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Sewage treatment plant, Schuyler, Nebraska. NPDES permit NE0042358, in force until Jun 30, 2030. 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 |
| Oxygen, dissolved [DO] | value | report only (mg/L) | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | report only (kg/d) | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | report only (kg/d) | all year | 001 |
| pH | daily minimum | ≥ 6.5 SU | all year | 001 |
| pH | daily maximum | report only (SU) | all year | 001 |
| Solids, total suspended | monthly average | ≤ 80 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 120 mg/L | all year | 001 |
| Solids, total suspended | monthly average | report only (kg/d) | all year | 001 |
| Solids, total suspended | daily maximum | report only (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 | ≤ .81 mg/L | Jan, Feb, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .45 mg/L | Mar–May | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .23 mg/L | Jun–Oct | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 1.63 mg/L | Jan, Feb, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ .91 mg/L | Mar–May | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ .41 mg/L | Jun–Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 6.78 kg/d | Jan, Feb, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3.79 kg/d | Mar–May | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.03 kg/d | Jun–Oct | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 13.6 kg/d | Jan, Feb, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 7.61 kg/d | Mar–May | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 1.84 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 | monthly geometric mean | report only (#/100mL) | Jan, Feb, Mar, Apr, Oct, Nov, Dec | 001 |
| E. coli, MTEC-MF | daily maximum | ≤ 298 #/100mL | May–Sep | 001 |
| E. coli, MTEC-MF | daily maximum | report only (#/100mL) | Jan, Feb, Mar, Apr, Oct, Nov, Dec | 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 |
| Duration of discharge | value | report only (d) | all year | 001 |
| Flow, total | value | report only (Mgal/mo) | 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 |
| Oxygen, dissolved [DO] | value | report only (mg/L) | 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 |
| Oil and grease, hexane extr method | value | report only (mg/L) | 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 | ≤ .87 mg/L | Jan, Feb, Nov, Dec | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .48 mg/L | Mar–May | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .23 mg/L | Jun–Oct | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 1.75 mg/L | Jan, Feb, Nov, Dec | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ .96 mg/L | Mar–May | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ .41 mg/L | Jun–Oct | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 4.21 kg/d | Jan, Feb, Nov, Dec | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.32 kg/d | Mar–May | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.03 kg/d | Jun–Oct | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 8.44 kg/d | Jan, Feb, Nov, Dec | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4.66 kg/d | Mar–May | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 1.84 kg/d | Jun–Oct | 002 |
| Nitrogen, Kjeldahl, total [as N] | value | report only (mg/L) | all year | 002 |
| Nitrite + Nitrate total [as N] | value | report only (mg/L) | all year | 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 |
| Solids, total dissolved | value | report only (mg/L) | all year | 002 |
| Duration of discharge | value | report only (d) | all year | 002 |
| Flow, total | value | report only (Mgal/mo) | all year | 002 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 004 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 004 |
| Oxygen, dissolved [DO] | value | report only (mg/L) | all year | 004 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year | 004 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year | 004 |
| BOD, 5-day, 20 deg. C | monthly average | report only (kg/d) | all year | 004 |
| BOD, 5-day, 20 deg. C | weekly average | report only (kg/d) | all year | 004 |
| pH | daily minimum | ≥ 6.5 SU | all year | 004 |
| pH | daily maximum | report only (SU) | all year | 004 |
| Solids, total suspended | monthly average | ≤ 80 mg/L | all year | 004 |
| Solids, total suspended | daily maximum | ≤ 120 mg/L | all year | 004 |
| Solids, total suspended | monthly average | report only (kg/d) | all year | 004 |
| Solids, total suspended | daily maximum | report only (kg/d) | all year | 004 |
| Oil and grease, hexane extr method | value | report only (mg/L) | all year | 004 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 004 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 004 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.07 mg/L | Mar–May | 004 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.27 mg/L | Jun–Oct | 004 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 7.58 mg/L | Jan, Feb, Nov, Dec | 004 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4.16 mg/L | Mar–May | 004 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2.55 mg/L | Jun–Oct | 004 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 15.2 mg/L | Jan, Feb, Nov, Dec | 004 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 9.28 kg/d | Mar–May | 004 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 5.69 kg/d | Jun–Oct | 004 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 33.92 kg/d | Jan, Feb, Nov, Dec | 004 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 18.62 kg/d | Mar–May | 004 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 11.42 kg/d | Jun–Oct | 004 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 68.05 kg/d | Jan, Feb, Nov, Dec | 004 |
| Nitrogen, Kjeldahl, total [as N] | value | report only (mg/L) | all year | 004 |
| Nitrite + Nitrate total [as N] | value | report only (mg/L) | all year | 004 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 004 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 004 |
| E. coli, MTEC-MF | monthly geometric mean | ≤ 126 #/100mL | May–Sep | 004 |
| E. coli, MTEC-MF | monthly geometric mean | report only (#/100mL) | Jan, Feb, Mar, Apr, Oct, Nov, Dec | 004 |
| E. coli, MTEC-MF | daily maximum | ≤ 298 #/100mL | May–Sep | 004 |
| E. coli, MTEC-MF | daily maximum | report only (#/100mL) | Jan, Feb, Mar, Apr, Oct, Nov, Dec | 004 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 004 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 004 |
| Solids, total dissolved | value | report only (mg/L) | all year | 004 |
| Duration of discharge | value | report only (d) | all year | 004 |
| Flow, total | value | report only (Mgal/mo) | all year | 004 |
| 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 |
| Conductivity | value | report only (umho/cm) | all year | MW5 |
| pH | value | report only (SU) | all year | MW5 |
| Nitrogen, ammonia total [as N] | value | report only (mg/L) | all year | MW5 |
| Nitrogen, nitrate total [as N] | value | report only (mg/L) | all year | MW5 |
| Chloride [as Cl] | value | report only (mg/L) | all year | MW5 |
| Depth to water level ft below landsurface | value | report only (ft) | all year | MW5 |
| Conductivity | value | report only (umho/cm) | all year | MW6 |
| pH | value | report only (SU) | all year | MW6 |
| Nitrogen, ammonia total [as N] | value | report only (mg/L) | all year | MW6 |
| Nitrogen, nitrate total [as N] | value | report only (mg/L) | all year | MW6 |
| Chloride [as Cl] | value | report only (mg/L) | all year | MW6 |
| Depth to water level ft below landsurface | value | report only (ft) | all year | MW6 |
| Conductivity | value | report only (umho/cm) | all year | MW7 |
| pH | value | report only (SU) | all year | MW7 |
| Nitrogen, ammonia total [as N] | value | report only (mg/L) | all year | MW7 |
| Nitrogen, nitrate total [as N] | value | report only (mg/L) | all year | MW7 |
| Chloride [as Cl] | value | report only (mg/L) | all year | MW7 |
| Depth to water level ft below landsurface | value | report only (ft) | all year | MW7 |
Cited limits by parameter: Nebraska's rules and the federal ones.
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