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Sewage treatment plant, Bassett, Nebraska. NPDES permit NE0112666, in force until Jun 30, 2031. Last 12 months: over a limit 7 times (last June 2026), 6 of 13 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| March 2026 | Nitrogen, ammonia total [as N], daily maximum | 9.45 mg/L | ≤ 6.11 mg/L | 55% |
| March 2026 | Nitrogen, ammonia total [as N], monthly average | 2.64 kg/d | ≤ 1.09 kg/d | 142% |
| March 2026 | Nitrogen, ammonia total [as N], monthly average | 9.45 mg/L | ≤ 2.06 mg/L | 359% |
| May 2026 | E. coli, MTEC-MF, maximum | > 2419.6 #/100mL | ≤ 298 #/100mL | — |
| May 2026 | E. coli, MTEC-MF, monthly geometric mean | > 2419.6 #/100mL | ≤ 126 #/100mL | — |
| June 2026 | E. coli, MTEC-MF, maximum | > 2419.6 #/100mL | ≤ 298 #/100mL | — |
| June 2026 | E. coli, MTEC-MF, monthly geometric mean | > 2419.6 #/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 |
| Oxygen, dissolved [DO] | value | report only (mg/L) | 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 | ≤ 15.9 kg/d | all year | 001 |
| Solids, total suspended | 7-day average | ≤ 23.85 kg/d | all year | 001 |
| Oil and grease, hexane extr method | value | report only (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 | ≤ 3.69 mg/L | Jan, Feb, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.06 mg/L | Mar–May | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.44 mg/L | Jun–Oct | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 10.69 mg/L | Jan, Feb, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.11 mg/L | Mar–May | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 7.66 mg/L | Jun–Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.17 kg/d | Jan, Feb, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.09 kg/d | Mar–May | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .91 kg/d | Jun–Oct | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3.4 kg/d | Jan, Feb, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3.23 kg/d | Mar–May | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2.87 kg/d | Jun–Oct | 001 |
| Nitrogen, Kjeldahl, total [as N] | value | report only (mg/L) | all year | 001 |
| Nitrite + Nitrate total [as N] | value | report only (mg/L) | all year | 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 | 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 |
| Solids, total dissolved | value | report only (mg/L) | 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 | ≤ 13.3 kg/d | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 21.2 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 |
| Selenium, sludge, total, dry weight [as Se] | value | report only (mg/kg) | all year | SLG |
| Arsenic total, dry weight, sludge | 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 |
| 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 (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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