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Sewage treatment plant, major discharger, Omaha, Nebraska. NPDES permit NE0112810, in force until Dec 31, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 001 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 001 |
| pH | daily minimum | ≥ 6.5 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 45 mg/L | all year | 001 |
| Solids, total suspended | 7-day average | ≤ 65 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 16777 kg/d | all year | 001 |
| Solids, total suspended | 7-day average | ≤ 27063 kg/d | all year | 001 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | 001 |
| Oil and grease, hexane extr method | daily maximum | ≤ 10 mg/L | all year | 001 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 64.7 mg/L | Jan, Feb, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 40.5 mg/L | Mar–May | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 34.1 mg/L | Jun–Oct | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 99.1 mg/L | Jan, Feb, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 61.1 mg/L | Mar–May | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 55.5 mg/L | Jun–Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 24122 kg/d | Jan, Feb, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 15099 kg/d | Mar–May | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 12713 kg/d | Jun–Oct | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 41260 kg/d | Jan, Feb, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 25439 kg/d | Mar–May | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 23107 kg/d | Jun–Oct | 001 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 001 |
| Sulfate, total [as SO4] | monthly average | report only (mg/L) | all year | 001 |
| Sulfate, total [as SO4] | daily maximum | report only (mg/L) | all year | 001 |
| Arsenic, total [as As] | monthly average | report only (mg/L) | all year | 001 |
| Arsenic, total [as As] | daily maximum | report only (mg/L) | all year | 001 |
| Cadmium, dissolved [as Cd] | monthly average | report only (mg/L) | all year | 001 |
| Cadmium, dissolved [as Cd] | daily maximum | report only (mg/L) | all year | 001 |
| Chromium, dissolved [as Cr] | monthly average | report only (mg/L) | all year | 001 |
| Chromium, dissolved [as Cr] | daily maximum | report only (mg/L) | all year | 001 |
| Copper, dissolved [as Cu] | monthly average | report only (mg/L) | all year | 001 |
| Copper, dissolved [as Cu] | daily maximum | report only (mg/L) | all year | 001 |
| Lead, dissolved [as Pb] | monthly average | report only (mg/L) | all year | 001 |
| Lead, dissolved [as Pb] | daily maximum | report only (mg/L) | all year | 001 |
| Nickel, dissolved [as Ni] | monthly average | report only (mg/L) | all year | 001 |
| Nickel, dissolved [as Ni] | daily maximum | report only (mg/L) | all year | 001 |
| Zinc, dissolved [as Zn] | monthly average | report only (mg/L) | all year | 001 |
| Zinc, dissolved [as Zn] | daily maximum | report only (mg/L) | all year | 001 |
| E. coli, MTEC-MF | monthly geometric mean | ≤ 126 #/100mL | May–Sep | 001 |
| E. coli, MTEC-MF | maximum | report only (#/100mL) | May–Sep | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Chlorine, total residual | monthly average | ≤ .08 mg/L | Mar–May | 001 |
| Chlorine, total residual | monthly average | ≤ .09 mg/L | Jun–Oct | 001 |
| Chlorine, total residual | monthly average | ≤ .07 mg/L | Jan, Feb, Nov, Dec | 001 |
| Chlorine, total residual | daily maximum | ≤ .2 mg/L | Mar–May | 001 |
| Chlorine, total residual | daily maximum | ≤ .23 mg/L | Jun–Oct | 001 |
| Chlorine, total residual | daily maximum | ≤ .19 mg/L | Jan, Feb, Nov, Dec | 001 |
| Toxicity [acute], Ceriodaphnia dubia | daily maximum | ≤ 3.01 tox acute | Jan, Feb, Nov, Dec | 001 |
| Toxicity [acute], Ceriodaphnia dubia | daily maximum | ≤ 3.12 tox acute | Mar–May | 001 |
| Toxicity [acute], Ceriodaphnia dubia | daily maximum | ≤ 3.69 tox acute | Jun–Oct | 001 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | daily maximum | ≤ 3.12 tox acute | Mar–May | 001 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | daily maximum | ≤ 3.69 tox acute | Jun–Oct | 001 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | daily maximum | ≤ 3.01 tox acute | Jan, Feb, Nov, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 40 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 60 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 14913 kg/d | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 24981 kg/d | all year | 001 |
