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Arapahoe WWTF

Sewage treatment plant, Arapahoe, Nebraska. NPDES permit NE0021521, in force until Mar 31, 2031. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form M quarterly (26 values), outfall 001 form R yearly, outfall INF form A yearly
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 13 reports late

Limits in force (45)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year001
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year001
Oxygen, dissolved [DO]valuereport only (mg/L)all year001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. C7-day average≤ 45 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (kg/d)all year001
BOD, 5-day, 20 deg. C7-day 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
Oil and grease, hexane extr methodvaluereport only (mg/L)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≤ 1.41 mg/LJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ .2 mg/LMar–May001
Nitrogen, ammonia total [as N]monthly average≤ .31 mg/LJun–Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 2.82 mg/LJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ .41 mg/LMar–May001
Nitrogen, ammonia total [as N]daily maximum≤ .62 mg/LJun–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 1.24 kg/dJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ .18 kg/dMar–May001
Nitrogen, ammonia total [as N]monthly average≤ .28 kg/dJun–Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 2.56 kg/dJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ .37 kg/dMar–May001
Nitrogen, ammonia total [as N]daily maximum≤ .56 kg/dJun–Oct001
Nitrogen, Kjeldahl, total [as N]valuereport only (mg/L)all year001
Nitrite + Nitrate total [as N]valuereport only (mg/L)all year001
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-MFgeometric mean≤ 126 #/100mLMay–Sep001
E. coli, MTEC-MFmonthly geometric meanreport only (#/100mL)Jan, Feb, Mar, Apr, Oct, Nov, Dec001
E. coli, MTEC-MFdaily maximum≤ 298 #/100mLMay–Sep001
E. coli, MTEC-MFdaily maximumreport only (#/100mL)Jan, Feb, Mar, Apr, Oct, Nov, Dec001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Solids, total dissolvedvaluereport only (mg/L)all year001
Duration of dischargevaluereport only (d)all year001
Flow, totalvaluereport only (Mgal/mo)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/NE0021521 · MCP: https://passage-data.com/mcp