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Sewage treatment plant, Salem, West Virginia. NPDES permit WV0020257, in force until Nov 6, 2028. Last 12 months: over a limit 46 times (last August 2026), 4 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Outfall | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|---|
| October 2025 | IU03 | BOD, 5-day, 20 deg. C, daily maximum | 957 mg/L | ≤ 300 mg/L | 219% |
| October 2025 | IU03 | BOD, 5-day, 20 deg. C, daily maximum | 957 mg/L | ≤ 600 mg/L | 60% |
| October 2025 | IU03 | Oil and grease, hexane extr method, daily maximum | 951 mg/L | ≤ 200 mg/L | 376% |
| October 2025 | IU03 | Oil and grease, hexane extr method, daily maximum | 951 mg/L | ≤ 50 mg/L | 1802% |
| October 2025 | IU09 | Flow rate, daily maximum | 348330 gal/d | ≤ 20000 gal/d | 1642% |
| November 2025 | IU03 | Oil and grease, hexane extr method, daily maximum | 78.5 mg/L | ≤ 50 mg/L | 57% |
| November 2025 | IU08 | BOD, 5-day, 20 deg. C, daily maximum | 371 mg/L | ≤ 300 mg/L | 24% |
| November 2025 | IU09 | Flow rate, daily maximum | 27300 gal/d | ≤ 20000 gal/d | 37% |
| December 2025 | IU08 | BOD, 5-day, 20 deg. C, daily maximum | 476 mg/L | ≤ 300 mg/L | 59% |
| December 2025 | IU08 | Oil and grease, hexane extr method, daily maximum | 94.6 mg/L | ≤ 50 mg/L | 89% |
| December 2025 | IU08 | Solids, total suspended, daily maximum | 3600 mg/L | ≤ 300 mg/L | 1100% |
| December 2025 | IU09 | Flow rate, daily maximum | 488851 gal/d | ≤ 20000 gal/d | 2344% |
| January 2026 | IU03 | Oil and grease, hexane extr method, daily maximum | 58.9 mg/L | ≤ 50 mg/L | 18% |
| January 2026 | IU08 | BOD, 5-day, 20 deg. C, daily maximum | 621 mg/L | ≤ 600 mg/L | 4% |
| January 2026 | IU09 | BOD, 5-day, 20 deg. C, daily maximum | 470 mg/L | ≤ 300 mg/L | 57% |
| January 2026 | IU09 | Flow rate, daily maximum | 24675 gal/d | ≤ 20000 gal/d | 23% |
| February 2026 | 001 | Coliform, fecal general, daily maximum | 2419.6 #/100mL | ≤ 400 #/100mL | 505% |
| February 2026 | 001 | Coliform, fecal general, monthly geometric mean | 227 #/100mL | ≤ 200 #/100mL | 14% |
| February 2026 | IU03 | Oil and grease, hexane extr method, daily maximum | 55.9 mg/L | ≤ 50 mg/L | 12% |
| February 2026 | IU08 | BOD, 5-day, 20 deg. C, daily maximum | 338 mg/L | ≤ 300 mg/L | 13% |
| February 2026 | IU08 | Solids, total suspended, daily maximum | 690 mg/L | ≤ 300 mg/L | 130% |
| February 2026 | IU09 | BOD, 5-day, 20 deg. C, daily maximum | 1288 mg/L | ≤ 300 mg/L | 329% |
| February 2026 | IU09 | BOD, 5-day, 20 deg. C, daily maximum | 1288 mg/L | ≤ 600 mg/L | 115% |
| February 2026 | IU09 | Flow rate, daily maximum | 30475 gal/d | ≤ 20000 gal/d | 52% |
| March 2026 | IU08 | BOD, 5-day, 20 deg. C, daily maximum | 575 mg/L | ≤ 300 mg/L | 92% |
| March 2026 | IU08 | BOD, 5-day, 20 deg. C, daily maximum | 697 mg/L | ≤ 600 mg/L | 16% |
| March 2026 | IU08 | Oil and grease, hexane extr method, daily maximum | 185 mg/L | ≤ 50 mg/L | 270% |
| March 2026 | IU09 | BOD, 5-day, 20 deg. C, daily maximum | 1292 mg/L | ≤ 300 mg/L | 331% |
| March 2026 | IU09 | BOD, 5-day, 20 deg. C, daily maximum | 1292 mg/L | ≤ 600 mg/L | 115% |
| March 2026 | IU09 | Flow rate, daily maximum | 31800 gal/d | ≤ 20000 gal/d | 59% |
| April 2026 | IU03 | Oil and grease, hexane extr method, daily maximum | 92.91 mg/L | ≤ 50 mg/L | 86% |
| April 2026 | IU08 | BOD, 5-day, 20 deg. C, daily maximum | 620 mg/L | ≤ 600 mg/L | 3% |
| April 2026 | IU09 | BOD, 5-day, 20 deg. C, daily maximum | 306 mg/L | ≤ 300 mg/L | 2% |
| April 2026 | IU09 | Flow rate, daily maximum | 32400 gal/d | ≤ 20000 gal/d | 62% |
| May 2026 | IU03 | Flow rate, daily maximum | 20542 gal/d | ≤ 20000 gal/d | 3% |
| May 2026 | IU08 | BOD, 5-day, 20 deg. C, daily maximum | 682 mg/L | ≤ 600 mg/L | 14% |
| May 2026 | IU08 | Oil and grease, hexane extr method, daily maximum | 620 mg/L | ≤ 200 mg/L | 210% |
| May 2026 | IU08 | Oil and grease, hexane extr method, daily maximum | 97 mg/L | ≤ 50 mg/L | 94% |
| May 2026 | IU08 | Solids, total suspended, daily maximum | 1320 mg/L | ≤ 600 mg/L | 120% |
| May 2026 | IU09 | Flow rate, daily maximum | 32105 gal/d | ≤ 20000 gal/d | 61% |
