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Industrial Organic Chemicals, major discharger, Willow Island, West Virginia. NPDES permit WV0000787, in force until Feb 17, 2030. Last 12 months: over a limit 4 times (last March 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Outfall | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|---|
| December 2025 | 208 | Coliform, fecal general, daily maximum | 12997 #/100mL | ≤ 400 #/100mL | 3149% |
| December 2025 | 208 | Coliform, fecal general, monthly geometric mean | 1557.5 #/100mL | ≤ 200 #/100mL | 679% |
| March 2026 | 001 | Toluene, daily maximum | 205 lb/d | ≤ 1.79 lb/d | 11353% |
| March 2026 | 001 | Toluene, monthly average | 102 lb/d | ≤ .58 lb/d | 17486% |
| 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 |
| 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 |
| Color [PT-CO units] | monthly average | report only (col unit (pc)) | all year | 001 |
| Color [PT-CO units] | daily maximum | report only (col unit (pc)) | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 1330 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 3310 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 | report only (mg/L) | all year | 001 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 001 |
| Solids, total suspended | monthly average | ≤ 1910 lb/d | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 5300 lb/d | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 800 lb/d | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2287 lb/d | all year | 001 |
| Nitrogen, nitrite total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, nitrite total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, nitrate total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, nitrate total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Cyanide, total [as CN] | monthly average | report only (mg/L) | all year | 001 |
| Cyanide, total [as CN] | daily maximum | report only (mg/L) | all year | 001 |
| Cyanide, total [as CN] | monthly average | ≤ 32.6 lb/d | all year | 001 |
| Cyanide, total [as CN] | daily maximum | ≤ 116.1 lb/d | all year | 001 |
| Cyanide, free [amenable to chlorination] | monthly average | report only (mg/L) | all year | 001 |
| Cyanide, free [amenable to chlorination] | daily maximum | report only (mg/L) | all year | 001 |
| Chloride [as Cl] | monthly average | report only (mg/L) | all year | 001 |
| Chloride [as Cl] | daily maximum | report only (mg/L) | all year | 001 |
| Barium, total [as Ba] | monthly average | report only (mg/L) | all year | 001 |
| Barium, total [as Ba] | daily maximum | report only (mg/L) | all year | 001 |
| Copper, total [as Cu] | monthly average | report only (mg/L) | all year | 001 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 001 |
| Iron, total [as Fe] | monthly average | report only (mg/L) | all year | 001 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year | 001 |
| Nickel, total [as Ni] | monthly average | report only (mg/L) | all year | 001 |
| Nickel, total [as Ni] | daily maximum | report only (mg/L) | all year | 001 |
| Zinc, total [as Zn] | monthly average | report only (mg/L) | all year | 001 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | 001 |
| Aluminum, total [as Al] | monthly average | report only (mg/L) | all year | 001 |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | all year | 001 |
| Chromium, hexavalent dissolved [as Cr] | monthly average | report only (mg/L) | all year | 001 |
| Chromium, hexavalent dissolved [as Cr] | daily maximum | report only (mg/L) | all year | 001 |
| Chloroform | monthly average | report only (ug/L) | all year | 001 |
| Chloroform | daily maximum | report only (ug/L) | all year | 001 |
| Chloroform | monthly average | ≤ .46 lb/d | all year | 001 |
| Chloroform | daily maximum | ≤ .98 lb/d | all year | 001 |
| Phenolics, total recoverable | monthly average | report only (ug/L) | all year | 001 |
| Phenolics, total recoverable | daily maximum | report only (ug/L) | all year | 001 |
| Toluene | monthly average | report only (mg/L) | all year | 001 |
| Toluene | daily maximum | report only (mg/L) | all year | 001 |
| Toluene | monthly average | ≤ .58 lb/d | all year | 001 |
| Toluene | daily maximum | ≤ 1.79 lb/d | all year | 001 |
| Benzene | monthly average | report only (ug/L) | all year | 001 |
| Benzene | daily maximum | report only (ug/L) | all year | 001 |
| Benzene | monthly average | ≤ .8 lb/d | all year | 001 |
| Benzene | daily maximum | ≤ 2.86 lb/d | all year | 001 |
| Ethylbenzene | monthly average | report only (ug/L) | all year | 001 |
| Ethylbenzene | daily maximum | report only (ug/L) | all year | 001 |
