UNION CARBIDE CORPORATION

NPDES permit WV0000078 · Major NON-POTW · administratively continued, expires 2025-08-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

This permit expired on 2025-08-31 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

EPA's record, 2025-09-01 to 2026-08-31

3values over a limit
0required values missing, on 0 form(s)
0of 238 forms filed late

Last period with anything received: 2026-07-31. Most often over: Coliform, fecal general (2), Temp. diff. between samp. & upstrm deg. F (1).

Reporting

Reports are due about 25 days after each monitoring period ends (the most common figure among WV permits in EPA's filings — check your permit).

Limits in force (362)

OutfallParameterStatisticLimitMonths
012pHINST MIN report only all year
012pHINST MAX report only all year
012Solids, total suspendedMO AVG report only all year
012Solids, total suspendedDAILY MX report only all year
012Oil and grease, hexane extr methodMO AVG report only all year
012Oil and grease, hexane extr methodDAILY MX report only all year
012Nitrite + Nitrate total [as N]MO AVG report only all year
012Nitrite + Nitrate total [as N]DAILY MX report only all year
012Iron, total recoverableMO AVG report only all year
012Iron, total recoverableMO AVG report only all year
012Iron, total recoverableDAILY MX <= 1.5 mg/L all year
012Iron, total recoverableDAILY MX <= 11.4 mg/L all year
012Flow, in conduit or thru treatment plantMO AVG report only all year
012Flow, in conduit or thru treatment plantDAILY MX report only all year
014Temperature, water deg. fahrenheitMO AVG report only all year
014Temperature, water deg. fahrenheitDAILY MX report only all year
014Temperature, water deg. fahrenheitMO AVG report only all year
014Temperature, water deg. fahrenheitDAILY MX report only all year
014Temp. diff. between samp. & upstrm deg. FMO AVG report only all year
014Temp. diff. between samp. & upstrm deg. FDAILY MX <= 15 deg F all year
014pHINST MIN >= 6 SU all year
014pHINST MAX <= 9 SU all year
014Solids, total suspendedMO AVG report only all year
014Solids, total suspendedDAILY MX report only all year
014Carbon, tot organic [TOC]MO AVG report only all year
014Carbon, tot organic [TOC]DAILY MX report only all year
014Carbon, tot organic [TOC]MO AVG report only all year
014Carbon, tot organic [TOC]DAILY MX report only all year
014Titanium, total recoverableMO AVG report only all year
014Titanium, total recoverableDAILY MX report only all year
014Flow, in conduit or thru treatment plantMO AVG report only all year
014Flow, in conduit or thru treatment plantDAILY MX report only all year
014Chlorine, total residualMO AVG <= 28 ug/L all year
014Chlorine, total residualDAILY MX <= 57 ug/L all year
015Temperature, water deg. fahrenheitMO AVG report only all year
015Temperature, water deg. fahrenheitDAILY MX report only all year
015Temperature, water deg. fahrenheitMO AVG report only all year
015Temperature, water deg. fahrenheitDAILY MX report only all year
015Temp. diff. between samp. & upstrm deg. FMO AVG report only all year
015Temp. diff. between samp. & upstrm deg. FDAILY MX <= 15 deg F all year
015pHINST MIN >= 6 SU all year
015pHINST MAX <= 9 SU all year
015Solids, total suspendedMO AVG report only all year
015Solids, total suspendedDAILY MX report only all year
015Oil and grease, hexane extr methodMO AVG report only all year
015Oil and grease, hexane extr methodDAILY MX report only all year
015Carbon, tot organic [TOC]MO AVG report only all year
015Carbon, tot organic [TOC]DAILY MX report only all year
015Carbon, tot organic [TOC]MO AVG report only all year
015Carbon, tot organic [TOC]DAILY MX report only all year
015Titanium, total recoverableMO AVG report only all year
015Titanium, total recoverableDAILY MX report only all year
015Flow, in conduit or thru treatment plantMO AVG report only all year
015Flow, in conduit or thru treatment plantDAILY MX report only all year
015Chlorine, total residualMO AVG <= 28 ug/L all year
015Chlorine, total residualDAILY MX <= 57 ug/L all year
017Temperature, water deg. fahrenheitMO AVG report only all year
017Temperature, water deg. fahrenheitDAILY MX report only all year
017Temperature, water deg. fahrenheitMO AVG report only all year
017Temperature, water deg. fahrenheitDAILY MX report only all year
017Temp. diff. between samp. & upstrm deg. FMO AVG report only all year
017Temp. diff. between samp. & upstrm deg. FDAILY MX <= 15 deg F all year
017pHINST MIN >= 6 SU all year
017pHINST MAX <= 9 SU all year
017Solids, total suspendedMO AVG report only all year
017Solids, total suspendedDAILY MX report only all year
017Carbon, tot organic [TOC]MO AVG report only all year
017Carbon, tot organic [TOC]DAILY MX report only all year
017Carbon, tot organic [TOC]MO AVG report only all year
017Carbon, tot organic [TOC]DAILY MX report only all year
017Titanium, total recoverableMO AVG report only all year
017Titanium, total recoverableDAILY MX report only all year
017Aluminum, total recoverableMO AVG report only all year
017Aluminum, total recoverableDAILY MX report only all year
017Flow, in conduit or thru treatment plantMO AVG report only all year
017Flow, in conduit or thru treatment plantDAILY MX report only all year
017Chlorine, total residualMO AVG <= 28 ug/L all year
017Chlorine, total residualDAILY MX <= 57 ug/L all year
017Coliform, fecal generalMO GEOMN report only all year
