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Sewage treatment plant, major discharger, Nitro, West Virginia. NPDES permit WV0037486, in force until May 22, 2027. Last 12 months: over a limit 5 times (last February 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| December 2025 | Solids, suspended percent removal, monthly average minimum | 78 % | ≥ 85 % | 47% |
| January 2026 | BOD, 5-day, percent removal, monthly average minimum | 84 % | ≥ 85 % | 7% |
| January 2026 | Solids, suspended percent removal, monthly average minimum | 82 % | ≥ 85 % | 20% |
| January 2026 | Solids, total suspended, daily maximum | 67 mg/L | ≤ 60 mg/L | 12% |
| February 2026 | BOD, 5-day, percent removal, monthly average minimum | 82 % | ≥ 85 % | 20% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | monthly average | ≤ 20 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 40 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 467 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 934 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 | ≤ 700.5 lb/d | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 1401 lb/d | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 15 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 30 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 350.3 lb/d | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 700.6 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 |
| 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 |
| 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 |
| Toxicity [acute], Ceriodaphnia dubia | monthly average | report only (tox acute) | all year | 001 |
| Toxicity [acute], Ceriodaphnia dubia | daily maximum | report only (tox acute) | all year | 001 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | monthly average | report only (tox acute) | all year | 001 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | daily maximum | report only (tox acute) | all year | 001 |
| Mercury, total [as Hg] | monthly average | ≤ .009 ug/L | all year | 001 |
| Mercury, total [as Hg] | daily maximum | ≤ .022 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 | ≤ 20 mg/L | all year | 101 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 40 mg/L | all year | 101 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 316.9 lb/d | all year | 101 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 633.8 lb/d | all year | 101 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 101 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 101 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 101 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 101 |
| Solids, total suspended | monthly average | ≤ 475.4 lb/d | all year | 101 |
| Solids, total suspended | daily maximum | ≤ 950.8 lb/d | all year | 101 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 101 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 101 |
| BOD, 5-day, percent removal | monthly average minimum | ≥ 85 % | all year | 101 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year | 101 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 20 mg/L | all year | 102 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 40 mg/L | all year | 102 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 150.1 lb/d | all year | 102 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 300.2 lb/d | all year | 102 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 102 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 102 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 102 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 102 |
| Solids, total suspended | monthly average | ≤ 225.2 lb/d | all year | 102 |
| Solids, total suspended | daily maximum | ≤ 450.4 lb/d | all year | 102 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 102 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 102 |
| BOD, 5-day, percent removal | monthly average minimum | ≥ 85 % | all year | 102 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year | 102 |
| Flow rate | monthly average | report only (gal/d) | all year | IU01 |
| Flow rate | daily maximum | ≤ 100000 gal/d | all year | IU01 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | IU01 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | IU01 |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) | all year | IU01 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 100 lb/d | all year | IU01 |
| pH | instantaneous minimum | ≥ 5 SU | all year | IU01 |
| pH | instantaneous maximum | ≤ 10 SU | all year | IU01 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | IU01 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | IU01 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | IU01 |
| Solids, total suspended | daily maximum | ≤ 300 lb/d | all year | IU01 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | IU01 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | IU01 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (lb/d) | all year | IU01 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | ≤ 50 lb/d | all year | IU01 |
| Cyanide, total [as CN] | monthly average | report only (mg/L) | all year | IU01 |
| Cyanide, total [as CN] | daily maximum | report only (mg/L) | all year | IU01 |
| Cyanide, total [as CN] | monthly average | report only (lb/d) | all year | IU01 |
| Cyanide, total [as CN] | daily maximum | ≤ .034 lb/d | all year | IU01 |
| Arsenic, total [as As] | monthly average | report only (mg/L) | all year | IU01 |
| Arsenic, total [as As] | daily maximum | report only (mg/L) | all year | IU01 |
| Arsenic, total [as As] | monthly average | report only (lb/d) | all year | IU01 |
| Arsenic, total [as As] | daily maximum | ≤ .01 lb/d | all year | IU01 |
| Cadmium, total [as Cd] | monthly average | report only (mg/L) | all year | IU01 |
| Cadmium, total [as Cd] | daily maximum | report only (mg/L) | all year | IU01 |
| Cadmium, total [as Cd] | monthly average | report only (lb/d) | all year | IU01 |
| Cadmium, total [as Cd] | daily maximum | ≤ .0035 lb/d | all year | IU01 |
| Chromium, total [as Cr] | monthly average | report only (mg/L) | all year | IU01 |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year | IU01 |
| Chromium, total [as Cr] | monthly average | report only (lb/d) | all year | IU01 |
| Chromium, total [as Cr] | daily maximum | ≤ .2 lb/d | 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 | ≤ .19 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 | ≤ .02 lb/d | all year | IU01 |
| Nickel, total [as Ni] | monthly average | report only (mg/L) | all year | IU01 |
| Nickel, total [as Ni] | daily maximum | report only (mg/L) | all year | IU01 |
| Nickel, total [as Ni] | monthly average | report only (lb/d) | all year | IU01 |
| Nickel, total [as Ni] | daily maximum | ≤ .12 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 | ≤ .18 lb/d | all year | IU01 |
| Mercury, total [as Hg] | monthly average | report only (ug/L) | all year | IU01 |
| Mercury, total [as Hg] | daily maximum | report only (ug/L) | all year | IU01 |
| Mercury, total [as Hg] | monthly average | report only (lb/d) | all year | IU01 |
| Mercury, total [as Hg] | daily maximum | ≤ .00035 lb/d | all year | IU01 |
| Flow rate | monthly average | report only (gal/d) | all year | IU02 |
| Flow rate | daily maximum | ≤ 6500 gal/d | all year | IU02 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | IU02 |
| Oil and grease, hexane extr method | daily maximum | ≤ 100 mg/L | all year | IU02 |
| Oil and grease, hexane extr method | monthly average | report only (lb/d) | all year | IU02 |
| Oil and grease, hexane extr method | daily maximum | report only (lb/d) | all year | IU02 |
| Flow rate | monthly average | report only (gal/d) | all year | IU05 |
| Flow rate | daily maximum | ≤ 500 gal/d | all year | IU05 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | IU05 |
| Oil and grease, hexane extr method | daily maximum | report only (mg/L) | all year | IU05 |
| Oil and grease, hexane extr method | monthly average | report only (lb/d) | all year | IU05 |
| Oil and grease, hexane extr method | daily maximum | report only (lb/d) | all year | IU05 |
| Copper, total [as Cu] | monthly average | report only (mg/L) | all year | IU05 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | IU05 |
| Copper, total [as Cu] | monthly average | report only (lb/d) | all year | IU05 |
| Copper, total [as Cu] | daily maximum | report only (lb/d) | all year | IU05 |
| Zinc, total [as Zn] | monthly average | report only (mg/L) | all year | IU05 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | IU05 |
| Zinc, total [as Zn] | monthly average | report only (lb/d) | all year | IU05 |
| Zinc, total [as Zn] | daily maximum | report only (lb/d) | all year | IU05 |
Cited limits by parameter: West Virginia's rules and the federal ones.
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On EPA ECHO: Facility report · DMR history
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