| Ethylbenzene | monthly average | ≤ .63 lb/d | all year | 001 |
| Ethylbenzene | daily maximum | ≤ 2.13 lb/d | 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 | report only (ug/L) | all year | 001 |
| Chlorine, total residual | daily maximum | report only (ug/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 | report only (#/100mL) | all year | 001 |
| Coliform, fecal general | daily maximum | report only (#/100mL) | all year | 001 |
| Ethanol | monthly average | report only (ug/L) | all year | 001 |
| Ethanol | daily maximum | report only (ug/L) | all year | 001 |
| Ethanol | monthly average | ≤ 112 lb/d | all year | 001 |
| Ethanol | daily maximum | ≤ 272 lb/d | all year | 001 |
| Methanol, total | monthly average | report only (ug/L) | all year | 001 |
| Methanol, total | daily maximum | report only (ug/L) | all year | 001 |
| Methanol, total | monthly average | ≤ 112 lb/d | all year | 001 |
| Methanol, total | daily maximum | ≤ 272 lb/d | all year | 001 |
| Heptane | monthly average | report only (ug/L) | all year | 001 |
| Heptane | daily maximum | report only (ug/L) | all year | 001 |
| Heptane | monthly average | ≤ .54 lb/d | all year | 001 |
| Heptane | daily maximum | ≤ 1.36 lb/d | all year | 001 |
| Chem. oxygen demand [COD] % removal | monthly average minimum | report only (%) | all year | 001 |
| Chem. oxygen demand [COD] % removal | monthly average | report only (%) | all year | 001 |
| BOD, 5-day, percent removal | monthly average minimum | report only (%) | all year | 001 |
| BOD, 5-day, percent removal | monthly average | report only (%) | all year | 001 |
| Chemical Oxygen Demand [COD] | monthly average | report only (mg/L) | all year | 001 |
| Chemical Oxygen Demand [COD] | daily maximum | report only (mg/L) | all year | 001 |
| Chemical Oxygen Demand [COD] | monthly average | ≤ 4290 lb/d | all year | 001 |
| Chemical Oxygen Demand [COD] | daily maximum | ≤ 8470 lb/d | all year | 001 |
| Sulfate | monthly average | report only (mg/L) | all year | 001 |
| Sulfate | daily maximum | report only (mg/L) | all year | 001 |
| Xylene [mix of m+o+p] | monthly average | report only (ug/L) | all year | 001 |
| Xylene [mix of m+o+p] | daily maximum | report only (ug/L) | all year | 001 |
| Xylene [mix of m+o+p] | monthly average | ≤ .27 lb/d | all year | 001 |
| Xylene [mix of m+o+p] | daily maximum | ≤ .82 lb/d | all year | 001 |
| Acetone | monthly average | report only (ug/L) | all year | 001 |
| Acetone | daily maximum | report only (ug/L) | all year | 001 |
| Acetone | monthly average | ≤ 5.4 lb/d | all year | 001 |
| Acetone | daily maximum | ≤ 13.6 lb/d | all year | 001 |
| Ethyl acetate | monthly average | report only (ug/L) | all year | 001 |
| Ethyl acetate | daily maximum | report only (ug/L) | all year | 001 |
| Ethyl acetate | monthly average | ≤ 13.6 lb/d | all year | 001 |
| Ethyl acetate | daily maximum | ≤ 35.4 lb/d | all year | 001 |
| Methyl isobutyl ketone | monthly average | report only (ug/L) | all year | 001 |
| Methyl isobutyl ketone | daily maximum | report only (ug/L) | all year | 001 |
| Methyl isobutyl ketone | monthly average | ≤ 5.4 lb/d | all year | 001 |
| Methyl isobutyl ketone | daily maximum | ≤ 13.6 lb/d | all year | 001 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 003 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 003 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 003 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 003 |
| Carbon, tot organic [TOC] | monthly average | report only (mg/L) | all year | 003 |
| Carbon, tot organic [TOC] | daily maximum | report only (mg/L) | all year | 003 |
| Iron, total [as Fe] | monthly average | report only (mg/L) | all year | 003 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year | 003 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 004 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 004 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 004 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 004 |
| Carbon, tot organic [TOC] | EPA's "MAX BDL" | report only (mg/L) | all year | 004 |
| Carbon, tot organic [TOC] | daily maximum | report only (mg/L) | all year | 004 |
| Iron, total [as Fe] | monthly average | report only (mg/L) | all year | 004 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year | 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 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 005 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 005 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 005 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 005 |
| Carbon, tot organic [TOC] | monthly average | report only (mg/L) | all year | 005 |
