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Wabasha city of

Sewage treatment plant, Wabasha, Minnesota. NPDES permit MN0025143 expired Aug 31, 2025; 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: outfall D010 form A1 monthly (25 values), outfall S011 form A1 monthly (15 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 25 reports late

Limits in force (43)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]monthly minimumreport only (mg/L)all yearD010
pHmonthly minimum≥ 6 SUall yearD010
pHmonthly maximum≤ 9 SUall yearD010
Solids, total suspendedmonthly average≤ 30 mg/Lall yearD010
Solids, total suspendedmonthly maximumreport only (mg/L)JulD010
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall yearD010
Solids, total suspendedmonthly average≤ 69 kg/dall yearD010
Solids, total suspendedmaximum weekly average≤ 103 kg/dall yearD010
Nitrogen, total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecD010
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Mar, SepD010
Nitrogen, Kjeldahl, total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecD010
Nitrite + Nitrate total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecD010
Phosphorus, total [as P]monthly average≤ 1 mg/Lall yearD010
Phosphorus, total [as P]monthly average≤ 2.3 kg/dall yearD010
Sulfate, total [as SO4]monthly maximumreport only (mg/L)Apr, SepD010
Coliform, fecal MPN + membrane ftl 44.5 Cmonthly geometric mean≤ 200 #/100mLApr–OctD010
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearD010
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all yearD010
Flow, in conduit or thru treatment plantmonthly totalreport only (Mgal/mo)all yearD010
Solids, total dissolvedmonthly averagereport only (mg/L)Mar, SepD010
Mercury, dissolved [as Hg]monthly maximumreport only (ng/L)JulD010
Mercury, total [as Hg]monthly maximumreport only (ng/L)JulD010
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall yearD010
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 40 mg/Lall yearD010
BOD, carbonaceous [5 day, 20 C]monthly average≤ 57 kg/dall yearD010
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 91 kg/dall yearD010
BOD, carb-5 day, 20 deg C, percent removalmonthly average minimum≥ 85 %all yearD010
Solids, suspended percent removalmonthly average minimum≥ 85 %all yearD010
Precipitation, total defined period/inmonthly totalreport only (in)all yearS011
pHmonthly minimumreport only (SU)all yearS011
pHmonthly maximumreport only (SU)all yearS011
Solids, total suspendedmonthly averagereport only (mg/L)all yearS011
Solids, total suspendedmonthly maximumreport only (mg/L)all yearS011
Nitrogen, total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecS011
Nitrogen, Kjeldahl, total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecS011
Nitrite + Nitrate total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecS011
Phosphorus, total [as P]monthly averagereport only (mg/L)all yearS011
Phosphorus, total [as P]monthly averagereport only (kg/d)all yearS011
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearS011
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all yearS011
Flow, in conduit or thru treatment plantmonthly totalreport only (Mgal/mo)all yearS011
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all yearS011
BOD, carbonaceous [5 day, 20 C]monthly maximumreport only (mg/L)all yearS011

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/MN0025143 · MCP: https://passage-data.com/mcp