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Otoe WWTF

Sewage treatment plant, Otoe, Nebraska. NPDES permit NE0121673 expired Mar 31, 2025; its limits still apply. Last 12 months: over a limit 5 times (last February 2026), 3 required values missing, 18 of 19 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form M quarterly (25 values), outfall INF form M quarterly (1 value), outfall INF form A yearly
Last report on file
June 2026
Oct 2024 – Sep 2025
6 values over a limit, 0 required values missing, 21 of 25 reports late

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

Period endingParameterReportedLimitOver by
February 2026BOD, 5-day, 20 deg. C, monthly average46.5 mg/L≤ 30 mg/L55%
February 2026BOD, 5-day, 20 deg. C, weekly average46.5 mg/L≤ 45 mg/L3%
February 2026Nitrogen, ammonia total [as N], daily maximum7.72 mg/L≤ 2.05 mg/L277%
February 2026Nitrogen, ammonia total [as N], monthly average6.55 mg/L≤ 1.02 mg/L542%
February 2026Solids, total suspended, monthly average87 mg/L≤ 80 mg/L9%

Limits in force (37)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year001
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (kg/d)all year001
BOD, 5-day, 20 deg. Cweekly averagereport only (kg/d)all year001
pHdaily minimum≥ 6.5 SUall year001
pHdaily maximumreport only (SU)all year001
Solids, total suspendedmonthly average≤ 80 mg/Lall year001
Solids, total suspendeddaily maximum≤ 120 mg/Lall year001
Solids, total suspendedmonthly averagereport only (kg/d)all year001
Solids, total suspendeddaily maximumreport only (kg/d)all year001
Nitrogen, total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, total [as N]daily maximumreport only (mg/L)all year001
Nitrogen, ammonia total [as N]monthly average≤ .43 mg/LMar–May001
Nitrogen, ammonia total [as N]monthly average≤ .21 mg/LJun–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 1.02 mg/LJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ .86 mg/LMar–May001
Nitrogen, ammonia total [as N]daily maximum≤ .43 mg/LJun–Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 2.05 mg/LJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ .14 kg/dMar–May001
Nitrogen, ammonia total [as N]monthly average≤ .07 kg/dJun–Oct001
Nitrogen, ammonia total [as N]monthly average≤ .34 kg/dJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ .28 kg/dMar–May001
Nitrogen, ammonia total [as N]daily maximum≤ .14 kg/dJun–Oct001
Nitrogen, ammonia total [as N]daily maximum≤ .67 kg/dJan, Feb, Nov, Dec001
Phosphorus, total [as P]monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
E. coli, MTEC-MFmonthly geometric mean≤ 126 #/100mLMay–Sep001
E. coli, MTEC-MFdaily maximum≤ 298 #/100mLMay–Sep001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Duration of dischargevaluereport only (d)all year001
BOD, 5-day, 20 deg. Cvaluereport only (mg/L)all yearINF
pHvaluereport only (SU)all yearINF
Solids, total suspendedvaluereport only (mg/L)all yearINF
Flow, in conduit or thru treatment plantvaluereport only (MGD)all yearINF

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/NE0121673 · MCP: https://passage-data.com/mcp