| Carbon, tot organic [TOC] | daily maximum | report only (mg/L) | all year | 005 |
| Iron, total [as Fe] | monthly average | report only (mg/L) | all year | 005 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year | 005 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 005 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 005 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 009 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 009 |
| Solids, total suspended | monthly average | ≤ 13.7 mg/L | all year | 009 |
| Solids, total suspended | daily maximum | ≤ 16.6 mg/L | all year | 009 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 009 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 009 |
| Chloride [as Cl] | monthly average | report only (mg/L) | all year | 009 |
| Chloride [as Cl] | daily maximum | report only (mg/L) | all year | 009 |
| Iron, total [as Fe] | monthly average | report only (mg/L) | all year | 009 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year | 009 |
| Zinc, total [as Zn] | monthly average | report only (mg/L) | all year | 009 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | 009 |
| Aluminum, total [as Al] | monthly average | report only (mg/L) | all year | 009 |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | all year | 009 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 009 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 009 |
| Chlorine, total residual | monthly average | ≤ 28 ug/L | all year | 009 |
| Chlorine, total residual | daily maximum | ≤ 57 ug/L | all year | 009 |
| Coliform, fecal general | monthly geometric mean | ≤ 200 #/100mL | all year | 009 |
| Coliform, fecal general | daily maximum | ≤ 400 #/100mL | all year | 009 |
| Chemical Oxygen Demand [COD] | monthly average | report only (mg/L) | all year | 009 |
| Chemical Oxygen Demand [COD] | daily maximum | report only (mg/L) | all year | 009 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 011 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 011 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 011 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 011 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | 011 |
| Oil and grease, hexane extr method | daily maximum | report only (mg/L) | all year | 011 |
| Carbon, tot organic [TOC] | monthly average | report only (mg/L) | all year | 011 |
| Carbon, tot organic [TOC] | daily maximum | report only (mg/L) | all year | 011 |
| Cyanide, free [amenable to chlorination] | monthly average | report only (mg/L) | all year | 011 |
| Cyanide, free [amenable to chlorination] | daily maximum | report only (mg/L) | all year | 011 |
| Chromium, trivalent [as Cr] | monthly average | report only (mg/L) | all year | 011 |
| Chromium, trivalent [as Cr] | daily maximum | report only (mg/L) | all year | 011 |
| Iron, total [as Fe] | monthly average | ≤ 1.23 mg/L | all year | 011 |
| Iron, total [as Fe] | daily maximum | ≤ 2.19 mg/L | all year | 011 |
| Zinc, total [as Zn] | monthly average | report only (mg/L) | all year | 011 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | 011 |
| Antimony, total [as Sb] | monthly average | report only (mg/L) | all year | 011 |
| Antimony, total [as Sb] | daily maximum | report only (mg/L) | all year | 011 |
| Aluminum, total [as Al] | monthly average | report only (mg/L) | all year | 011 |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | all year | 011 |
| Lead, total recoverable | monthly average | report only (mg/L) | all year | 011 |
| Lead, total recoverable | daily maximum | report only (mg/L) | all year | 011 |
| Benzene | monthly average | report only (ug/L) | all year | 011 |
| Benzene | daily maximum | report only (ug/L) | all year | 011 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 011 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 011 |
| Chemical Oxygen Demand [COD] | monthly average | report only (mg/L) | all year | 011 |
| Chemical Oxygen Demand [COD] | daily maximum | report only (mg/L) | all year | 011 |
| pH | instantaneous minimum | report only (SU) | all year | 012 |
| pH | instantaneous maximum | report only (SU) | all year | 012 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 012 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 012 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | 012 |
| Oil and grease, hexane extr method | daily maximum | report only (mg/L) | all year | 012 |
| Carbon, tot organic [TOC] | monthly average | report only (mg/L) | all year | 012 |
| Carbon, tot organic [TOC] | daily maximum | report only (mg/L) | all year | 012 |
