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Sewage treatment plant, Greenwood, Nebraska. NPDES permit NE0112950, in force until Sep 30, 2027. Last 12 months: over a limit 4 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit |
|---|---|---|---|
| May 2026 | E. coli, MTEC-MF, daily maximum | > 2420 #/100mL | ≤ 298 #/100mL |
| May 2026 | E. coli, MTEC-MF, monthly geometric mean | > 2420 #/100mL | ≤ 126 #/100mL |
| June 2026 | E. coli, MTEC-MF, daily maximum | > 4839.2 #/100mL | ≤ 298 #/100mL |
| June 2026 | E. coli, MTEC-MF, monthly geometric mean | > 4839.2 #/100mL | ≤ 126 #/100mL |
| 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 | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | 7-day average | ≤ 45 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 6.13 kg/d | all year | 001 |
| Solids, total suspended | 7-day average | ≤ 9.2 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 | ≤ 30.08 mg/L | Jan, Feb, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 34.85 mg/L | Mar–May | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 21.34 mg/L | Jun–Oct | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 60.35 mg/L | Jan, Feb, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 69.91 mg/L | Mar–May | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 42.8 mg/L | Jun–Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .34 kg/d | Jan, Feb, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .66 kg/d | Mar–May | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .32 kg/d | Jun–Oct | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ .69 kg/d | Jan, Feb, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 1.32 kg/d | Mar–May | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ .65 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 |
| E. coli, MTEC-MF | monthly geometric mean | ≤ 126 #/100mL | May–Sep | 001 |
| E. coli, MTEC-MF | daily maximum | ≤ 298 #/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 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 25 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 40 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 5.11 kg/d | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 8.18 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 |
| pH | value | report only (SU) | all year | SLG |
| Arsenic, sludge tot. dry wt [as As] | value | report only (mg/kg) | all year | SLG |
| Molybdenum, sludge, total, dry weight [as Mo] | value | report only (mg/kg) | all year | SLG |
| Zinc, sludge, total, dry weight [as Zn] | value | report only (mg/kg) | all year | SLG |
| Lead, sludge, total, dry weight [as Pb] | value | report only (mg/kg) | all year | SLG |
| Nickel, sludge, total, dry weight [as Ni] | value | report only (mg/kg) | all year | SLG |
| Nitrogen, sludge, total, dry weight [as N] | value | report only (mg/kg) | all year | SLG |
| Mercury, sludge, total, dry weight [as Hg] | value | report only (mg/kg) | all year | SLG |
| Chromium, sludge, total, dry weight [as Cr] | value | report only (mg/kg) | all year | SLG |
| Copper, sludge, total, dry weight [as Cu] | value | report only (mg/kg) | all year | SLG |
| Cadmium, sludge, total, dry weight [as Cd] | value | report only (mg/kg) | all year | SLG |
| Solids, sludge, total, dry weight | value | report only (mg/kg) | all year | SLG |
| Nitrogen, ammonia, sludge, tot dry wgt | value | report only (mg/kg) | all year | SLG |
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/NE0112950 · MCP: https://passage-data.com/mcp