| pH | value | report only (SU) | all year | INF |
| Solids, total suspended | value | report only (mg/L) | all year | INF |
| Flow, in conduit or thru treatment plant | value | report only (MGD) | all year | INF |
| BOD, carbonaceous [5 day, 20 C] | value | report only (mg/L) | all year | INF |
| Parameter | New limit | New or tighter | Median, last 12 months | × new limit |
|---|---|---|---|---|
| Nitrogen, ammonia total [as N], daily maximum | 38.1 mg/L (Mar–May) | tighter | 39.4 mg/L (3 values) | 1.03× |
| Nitrogen, ammonia total [as N], daily maximum | 16.55 mg/L (Jun–Oct) | tighter | 37.4 mg/L (5 values) | 2.26× |
| Nitrogen, ammonia total [as N], daily maximum | 6891 kg/d (Jun–Oct) | tighter | 8255 kg/d (5 values) | 1.2× |
| Nitrogen, ammonia total [as N], monthly average | 28.7 mg/L (Mar–May) | tighter | 30.1 mg/L (3 values) | 1.05× |
| Nitrogen, ammonia total [as N], monthly average | 13.06 mg/L (Jun–Oct) | tighter | 28.3 mg/L (5 values) | 2.17× |
| Nitrogen, ammonia total [as N], monthly average | 4869 kg/d (Jun–Oct) | tighter | 6118 kg/d (5 values) | 1.26× |
| BOD, carbonaceous [5 day, 20 C], 7-day average | 40 mg/L | tighter | 10.5 mg/L (12 values) | 0.263× |
| BOD, carbonaceous [5 day, 20 C], 7-day average | 16654 kg/d | tighter | 2116 kg/d (12 values) | 0.127× |
| BOD, carbonaceous [5 day, 20 C], monthly average | 9321 kg/d | tighter | 1823 kg/d (12 values) | 0.196× |
| BOD, carbonaceous [5 day, 20 C], monthly average | 25 mg/L | tighter | 8.7 mg/L (12 values) | 0.348× |
| Chlorine, total residual, daily maximum | 0.092 mg/L (Jun–Oct) | tighter | 0.045 mg/L (4 values) | 0.489× |
| Chlorine, total residual, daily maximum | 0.088 mg/L (Mar–May) | tighter | — | — |
| Chlorine, total residual, daily maximum | 0.094 mg/L (Jan, Feb, Nov, Dec) | tighter | — | — |
| Chlorine, total residual, monthly average | 0.048 mg/L (Jan, Feb, Nov, Dec) | tighter | — | — |
| Chlorine, total residual, monthly average | 0.045 mg/L (Mar–May) | tighter | — | — |
| Chlorine, total residual, monthly average | 0.047 mg/L (Jun–Oct) | tighter | 0.02 mg/L (4 values) | 0.426× |
| Nitrogen, ammonia total [as N], daily maximum | 18253 kg/d (Jan, Feb, Nov, Dec) | tighter | 7629 kg/d (4 values) | 0.418× |
| Nitrogen, ammonia total [as N], daily maximum | 43.84 mg/L (Jan, Feb, Nov, Dec) | tighter | 38.6 mg/L (4 values) | 0.88× |
| Nitrogen, ammonia total [as N], daily maximum | 15863 kg/d (Mar–May) | tighter | 9480 kg/d (3 values) | 0.598× |
| Nitrogen, ammonia total [as N], monthly average | 36.07 mg/L (Jan, Feb, Nov, Dec) | tighter | 32.95 mg/L (4 values) | 0.914× |
| Nitrogen, ammonia total [as N], monthly average | 13448 kg/d (Jan, Feb, Nov, Dec) | tighter | 6442 kg/d (4 values) | 0.479× |
| Nitrogen, ammonia total [as N], monthly average | 10700 kg/d (Mar–May) | tighter | 6208 kg/d (3 values) | 0.58× |
| Solids, total suspended, 7-day average | 45 mg/L | tighter | 11 mg/L (12 values) | 0.244× |
| Solids, total suspended, 7-day average | 18736 kg/d | tighter | 2136 kg/d (12 values) | 0.114× |
| Solids, total suspended, monthly average | 11185 kg/d | tighter | 1798 kg/d (12 values) | 0.161× |
| Solids, total suspended, monthly average | 30 mg/L | tighter | 8.85 mg/L (12 values) | 0.295× |
| Toxicity [acute], Ceriodaphnia dubia, maximum | 2.86 tox acute (Jun–Oct) | tighter | — | — |
| Toxicity [acute], Ceriodaphnia dubia, maximum | 2.57 tox acute (Jan, Feb, Nov, Dec) | tighter | — | — |
| Toxicity [acute], Ceriodaphnia dubia, maximum | 2.14 tox acute (Mar–May) | tighter | — | — |
| Toxicity [acute], Pimephales promelas [Fathead Minnow], maximum | 2.86 tox acute (Jun–Oct) | tighter | — | — |
| Toxicity [acute], Pimephales promelas [Fathead Minnow], maximum | 2.57 tox acute (Jan, Feb, Nov, Dec) | tighter | — | — |
| Toxicity [acute], Pimephales promelas [Fathead Minnow], maximum | 2.14 tox acute (Mar–May) | tighter | — | — |
Cited limits by parameter: Nebraska's rules and the federal ones.
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Your permit document is the final word. As JSON: /api/v1/permits/NE0112810 · MCP: https://passage-data.com/mcp