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Sewage treatment plant, major discharger, Oak Hill, West Virginia. NPDES permit WV0020281, in force until May 2, 2027. Last 12 months: over a limit 20 times (last June 2026), 2 of 58 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Outfall | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|---|
| October 2025 | 002 | Coliform, fecal general, monthly geometric mean | 373 #/100mL | ≤ 200 #/100mL | 87% |
| October 2025 | 002 | Copper, total recoverable, monthly average | .0077 mg/L | ≤ .006 mg/L | 28% |
| November 2025 | 001 | Coliform, fecal general, daily maximum | 760 #/100mL | ≤ 400 #/100mL | 90% |
| November 2025 | 002 | Copper, total recoverable, monthly average | .0063 mg/L | ≤ .006 mg/L | 5% |
| November 2025 | 002 | Solids, suspended percent removal, monthly average minimum | 84.4 % | ≥ 85 % | 4% |
| December 2025 | 001 | Copper, total recoverable, daily maximum | .071 mg/L | ≤ .012 mg/L | 492% |
| December 2025 | 001 | Copper, total recoverable, monthly average | .034 mg/L | ≤ .006 mg/L | 467% |
| December 2025 | 001 | Solids, suspended percent removal, monthly average minimum | 78.3 % | ≥ 85 % | 45% |
| January 2026 | 001 | Copper, total recoverable, daily maximum | .042 mg/L | ≤ .012 mg/L | 250% |
| January 2026 | 001 | Copper, total recoverable, monthly average | .019 mg/L | ≤ .006 mg/L | 217% |
| January 2026 | 001 | Zinc, total recoverable, daily maximum | .143 mg/L | ≤ .105 mg/L | 36% |
| January 2026 | 001 | Zinc, total recoverable, monthly average | .075 mg/L | ≤ .056 mg/L | 34% |
| February 2026 | 001 | BOD, 5-day, percent removal, monthly average minimum | 84.9 % | ≥ 85 % | 1% |
| February 2026 | 001 | Copper, total recoverable, daily maximum | .0218 mg/L | ≤ .012 mg/L | 82% |
| February 2026 | 001 | Copper, total recoverable, monthly average | .0094 mg/L | ≤ .006 mg/L | 57% |
| February 2026 | 002 | Solids, suspended percent removal, monthly average minimum | 81.8 % | ≥ 85 % | 21% |
| April 2026 | 001 | Nitrogen, ammonia total [as N], daily maximum | 17.5 mg/L | ≤ 13.7 mg/L | 28% |
| April 2026 | 001 | Zinc, total recoverable, daily maximum | .11 mg/L | ≤ .105 mg/L | 5% |
| June 2026 | 002 | Solids, suspended percent removal, monthly average minimum | 83.33 % | ≥ 85 % | 11% |
| June 2026 | IU01 | Oil and grease, hexane extr method, daily maximum | 43 mg/L | ≤ 30 mg/L | 43% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 6 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 | daily maximum | ≤ 60 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 325 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 650 lb/d | all year | 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 | ≤ 325 lb/d | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 650 lb/d | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 6.8 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 13.7 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 74 lb/d | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 149 lb/d | all year | 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 |
| 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 |
| 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 | ≤ .056 mg/L | all year | 001 |
| Zinc, total recoverable | daily maximum | ≤ .105 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 | ≤ .002 mg/L | all year | 001 |
| Lead, total recoverable | daily maximum | ≤ .005 mg/L | all year | 001 |
| Copper, total recoverable | monthly average | ≤ .006 mg/L | all year | 001 |
| Copper, total recoverable | daily maximum | ≤ .012 mg/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 | ≤ 0 mg/L | all year | 001 |
| Chlorine, total residual | daily maximum | ≤ 0 mg/L | 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, percent removal | monthly average minimum | ≥ 85 % | all year | 001 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year | 001 |
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 6 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 | daily maximum | ≤ 60 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 150 lb/d | all year | 002 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 300 lb/d | all year | 002 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 002 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 002 |