| Cyanide, free [amenable to chlorination] | monthly average | report only (mg/L) | all year | 012 |
| Cyanide, free [amenable to chlorination] | daily maximum | report only (mg/L) | all year | 012 |
| Iron, total [as Fe] | monthly average | report only (mg/L) | all year | 012 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year | 012 |
| Zinc, total [as Zn] | monthly average | report only (mg/L) | all year | 012 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | 012 |
| Aluminum, total [as Al] | monthly average | report only (mg/L) | all year | 012 |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | all year | 012 |
| Benzene | monthly average | report only (ug/L) | all year | 012 |
| Benzene | daily maximum | report only (ug/L) | all year | 012 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 012 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 012 |
| Mercury, total [as Hg] | monthly average | report only (ug/L) | all year | 012 |
| Mercury, total [as Hg] | daily maximum | report only (ug/L) | all year | 012 |
| Chemical Oxygen Demand [COD] | monthly average | report only (mg/L) | all year | 012 |
| Chemical Oxygen Demand [COD] | daily maximum | report only (mg/L) | all year | 012 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 014 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 014 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 014 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 014 |
| Carbon, tot organic [TOC] | monthly average | report only (mg/L) | all year | 014 |
| Carbon, tot organic [TOC] | daily maximum | report only (mg/L) | all year | 014 |
| Chloride [as Cl] | monthly average | report only (mg/L) | all year | 014 |
| Chloride [as Cl] | daily maximum | ≤ 2048 mg/L | all year | 014 |
| Iron, total recoverable | monthly average | report only (mg/L) | all year | 014 |
| Iron, total recoverable | daily maximum | report only (mg/L) | all year | 014 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 014 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 014 |
| Chlorine, total residual | monthly average | report only (mg/L) | all year | 014 |
| Chlorine, total residual | daily maximum | ≤ .057 mg/L | all year | 014 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 015 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 015 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 015 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 015 |
| Carbon, tot organic [TOC] | monthly average | report only (mg/L) | all year | 015 |
| Carbon, tot organic [TOC] | daily maximum | report only (mg/L) | all year | 015 |
| Chloride [as Cl] | monthly average | report only (mg/L) | all year | 015 |
| Chloride [as Cl] | daily maximum | ≤ 2048 mg/L | all year | 015 |
| Iron, total recoverable | monthly average | report only (mg/L) | all year | 015 |
| Iron, total recoverable | daily maximum | report only (mg/L) | all year | 015 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 015 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 015 |
| Chlorine, total residual | monthly average | report only (mg/L) | all year | 015 |
| Chlorine, total residual | daily maximum | ≤ .057 mg/L | all year | 015 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 016 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 016 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 016 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 016 |
| Carbon, tot organic [TOC] | monthly average | report only (mg/L) | all year | 016 |
| Carbon, tot organic [TOC] | daily maximum | report only (mg/L) | all year | 016 |
| Chloride [as Cl] | monthly average | report only (mg/L) | all year | 016 |
| Chloride [as Cl] | daily maximum | ≤ 2048 mg/L | all year | 016 |
| Iron, total recoverable | monthly average | report only (mg/L) | all year | 016 |
| Iron, total recoverable | daily maximum | report only (mg/L) | all year | 016 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 016 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 016 |
| Chlorine, total residual | monthly average | report only (mg/L) | all year | 016 |
| Chlorine, total residual | daily maximum | ≤ .057 mg/L | all year | 016 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 017 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 017 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 017 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 017 |
| Carbon, tot organic [TOC] | monthly average | report only (mg/L) | all year | 017 |
| Carbon, tot organic [TOC] | daily maximum | report only (mg/L) | all year | 017 |
| Chloride [as Cl] | monthly average | report only (mg/L) | all year | 017 |
