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Sewage treatment plant, major discharger, Clarksburg, West Virginia. NPDES permit WV0023302, in force until Apr 28, 2030. Last 12 months: no values over a limit, 202 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 7 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 20 mg/L | May–Oct | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 60 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 40 mg/L | May–Oct | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 3002 lb/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 2002 lb/d | May–Oct | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 6005 lb/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 4003 lb/d | May–Oct | 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 | ≤ 3002 lb/d | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 6005 lb/d | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 11 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 5.5 mg/L | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 22 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 11 mg/L | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1101 lb/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 550 lb/d | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2202 lb/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 1101 lb/d | May–Oct | 001 |
| Cyanide, weak acid, dissociable | monthly average | report only (mg/L) | all year | 001 |
| Cyanide, weak acid, dissociable | daily maximum | report only (mg/L) | all year | 001 |
| Fluoride, total [as F] | monthly average | report only (mg/L) | all year | 001 |
| Fluoride, total [as F] | daily maximum | report only (mg/L) | all year | 001 |
| Arsenic, total [as As] | monthly average | report only (mg/L) | all year | 001 |
| Arsenic, total [as As] | daily maximum | report only (mg/L) | all year | 001 |
| Chromium, hexavalent [as Cr] | monthly average | report only (mg/L) | all year | 001 |
| Chromium, hexavalent [as Cr] | daily maximum | report only (mg/L) | all year | 001 |
| Nickel, total recoverable | monthly average | report only (mg/L) | all year | 001 |
| Nickel, total recoverable | daily maximum | report only (mg/L) | all year | 001 |
| Silver total recoverable | monthly average | report only (mg/L) | all year | 001 |
| Silver total recoverable | 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 |
| Cadmium, total recoverable | monthly average | report only (mg/L) | all year | 001 |
| Cadmium, total recoverable | daily maximum | report only (mg/L) | all year | 001 |
| Lead, total recoverable | monthly average | report only (mg/L) | all year | 001 |
| Lead, total recoverable | daily maximum | report only (mg/L) | all year | 001 |
| Copper, total recoverable | monthly average | report only (mg/L) | all year | 001 |
| Copper, total recoverable | daily maximum | report only (mg/L) | all year | 001 |
| Bromodichloromethane, effluent | monthly average | report only (ug/L) | all year | 001 |
| Bromodichloromethane, effluent | daily maximum | report only (ug/L) | all year | 001 |
| Flow, in conduit or thru treatment plant | minimum | report only (MGD) | 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 |
| Chlorine, total residual | monthly average | ≤ .028 mg/L | all year | 001 |
| Chlorine, total residual | daily maximum | ≤ .057 mg/L | all year | 001 |
| BOD, 5 day percent removal, dry | monthly average minimum | ≥ 85 % | all year | 001 |
| BOD, 5 day percent removal, wet | monthly average minimum | ≥ 75 % | all year | 001 |
| Solids, suspended percent removal, dry | monthly average minimum | ≥ 85 % | all year | 001 |
| Solids, suspended percent removal, wet | monthly average minimum | ≥ 70 % | all year | 001 |
| Toxicity [chronic], Ceriodaphnia dubia | monthly average | report only (tox chronic) | all year | 001 |
| Toxicity [chronic], Ceriodaphnia dubia | daily maximum | report only (tox chronic) | all year | 001 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | monthly average | report only (tox chronic) | all year | 001 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | daily maximum | report only (tox chronic) | all year | 001 |
| Mercury, total [as Hg] | monthly average | report only (ug/L) | all year | 001 |
| Mercury, total [as Hg] | daily maximum | report only (ug/L) | 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, 20 deg. C | monthly average | report only (mg/L) | all year | 085 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 085 |
| pH | instantaneous minimum | report only (SU) | all year | 085 |
| pH | instantaneous maximum | report only (SU) | all year | 085 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 085 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 085 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | 085 |
| Oil and grease, hexane extr method | daily maximum | report only (mg/L) | all year | 085 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 085 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 085 |
| Iron, total recoverable | monthly average | report only (mg/L) | all year | 085 |
| Iron, total recoverable | monthly average | report only (mg/L) | all year | 085 |
| Iron, total recoverable | daily maximum | report only (mg/L) | all year | 085 |
| Iron, total recoverable | daily maximum | report only (mg/L) | all year | 085 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 085 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 085 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 085 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 085 |
| Coliform, fecal general | monthly average | report only (#/100mL) | all year | 085 |
| Coliform, fecal general | monthly average | report only (#/100mL) | all year | 085 |
| Coliform, fecal general | daily maximum | ≤ 400 #/100mL | all year | 085 |
| Coliform, fecal general | daily maximum | ≤ 400 #/100mL | all year | 085 |
| Chemical Oxygen Demand [COD] | monthly average | report only (mg/L) | all year | 085 |
| Chemical Oxygen Demand [COD] | daily maximum | report only (mg/L) | all year | 085 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 086 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 086 |
| pH | instantaneous minimum | report only (SU) | all year | 086 |