| Solids, total suspended | monthly average | ≤ 150 lb/d | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 300 lb/d | all year | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 6.8 mg/L | all year | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 13.7 mg/L | all year | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 34 lb/d | all year | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 69 lb/d | all year | 002 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | 002 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 002 |
| Zinc, total recoverable | monthly average | ≤ .065 mg/L | all year | 002 |
| Zinc, total recoverable | daily maximum | ≤ .102 mg/L | all year | 002 |
| Lead, total recoverable | monthly average | report only (mg/L) | all year | 002 |
| Lead, total recoverable | daily maximum | report only (mg/L) | all year | 002 |
| Copper, total recoverable | monthly average | ≤ .006 mg/L | all year | 002 |
| Copper, total recoverable | daily maximum | ≤ .012 mg/L | all year | 002 |
| Flow, in conduit or thru treatment plant | minimum | report only (MGD) | all year | 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 |
| Chlorine, total residual | monthly average | ≤ 0 mg/L | all year | 002 |
| Chlorine, total residual | daily maximum | ≤ 0 mg/L | all year | 002 |
| Coliform, fecal general | monthly geometric mean | ≤ 200 #/100mL | all year | 002 |
| Coliform, fecal general | daily maximum | ≤ 400 #/100mL | all year | 002 |
| BOD, 5-day, percent removal | monthly average minimum | ≥ 85 % | all year | 002 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year | 002 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 006 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 006 |
| pH | instantaneous minimum | report only (SU) | all year | 006 |
| pH | instantaneous maximum | report only (SU) | all year | 006 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 006 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 006 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | 006 |
| Oil and grease, hexane extr method | daily maximum | report only (mg/L) | all year | 006 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 006 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 006 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 006 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 006 |
| Coliform, fecal general | monthly geometric mean | report only (#/100mL) | all year | 006 |
| Coliform, fecal general | daily maximum | ≤ 400 #/100mL | all year | 006 |
| Chemical Oxygen Demand [COD] | monthly average | report only (mg/L) | all year | 006 |
| Chemical Oxygen Demand [COD] | daily maximum | report only (mg/L) | all year | 006 |
| Flow rate | monthly average | report only (gal/d) | all year | IU01 |
| Flow rate | daily maximum | ≤ 1000 gal/d | all year | IU01 |
| pH | instantaneous minimum | ≥ 6 SU | all year | IU01 |
| pH | instantaneous maximum | ≤ 9 SU | all year | IU01 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | IU01 |
| Solids, total suspended | daily maximum | ≤ 250 mg/L | all year | IU01 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | IU01 |
| Oil and grease, hexane extr method | daily maximum | ≤ 30 mg/L | all year | IU01 |
| Copper, total [as Cu] | monthly average | report only (mg/L) | all year | IU01 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | IU01 |
| Copper, total [as Cu] | monthly average | report only (lb/d) | all year | IU01 |
| Copper, total [as Cu] | daily maximum | report only (lb/d) | all year | IU01 |
| Lead, total [as Pb] | monthly average | report only (mg/L) | all year | IU01 |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year | IU01 |
| Lead, total [as Pb] | monthly average | report only (lb/d) | all year | IU01 |
| Lead, total [as Pb] | daily maximum | report only (lb/d) | all year | IU01 |
| Zinc, total [as Zn] | monthly average | report only (mg/L) | all year | IU01 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | IU01 |
| Zinc, total [as Zn] | monthly average | report only (lb/d) | all year | IU01 |
| Zinc, total [as Zn] | daily maximum | report only (lb/d) | all year | IU01 |
| Flow rate | monthly average | report only (gal/d) | all year | IU04 |
