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Zumbro Falls city of

Sewage treatment plant, Zumbro Falls, Minnesota. NPDES permit MN0051004, in force until Feb 29, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 47 days after each period: outfall D001 form A1 monthly (20 values), outfall S002 form A1 monthly (11 values)
Renewal application due
Sep 2, 2027 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 24 reports late

Limits in force (34)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]monthly minimumreport only (mg/L)all yearD001
pHmonthly minimum≥ 6 SUall yearD001
pHmonthly maximum≤ 9 SUall yearD001
Solids, total suspendedmonthly average≤ 45 mg/Lall yearD001
Solids, total suspendedmaximum weekly average≤ 65 mg/Lall yearD001
Solids, total suspendedmonthly average≤ 36.9 kg/dall yearD001
Solids, total suspendedmaximum weekly average≤ 53.3 kg/dall yearD001
Nitrogen, total [as N]monthly averagereport only (mg/L)all yearD001
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all yearD001
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all yearD001
Phosphorus, total [as P]monthly averagereport only (mg/L)all yearD001
Phosphorus, total [as P]monthly averagereport only (kg/d)all yearD001
Coliform, fecal MPN + membrane ftl 44.5 Cmonthly geometric mean≤ 200 #/100mLall yearD001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)Jan, Feb, Jul, AugD001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)Mar, Apr, May, Jun, Sep, Oct, Nov, DecD001
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)Jan, Feb, Jul, AugD001
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)Mar, Apr, May, Jun, Sep, Oct, Nov, DecD001
Flow, in conduit or thru treatment plantmonthly totalreport only (Mgal/mo)Jan, Feb, Jul, AugD001
Flow, in conduit or thru treatment plantmonthly totalreport only (Mgal/mo)Mar, Apr, May, Jun, Sep, Oct, Nov, DecD001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall yearD001
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 40 mg/Lall yearD001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 20.5 kg/dall yearD001
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 32.8 kg/dall yearD001
Precipitation, total defined period/inmonthly totalreport only (in)all yearS002
pHquarterly maximumreport only (SU)Mar, Jun, Sep, DecS002
Solids, total suspendedquarterly averagereport only (mg/L)Mar, Jun, Sep, DecS002
Nitrogen, total [as N]monthly averagereport only (mg/L)Mar, SepS002
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)Mar, SepS002
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)Mar, SepS002
Phosphorus, total [as P]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecS002
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearS002
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all yearS002
Flow, in conduit or thru treatment plantmonthly totalreport only (Mgal/mo)all yearS002
BOD, carbonaceous [5 day, 20 C]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecS002

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/MN0051004 · MCP: https://passage-data.com/mcp