| June 2026 | IU03 | BOD, 5-day, 20 deg. C, daily maximum | 1320 mg/L | ≤ 600 mg/L | 120% |
| June 2026 | IU09 | Flow rate, daily maximum | 45800 gal/d | ≤ 20000 gal/d | 129% |
| July 2026 | IU09 | Flow rate, daily maximum | 39100 gal/d | ≤ 20000 gal/d | 96% |
| August 2026 | 001 | Copper, total recoverable, monthly average | .008 mg/L | ≤ .007 mg/L | 14% |
| August 2026 | IU03 | BOD, 5-day, 20 deg. C, daily maximum | 573 mg/L | ≤ 300 mg/L | 91% |
| August 2026 | IU09 | Flow rate, daily maximum | 31559 gal/d | ≤ 20000 gal/d | 58% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 7.4 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 6.5 mg/L | May–Oct | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 13 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 13 mg/L | May–Oct | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 26 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 21.7 lb/d | May–Oct | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 43.4 lb/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 43.4 lb/d | May–Oct | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 86.8 lb/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 001 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 100 lb/d | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 200 lb/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 | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1 mg/L | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2 mg/L | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 6.7 lb/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3.3 lb/d | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 13.4 lb/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.7 lb/d | May–Oct | 001 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | 001 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 001 |
| Zinc, total recoverable | monthly average | report only (mg/L) | all year | 001 |
| Zinc, total recoverable | daily maximum | report only (mg/L) | all year | 001 |
| Aluminum, total recoverable | monthly average | report only (mg/L) | all year | 001 |
| Aluminum, total recoverable | daily maximum | report only (mg/L) | all year | 001 |
| Lead, total recoverable | monthly average | ≤ .0024 mg/L | all year | 001 |
| Lead, total recoverable | daily maximum | ≤ .0041 mg/L | all year | 001 |
| Copper, total recoverable | monthly average | ≤ .007 mg/L | all year | 001 |
| Copper, total recoverable | daily maximum | ≤ .013 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 maximum | report only (MGD) | all year | 001 |
| Coliform, fecal general | monthly geometric mean | ≤ 200 #/100mL | all year | 001 |
| Coliform, fecal general | daily maximum | ≤ 400 #/100mL | all year | 001 |
| BOD, 5-day, percent removal | monthly average minimum | ≥ 85 % | all year | 001 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year | 001 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 120 deg F | all year | IU03 |
| Flow rate | monthly average | report only (gal/d) | all year | IU03 |
| Flow rate | daily maximum | ≤ 20000 gal/d | all year | IU03 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | IU03 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 300 mg/L | all year | IU03 |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) | all year | IU03 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (lb/d) | all year | IU03 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | IU03 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 600 mg/L | all year | IU03 |
| pH | instantaneous minimum | ≥ 5 SU | all year | IU03 |
| pH | instantaneous maximum | ≤ 10 SU | all year | IU03 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | IU03 |
| Solids, total suspended | daily maximum | ≤ 300 mg/L | all year | IU03 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | IU03 |
| Solids, total suspended | daily maximum | ≤ 600 mg/L | all year | IU03 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | IU03 |
| Oil and grease, hexane extr method | daily maximum | ≤ 50 mg/L | all year | IU03 |
| Oil and grease, hexane extr method | monthly average | report only (lb/d) | all year | IU03 |