| Chloride [as Cl] | daily maximum | ≤ 2048 mg/L | all year | 017 |
| Iron, total recoverable | monthly average | report only (mg/L) | all year | 017 |
| Iron, total recoverable | daily maximum | report only (mg/L) | all year | 017 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 017 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 017 |
| Chlorine, total residual | monthly average | report only (mg/L) | all year | 017 |
| Chlorine, total residual | daily maximum | ≤ .057 mg/L | all year | 017 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 018 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 018 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 018 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 018 |
| Carbon, tot organic [TOC] | monthly average | report only (mg/L) | all year | 018 |
| Carbon, tot organic [TOC] | daily maximum | report only (mg/L) | all year | 018 |
| Chloride [as Cl] | monthly average | report only (mg/L) | all year | 018 |
| Chloride [as Cl] | daily maximum | ≤ 2048 mg/L | all year | 018 |
| Iron, total recoverable | monthly average | report only (mg/L) | all year | 018 |
| Iron, total recoverable | daily maximum | report only (mg/L) | all year | 018 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 018 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 018 |
| Chlorine, total residual | monthly average | report only (mg/L) | all year | 018 |
| Chlorine, total residual | daily maximum | ≤ .057 mg/L | all year | 018 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 101 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 101 |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) | all year | 101 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (lb/d) | all year | 101 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 101 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 101 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | 101 |
| Solids, total suspended | daily maximum | report only (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 |
| Chemical Oxygen Demand [COD] | monthly average | report only (mg/L) | all year | 101 |
| Chemical Oxygen Demand [COD] | daily maximum | report only (mg/L) | all year | 101 |
| Chemical Oxygen Demand [COD] | monthly average | report only (lb/d) | all year | 101 |
| Chemical Oxygen Demand [COD] | daily maximum | report only (lb/d) | all year | 101 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 201 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 201 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year | 208 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 60 mg/L | all year | 208 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 12 lb/d | all year | 208 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 24 lb/d | all year | 208 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 208 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 208 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 208 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 208 |
| Solids, total suspended | monthly average | ≤ 12 lb/d | all year | 208 |
| Solids, total suspended | daily maximum | ≤ 24 lb/d | all year | 208 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | ≤ 18 mg/L | all year | 208 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | ≤ 36 mg/L | all year | 208 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | ≤ 7 lb/d | all year | 208 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | ≤ 14 lb/d | all year | 208 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 208 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ .049 MGD | all year | 208 |
| Coliform, fecal general | monthly geometric mean | ≤ 200 #/100mL | all year | 208 |
| Coliform, fecal general | daily maximum | ≤ 400 #/100mL | all year | 208 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 301 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 301 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 401 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 401 |
| Parameter | New limit | New or tighter | Median, last 12 months | × new limit |
|---|---|---|---|---|
| Cyanide, free [amenable to chlorination], daily maximum | 0.006 mg/L | new | — | — |
| Cyanide, free [amenable to chlorination], monthly average | 0.004 mg/L | new | — | — |
| Lead, total recoverable, daily maximum | 0.0052 mg/L | new | — | — |
| Lead, total recoverable, monthly average | 0.0026 mg/L | new | — | — |
Cited limits by parameter: West Virginia's rules and the federal ones.
Same industry: the 28 Chemicals and Allied Products permits in West Virginia.
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