Passage Data · Check a report · Use it from your AI

Okabena city of

Sewage treatment plant, Okabena, Minnesota. NPDES permit MN0050288, in force until Jun 30, 2030. Last 12 months: over a limit once (last May 2026), 1 required value missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 47 days after each period: outfall D001 form A1 monthly (21 values), outfall D001 form A2 monthly (1 value), outfall S002 form A1 monthly (12 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 1 required value missing, 0 of 36 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
May 2026Chloride [as Cl], daily maximum710≤ 549 mg/L29%

Limits in force (37)

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≤ 42 kg/dall yearD001
Solids, total suspendedmaximum weekly average≤ 60 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 average≤ 1 mg/Lall yearD001
Phosphorus, total [as P]monthly averagereport only (kg/d)all yearD001
Phosphorus, total [as P]year-to-date total≤ 43 kg/yrall yearD001
Chloride [as Cl]daily maximum≤ 549 mg/Lall yearD001
Coliform, fecal MPN + membrane ftl 44.5 Cmonthly geometric mean≤ 200 #/100mLApr–OctD001
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≤ 23 kg/dall yearD001
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 37 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
Chloride [as Cl]monthly averagereport only (mg/L)all yearS002
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

New limits from Aug 1, 2027

ParameterNew limitNew or tighterMedian, last 12 months× new limit
BOD, carbonaceous [5 day, 20 C], monthly average21.1 kg/dtighter——
BOD, carbonaceous [5 day, 20 C], maximum weekly average33.8 kg/dtighter——
Solids, total suspended, monthly average38 kg/dtighter——
Solids, total suspended, maximum weekly average54.9 kg/dtighter——

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

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MN0050288 · MCP: https://passage-data.com/mcp