| Oil and grease, hexane extr method | daily maximum | report only (lb/d) | all year | IU03 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | IU03 |
| Oil and grease, hexane extr method | daily maximum | ≤ 200 mg/L | all year | IU03 |
| Chemical Oxygen Demand [COD] | monthly average | report only (mg/L) | all year | IU03 |
| Chemical Oxygen Demand [COD] | daily maximum | report only (mg/L) | all year | IU03 |
| Chemical Oxygen Demand [COD] | monthly average | report only (lb/d) | all year | IU03 |
| Chemical Oxygen Demand [COD] | daily maximum | report only (lb/d) | all year | IU03 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | IU08 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 120 deg F | all year | IU08 |
| Flow rate | monthly average | report only (gal/d) | all year | IU08 |
| Flow rate | daily maximum | ≤ 50000 gal/d | all year | IU08 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 300 mg/L | all year | IU08 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | IU08 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 600 mg/L | all year | IU08 |
| pH | instantaneous minimum | ≥ 5 SU | all year | IU08 |
| pH | instantaneous maximum | ≤ 10 SU | all year | IU08 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | IU08 |
| Solids, total suspended | daily maximum | ≤ 300 mg/L | all year | IU08 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | IU08 |
| Solids, total suspended | daily maximum | ≤ 600 mg/L | all year | IU08 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | IU08 |
| Oil and grease, hexane extr method | daily maximum | ≤ 50 mg/L | all year | IU08 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | IU08 |
| Oil and grease, hexane extr method | daily maximum | ≤ 200 mg/L | all year | IU08 |
| Chemical Oxygen Demand [COD] | monthly average | report only (mg/L) | all year | IU08 |
| Chemical Oxygen Demand [COD] | daily maximum | report only (mg/L) | all year | IU08 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | IU09 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 120 deg F | all year | IU09 |
| Flow rate | monthly average | report only (gal/d) | all year | IU09 |
| Flow rate | daily maximum | ≤ 20000 gal/d | all year | IU09 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | IU09 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 300 mg/L | all year | IU09 |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) | all year | IU09 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (lb/d) | all year | IU09 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | IU09 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 600 mg/L | all year | IU09 |
| pH | instantaneous minimum | ≥ 5 SU | all year | IU09 |
| pH | instantaneous maximum | ≤ 10 SU | all year | IU09 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | IU09 |
| Solids, total suspended | daily maximum | ≤ 300 mg/L | all year | IU09 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | IU09 |
| Solids, total suspended | daily maximum | report only (lb/d) | all year | IU09 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | IU09 |
| Solids, total suspended | daily maximum | ≤ 600 mg/L | all year | IU09 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | IU09 |
| Oil and grease, hexane extr method | daily maximum | ≤ 50 mg/L | all year | IU09 |
| Oil and grease, hexane extr method | monthly average | report only (lb/d) | all year | IU09 |
| Oil and grease, hexane extr method | daily maximum | report only (lb/d) | all year | IU09 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | IU09 |
| Oil and grease, hexane extr method | daily maximum | ≤ 200 mg/L | all year | IU09 |
| Chemical Oxygen Demand [COD] | monthly average | report only (mg/L) | all year | IU09 |
| Chemical Oxygen Demand [COD] | daily maximum | report only (mg/L) | all year | IU09 |
| Chemical Oxygen Demand [COD] | monthly average | report only (lb/d) | all year | IU09 |
| Chemical Oxygen Demand [COD] | daily maximum | report only (lb/d) | all year | IU09 |
Cited limits by parameter: West Virginia's rules and the federal ones.
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