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City of Omaha Combined Sewer Overflows

Sewerage Systems, Omaha, Nebraska. NPDES permit NE0133680, in force until Dec 31, 2028. Last 12 months: over a limit once (last May 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 102 form 01 quarterly (1 value), outfall 102 form 02 quarterly (1 value), outfall 102 form 03 quarterly (1 value), outfall 102 form 04 quarterly (1 value), outfall 102 form 05 quarterly (1 value), outfall 102 form 06 quarterly (1 value), and 26 more forms
Last report on file
June 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 111 reports late

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

Period endingParameterReportedLimitOver by
May 2026Chlorine, total residual, monthly average.0125 mg/L≤ .011 mg/L14%

Limits in force (51)

ParameterStatisticLimitMonthsOutfall
BOD, 5-day, 20 deg. Cvaluereport only (mg/L)all year102
pHminimum≥ 6.5 SUall year102
pHmaximum≤ 9 SUall year102
Solids, total suspendedvaluereport only (mg/L)all year102
E. coli, MTEC-MFmonthly geometric mean≤ 1096 #/100mLMay–Sep102
E. coli, MTEC-MFmonthly geometric mean≤ 565 #/100mLMay–Sep102
E. coli, MTEC-MFmonthly geometric mean≤ 421 #/100mLMay–Sep102
E. coli, MTEC-MFmonthly geometric mean≤ 354 #/100mLMay–Sep102
E. coli, MTEC-MFmonthly geometric mean≤ 314 #/100mLMay–Sep102
E. coli, MTEC-MFmonthly geometric mean≤ 287 #/100mLMay–Sep102
E. coli, MTEC-MFmonthly geometric mean≤ 242 #/100mLMay–Sep102
E. coli, MTEC-MFmonthly geometric mean≤ 219 #/100mLMay–Sep102
E. coli, MTEC-MFmonthly geometric mean≤ 205 #/100mLMay–Sep102
E. coli, MTEC-MFmonthly geometric mean≤ 194 #/100mLMay–Sep102
E. coli, MTEC-MFmonthly geometric mean≤ 162 #/100mLMay–Sep102
E. coli, MTEC-MFmonthly geometric mean≤ 145 #/100mLMay–Sep102
E. coli, MTEC-MFmonthly geometric mean≤ 126 #/100mLall year102
E. coli, MTEC-MFgeometric meanreport only (#/100mL)May–Sep102
Flow, in conduit or thru treatment plantvaluereport only (MGD)all year102
Chlorine, total residualvaluereport only (mg/L)all year102
Number of Eventsvaluereport only (#)all year102
Are You In Compliancevaluereport only (Y=0;N=1)all year102
Are You In Compliancevaluereport only (Y=0;N=1)all year102
Duration of dischargevaluereport only (hr)all year102
Flow, totalvaluereport only (Mgal/mo)all year102
BOD, 5-day, 20 deg. Cvaluereport only (mg/L)all year205R
pHminimum≥ 6.5 SUall year205R
pHmaximum≤ 9 SUall year205R
Solids, total suspendedvaluereport only (mg/L)all year205R
E. coli, MTEC-MFmonthly geometric mean≤ 1096 #/100mLMay, Jun, Jul, Aug, Sep, Dec205R
E. coli, MTEC-MFmonthly geometric mean≤ 565 #/100mLMay–Sep205R
E. coli, MTEC-MFmonthly geometric mean≤ 421 #/100mLMay–Sep205R
E. coli, MTEC-MFmonthly geometric mean≤ 354 #/100mLMay–Sep205R
E. coli, MTEC-MFmonthly geometric mean≤ 314 #/100mLMay–Sep205R
E. coli, MTEC-MFmonthly geometric mean≤ 287 #/100mLMay–Sep205R
E. coli, MTEC-MFmonthly geometric mean≤ 242 #/100mLMay–Sep205R
E. coli, MTEC-MFmonthly geometric mean≤ 219 #/100mLMay–Sep205R
E. coli, MTEC-MFmonthly geometric mean≤ 205 #/100mLMay–Sep205R
E. coli, MTEC-MFmonthly geometric mean≤ 194 #/100mLMay–Sep205R
E. coli, MTEC-MFmonthly geometric mean≤ 162 #/100mLMay–Sep205R
E. coli, MTEC-MFmonthly geometric mean≤ 145 #/100mLMay–Sep205R
E. coli, MTEC-MFmonthly geometric mean≤ 126 #/100mLMay–Sep205R
E. coli, MTEC-MFmonthly geometric meanreport only (#/100mL)May–Sep205R
Flow, in conduit or thru treatment plantvaluereport only (MGD)all year205R
Chlorine, total residualmonthly average≤ .011 mg/Lall year205R
Chlorine, total residualdaily maximum≤ .019 mg/Lall year205R
Number of Eventsvaluereport only (#)all year205R
Are You In Compliancevaluereport only (Y=0;N=1)all year205R
Are You In Compliancevaluereport only (Y=0;N=1)all year205R
Duration of dischargevaluereport only (hr)all year205R
Flow, totalvaluereport only (Mgal/mo)all year205R

How strict are these limits?

Cited limits by parameter: Nebraska'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/NE0133680 · MCP: https://passage-data.com/mcp