits in force (47)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]monthly minimumreport only (mg/L)all yearD051
pHmonthly minimum≥ 6 SUall yearD051
pHmonthly maximum≤ 9 SUall yearD051
Solids, total suspendedmonthly average≤ 30 mg/Lall yearD051
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall yearD051
Solids, total suspendedmonthly maximumreport only (mg/L)JulD051
Solids, total suspendedmonthly average≤ 60 kg/dall yearD051
Solids, total suspendedmaximum weekly average≤ 89 kg/dall yearD051
Nitrogen, total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecD051
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Mar, SepD051
Nitrogen, Kjeldahl, total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecD051
Nitrite + Nitrate total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecD051
Phosphorus, total [as P]monthly averagereport only (mg/L)all yearD051
Phosphorus, total [as P]12-month average≤ 1 mg/Lall yearD051
Phosphorus, total [as P]monthly averagereport only (kg/d)all yearD051
Phosphorus, total [as P]annual total≤ 1271 kg/yrall yearD051
Sulfate, total [as SO4]monthly maximumreport only (mg/L)all yearD051
Nickel, total [as Ni]quarterly averagereport only (ug/L)Mar, Jun, Sep, DecD051
Zinc, total [as Zn]quarterly averagereport only (ug/L)Mar, Jun, Sep, DecD051
Hardness, Ca Mg Calculated [mg/L as CaCO3]quarterly maximumreport only (mg/L)Mar, Jun, Sep, DecD051
Coliform, fecal MPN + membrane ftl 44.5 Cmonthly geometric mean≤ 200 #/100mLApr–OctD051
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearD051
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all yearD051
Flow, in conduit or thru treatment plantmonthly totalreport only (Mgal/mo)all yearD051
Solids, total dissolvedmonthly averagereport only (mg/L)Apr, SepD051
Mercury, dissolved [as Hg]monthly maximumreport only (ng/L)JulD051
Mercury, total [as Hg]monthly maximumreport only (ng/L)JulD051
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall yearD051
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 40 mg/Lall yearD051
BOD, carbonaceous [5 day, 20 C]monthly average≤ 50 kg/dall yearD051
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 79 kg/dall yearD051
BOD, carb-5 day, 20 deg C, percent removalmonthly average minimum≥ 85 %all yearD051
Solids, suspended percent removalmonthly average minimum≥ 85 %all yearD051
Precipitation, total defined period/inmonthly totalreport only (in)all yearS052
pHmonthly minimumreport only (SU)all yearS052
pHmonthly maximumreport only (SU)all yearS052
Solids, total suspendedmonthly averagereport only (mg/L)all yearS052
Solids, total suspendedmonthly maximumreport only (mg/L)all yearS052
Nitrogen, total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecS052
Nitrogen, Kjeldahl, total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecS052
Nitrite + Nitrate total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecS052
Phosphorus, total [as P]monthly averagereport only (mg/L)all yearS052
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearS052
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all yearS052
Flow, in conduit or thru treatment plantmonthly totalreport only (Mgal/mo)all yearS052
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all yearS052
BOD, carbonaceous [5 day, 20 C]monthly maximumreport only (mg/L)all yearS052

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/MN0022993 · MCP: https://passage-data.com/mcp