| pH | instantaneous maximum | report only (SU) | all year | 086 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 086 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 086 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | 086 |
| Oil and grease, hexane extr method | daily maximum | report only (mg/L) | all year | 086 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 086 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 086 |
| Iron, total recoverable | monthly average | report only (mg/L) | all year | 086 |
| Iron, total recoverable | daily maximum | report only (mg/L) | all year | 086 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 086 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 086 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 086 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 086 |
| Coliform, fecal general | monthly average | report only (#/100mL) | all year | 086 |
| Coliform, fecal general | monthly average | report only (#/100mL) | all year | 086 |
| Coliform, fecal general | daily maximum | ≤ 400 #/100mL | all year | 086 |
| Coliform, fecal general | daily maximum | ≤ 400 #/100mL | all year | 086 |
| Chemical Oxygen Demand [COD] | monthly average | report only (mg/L) | all year | 086 |
| Chemical Oxygen Demand [COD] | daily maximum | report only (mg/L) | all year | 086 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 087 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 087 |
| pH | instantaneous minimum | report only (SU) | all year | 087 |
| pH | instantaneous maximum | report only (SU) | all year | 087 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 087 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 087 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | 087 |
| Oil and grease, hexane extr method | daily maximum | report only (mg/L) | all year | 087 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 087 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 087 |
| Iron, total recoverable | monthly average | report only (mg/L) | all year | 087 |
| Iron, total recoverable | daily maximum | report only (mg/L) | all year | 087 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 087 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 087 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 087 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 087 |
| Coliform, fecal general | monthly average | report only (#/100mL) | all year | 087 |
| Coliform, fecal general | monthly average | report only (#/100mL) | all year | 087 |
| Coliform, fecal general | daily maximum | ≤ 400 #/100mL | all year | 087 |
| Coliform, fecal general | daily maximum | ≤ 400 #/100mL | all year | 087 |
| Chemical Oxygen Demand [COD] | monthly average | report only (mg/L) | all year | 087 |
| Chemical Oxygen Demand [COD] | daily maximum | report only (mg/L) | all year | 087 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 088 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 088 |
| pH | instantaneous minimum | report only (SU) | all year | 088 |
| pH | instantaneous maximum | report only (SU) | all year | 088 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 088 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 088 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | 088 |
| Oil and grease, hexane extr method | daily maximum | report only (mg/L) | all year | 088 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 088 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 088 |
| Iron, total recoverable | monthly average | report only (mg/L) | all year | 088 |
| Iron, total recoverable | daily maximum | report only (mg/L) | all year | 088 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 088 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 088 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 088 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 088 |
| Coliform, fecal general | monthly average | report only (#/100mL) | all year | 088 |
| Coliform, fecal general | monthly average | report only (#/100mL) | all year | 088 |
| Coliform, fecal general | daily maximum | ≤ 400 #/100mL | all year | 088 |
| Coliform, fecal general | daily maximum | ≤ 400 #/100mL | all year | 088 |
| Chemical Oxygen Demand [COD] | monthly average | report only (mg/L) | all year | 088 |
| Chemical Oxygen Demand [COD] | daily maximum | report only (mg/L) | all year | 088 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 089 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 089 |
| pH | instantaneous minimum | report only (SU) | all year | 089 |
| pH | instantaneous maximum | report only (SU) | all year | 089 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 089 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 089 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | 089 |
| Oil and grease, hexane extr method | daily maximum | report only (mg/L) | all year | 089 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 089 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 089 |
| Iron, total recoverable | monthly average | report only (mg/L) | all year | 089 |
| Iron, total recoverable | daily maximum | report only (mg/L) | all year | 089 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 089 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 089 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 089 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 089 |
| Coliform, fecal general | monthly average | report only (#/100mL) | all year | 089 |
| Coliform, fecal general | monthly average | report only (#/100mL) | all year | 089 |
| Coliform, fecal general | daily maximum | ≤ 400 #/100mL | all year | 089 |
| Coliform, fecal general | daily maximum | ≤ 400 #/100mL | all year | 089 |
| Chemical Oxygen Demand [COD] | monthly average | report only (mg/L) | all year | 089 |
| Chemical Oxygen Demand [COD] | daily maximum | report only (mg/L) | all year | 089 |
| Parameter | New limit | New or tighter | Median, last 12 months | × new limit |
|---|---|---|---|---|
| Fluoride, total [as F], daily maximum | 2.6 mg/L | new | 0.48 mg/L (11 values) | 0.185× |
| Fluoride, total [as F], monthly average | 1.4 mg/L | new | 0.48 mg/L (11 values) | 0.343× |
Cited limits by parameter: West Virginia's rules and the federal ones.
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