| Flow rate | daily maximum | ≤ 32000 gal/d | all year | IU04 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | IU04 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | IU04 |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) | all year | IU04 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 12.5 lb/d | all year | IU04 |
| pH | instantaneous minimum | ≥ 5 SU | all year | IU04 |
| pH | instantaneous maximum | ≤ 10 SU | all year | IU04 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | IU04 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | IU04 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | IU04 |
| Solids, total suspended | daily maximum | ≤ 12.5 lb/d | all year | IU04 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | IU04 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | IU04 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (lb/d) | all year | IU04 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | ≤ 5 lb/d | all year | IU04 |
| Cyanide, total [as CN] | monthly average | report only (mg/L) | all year | IU04 |
| Cyanide, total [as CN] | daily maximum | report only (mg/L) | all year | IU04 |
| Cyanide, total [as CN] | monthly average | report only (lb/d) | all year | IU04 |
| Cyanide, total [as CN] | daily maximum | ≤ .01 lb/d | all year | IU04 |
| Arsenic, total [as As] | monthly average | report only (mg/L) | all year | IU04 |
| Arsenic, total [as As] | daily maximum | report only (mg/L) | all year | IU04 |
| Arsenic, total [as As] | monthly average | report only (lb/d) | all year | IU04 |
| Arsenic, total [as As] | daily maximum | ≤ .001 lb/d | all year | IU04 |
| Cadmium, total [as Cd] | monthly average | report only (mg/L) | all year | IU04 |
| Cadmium, total [as Cd] | daily maximum | report only (mg/L) | all year | IU04 |
| Cadmium, total [as Cd] | monthly average | report only (lb/d) | all year | IU04 |
| Cadmium, total [as Cd] | daily maximum | ≤ .0001 lb/d | all year | IU04 |
| Chromium, hexavalent [as Cr] | monthly average | report only (mg/L) | all year | IU04 |
| Chromium, hexavalent [as Cr] | daily maximum | report only (mg/L) | all year | IU04 |
| Chromium, hexavalent [as Cr] | monthly average | report only (lb/d) | all year | IU04 |
| Chromium, hexavalent [as Cr] | daily maximum | ≤ .01 lb/d | all year | IU04 |
| Copper, total [as Cu] | monthly average | report only (mg/L) | all year | IU04 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | IU04 |
| Copper, total [as Cu] | monthly average | report only (lb/d) | all year | IU04 |
| Copper, total [as Cu] | daily maximum | ≤ .05 lb/d | all year | IU04 |
| Lead, total [as Pb] | monthly average | report only (mg/L) | all year | IU04 |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year | IU04 |
| Lead, total [as Pb] | monthly average | report only (lb/d) | all year | IU04 |
| Lead, total [as Pb] | daily maximum | ≤ .01 lb/d | all year | IU04 |
| Nickel, total [as Ni] | monthly average | report only (mg/L) | all year | IU04 |
| Nickel, total [as Ni] | daily maximum | report only (mg/L) | all year | IU04 |
| Nickel, total [as Ni] | monthly average | report only (lb/d) | all year | IU04 |
| Nickel, total [as Ni] | daily maximum | ≤ .05 lb/d | all year | IU04 |
| Silver, total [as Ag] | monthly average | report only (mg/L) | all year | IU04 |
| Silver, total [as Ag] | daily maximum | report only (mg/L) | all year | IU04 |
| Silver, total [as Ag] | monthly average | report only (lb/d) | all year | IU04 |
| Silver, total [as Ag] | daily maximum | ≤ .0005 lb/d | all year | IU04 |
| Zinc, total [as Zn] | monthly average | report only (mg/L) | all year | IU04 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | IU04 |
| Zinc, total [as Zn] | monthly average | report only (lb/d) | all year | IU04 |
| Zinc, total [as Zn] | daily maximum | ≤ .05 lb/d | all year | IU04 |
| Mercury, total [as Hg] | monthly average | report only (mg/L) | all year | IU04 |
| Mercury, total [as Hg] | daily maximum | report only (mg/L) | all year | IU04 |
| Mercury, total [as Hg] | monthly average | report only (lb/d) | all year | IU04 |
| Mercury, total [as Hg] | daily maximum | ≤ .00035 lb/d | all year | IU04 |
Cited limits by parameter: West Virginia's rules and the federal ones.
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