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Wykoff city of

Sewage treatment plant, Wykoff, Minnesota. NPDES permit MN0020826, in force until Jan 31, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 47 days after each period: outfall D014 form A1 monthly (23 values), outfall S015 form A1 monthly (14 values)
Renewal application due
Aug 4, 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 (37)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]monthly minimumreport only (mg/L)all yearD014
pHmonthly minimum≥ 6 SUall yearD014
pHmonthly maximum≤ 9 SUall yearD014
Solids, total suspendedmonthly average≤ 30 mg/Lall yearD014
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall yearD014
Solids, total suspendedmonthly average≤ 4.9 kg/dall yearD014
Solids, total suspendedmaximum weekly average≤ 7.3 kg/dall yearD014
Nitrogen, total [as N]monthly average≤ 10 mg/Lall yearD014
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all yearD014
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all yearD014
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all yearD014
Phosphorus, total [as P]monthly averagereport only (mg/L)all yearD014
Phosphorus, total [as P]monthly averagereport only (kg/d)all yearD014
Coliform, fecal MPN + membrane ftl 44.5 Cmonthly geometric mean≤ 200 #/100mLall yearD014
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearD014
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all yearD014
Flow, in conduit or thru treatment plantmonthly totalreport only (Mgal/mo)all yearD014
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall yearD014
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 40 mg/Lall yearD014
BOD, carbonaceous [5 day, 20 C]monthly average≤ 4.1 kg/dall yearD014
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 6.5 kg/dall yearD014
BOD, carb-5 day, 20 deg C, percent removalmonthly average minimum≥ 85 %all yearD014
Solids, suspended percent removalmonthly average minimum≥ 85 %all yearD014
Precipitation, total defined period/inmonthly totalreport only (in)all yearS015
pHmonthly minimumreport only (SU)all yearS015
pHmonthly maximumreport only (SU)all yearS015
Solids, total suspendedmonthly averagereport only (mg/L)all yearS015
Solids, total suspendedmonthly maximumreport only (mg/L)all yearS015
Nitrogen, total [as N]monthly averagereport only (mg/L)Mar, SepS015
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)Mar, SepS015
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)Mar, SepS015
Phosphorus, total [as P]monthly averagereport only (mg/L)all yearS015
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearS015
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all yearS015
Flow, in conduit or thru treatment plantmonthly totalreport only (Mgal/mo)all yearS015
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all yearS015
BOD, carbonaceous [5 day, 20 C]monthly maximumreport only (mg/L)all yearS015

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/MN0020826 · MCP: https://passage-data.com/mcp