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Sewage treatment plant, Denton, Nebraska. NPDES permit NE0046141, in force until Sep 30, 2030. Last 12 months: over a limit 4 times (last December 2025), 6 required values missing, 7 of 20 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| December 2025 | Nitrogen, ammonia total [as N], daily maximum | 3.07 mg/L | ≤ 2.06 mg/L | 49% |
| December 2025 | Nitrogen, ammonia total [as N], daily maximum | 3.32 kg/d | ≤ 2.09 kg/d | 59% |
| December 2025 | Nitrogen, ammonia total [as N], monthly average | 2.925 mg/L | ≤ 1.03 mg/L | 184% |
| December 2025 | Nitrogen, ammonia total [as N], monthly average | 3.16 kg/d | ≤ 1.04 kg/d | 204% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 001 |
| pH | daily minimum | ≥ 6.5 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | 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 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily minimum | report only (MGD) | all year | 001 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 002 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 002 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | monthly average | report only (kg/d) | all year | 002 |
| BOD, 5-day, 20 deg. C | weekly average | report only (kg/d) | all year | 002 |
| pH | daily minimum | ≥ 6.5 SU | all year | 002 |
| pH | daily maximum | report only (SU) | all year | 002 |
| Solids, total suspended | monthly average | ≤ 80 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 120 mg/L | all year | 002 |
| Solids, total suspended | monthly average | report only (kg/d) | all year | 002 |
| Solids, total suspended | daily maximum | report only (kg/d) | all year | 002 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 002 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.03 mg/L | Jan, Feb, Nov, Dec | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .36 mg/L | Mar–May | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .19 mg/L | Jun–Oct | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2.06 mg/L | Jan, Feb, Nov, Dec | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ .71 mg/L | Mar–May | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ .38 mg/L | Jun–Oct | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.04 kg/d | Jan, Feb, Nov, Dec | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .36 kg/d | Mar–May | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .19 kg/d | Jun–Oct | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2.09 kg/d | Jan, Feb, Nov, Dec | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ .72 kg/d | Mar–May | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ .38 kg/d | Jun–Oct | 002 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 002 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 002 |
| E. coli, MTEC-MF | monthly geometric mean | ≤ 126 #/100mL | May–Sep | 002 |
| E. coli, MTEC-MF | monthly geometric mean | report only (#/100mL) | Jan, Feb, Mar, Apr, Oct, Nov, Dec | 002 |
| E. coli, MTEC-MF | daily maximum | ≤ 298 #/100mL | May–Sep | 002 |
| E. coli, MTEC-MF | daily maximum | report only (#/100mL) | Jan, Feb, Mar, Apr, Oct, Nov, Dec | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Duration of discharge | value | report only (d) | all year | 002 |
| Flow, total | value | report only (Mgal/mo) | all year | 002 |
| BOD, 5-day, 20 deg. C | value | report only (mg/L) | all year | INF |
| 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 |
Cited limits by parameter: Nebraska's rules and the federal ones.
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