017Coliform, fecal generalDAILY MX report only all year
023Temperature, water deg. fahrenheitMO AVG report only all year
023Temperature, water deg. fahrenheitDAILY MX report only all year
023Temperature, water deg. fahrenheitMO AVG report only all year
023Temperature, water deg. fahrenheitDAILY MX report only all year
023Temp. diff. between samp. & upstrm deg. FMO AVG report only all year
023Temp. diff. between samp. & upstrm deg. FDAILY MX <= 15 deg F all year
023pHINST MIN >= 6 SU all year
023pHINST MAX <= 9 SU all year
023Solids, total suspendedMO AVG report only all year
023Solids, total suspendedDAILY MX report only all year
023Carbon, tot organic [TOC]MO AVG report only all year
023Carbon, tot organic [TOC]DAILY MX report only all year
023Carbon, tot organic [TOC]MO AVG report only all year
023Carbon, tot organic [TOC]DAILY MX report only all year
023Titanium, total recoverableMO AVG report only all year
023Titanium, total recoverableDAILY MX report only all year
023Flow, in conduit or thru treatment plantMO AVG report only all year
023Flow, in conduit or thru treatment plantDAILY MX report only all year
023Chlorine, total residualMO AVG <= 28 ug/L all year
023Chlorine, total residualDAILY MX <= 57 ug/L all year
023Coliform, fecal generalMO GEOMN <= 200 #/100mL all year
023Coliform, fecal generalDAILY MX <= 400 #/100mL all year
025pHINST MIN report only all year
025pHINST MAX report only all year
025Solids, total suspendedMO AVG report only all year
025Solids, total suspendedDAILY MX report only all year
025Iron, total recoverableMO AVG report only all year
025Iron, total recoverableDAILY MX report only all year
025Flow, in conduit or thru treatment plantMO AVG report only all year
025Flow, in conduit or thru treatment plantDAILY MX report only all year
049pHINST MIN report only all year
049pHINST MAX report only all year
049Solids, total suspendedMO AVG report only all year
049Solids, total suspendedDAILY MX report only all year
049Oil and grease, hexane extr methodMO AVG report only all year
049Oil and grease, hexane extr methodDAILY MX report only all year
049Nitrogen, ammonia total [as N]MO AVG report only all year
049Nitrogen, ammonia total [as N]DAILY MX report only all year
049Nitrite + Nitrate total [as N]MO AVG report only all year
049Nitrite + Nitrate total [as N]DAILY MX report only all year
049Iron, total recoverableMO AVG report only all year
049Iron, total recoverableMO AVG report only all year
049Iron, total recoverableDAILY MX <= 1.5 mg/L all year
049Iron, total recoverableDAILY MX <= 11.4 mg/L all year
049Flow, in conduit or thru treatment plantMO AVG report only all year
049Flow, in conduit or thru treatment plantDAILY MX report only all year
050pHINST MIN report only all year
050pHINST MAX report only all year
050Solids, total suspendedMO AVG report only all year
050Solids, total suspendedDAILY MX report only all year
050Oil and grease, hexane extr methodMO AVG report only all year
050Oil and grease, hexane extr methodDAILY MX report only all year
050Nitrite + Nitrate total [as N]MO AVG report only all year
050Nitrite + Nitrate total [as N]DAILY MX report only all year
050Iron, total recoverableMO AVG report only all year
050Iron, total recoverableMO AVG report only all year
050Iron, total recoverableDAILY MX <= 1.5 mg/L all year
050Iron, total recoverableDAILY MX <= 11.4 mg/L all year
0502,4-DinitrophenolMO AVG report only all year
0502,4-DinitrophenolDAILY MX report only all year
050Flow, in conduit or thru treatment plantMO AVG report only all year
050Flow, in conduit or thru treatment plantDAILY MX report only all year
050Chemical Oxygen Demand [COD]MO AVG report only all year
050Chemical Oxygen Demand [COD]DAILY MX report only all year
052pHINST MIN report only all year
052pHINST MAX report only all year
052Solids, total suspendedMO AVG report only all year
052Solids, total suspendedDAILY MX report only all year
052Oil and grease, hexane extr methodMO AVG report only all year
052Oil and grease, hexane extr methodDAILY MX report only all year
052Nitrite + Nitrate total [as N]MO AVG report only all year
052Nitrite + Nitrate total [as N]DAILY MX report only all year
052Iron, total recoverableMO AVG report only all year
052Iron, total recoverableMO AVG report only all year
052Iron, total recoverableDAILY MX <= 1.5 mg/L all year
052Iron, total recoverableDAILY MX <= 11.4 mg/L all year
0524-NitrophenolMO AVG report only all year
0524-NitrophenolDAILY MX report only all year
052Flow, in conduit or thru treatment plantMO AVG report only all year
052Flow, in conduit or thru treatment plantDAILY MX report only all year
052Chemical Oxygen Demand [COD]MO AVG report only all year
052Chemical Oxygen Demand [COD]DAILY MX report only all year
057pHINST MIN report only all year
057pHINST MAX report only all year
057Solids, total suspendedMO AVG report only all year
057Solids, total suspendedDAILY MX report only all year
057Oil and grease, hexane extr methodMO AVG report only all year
057Oil and grease, hexane extr methodDAILY MX report only all year
057Nitrite + Nitrate total [as N]MO AVG report only all year
057Nitrite + Nitrate total [as N]DAILY MX report only all year
057Iron, total recoverableMO AVG report only all year
057Iron, total recoverableMO AVG report only all year
057Iron, total recoverableDAILY MX <= 1.5 mg/L all year
057Iron, total recoverableDAILY MX <= 11.4 mg/L all year
057Flow, in conduit or thru treatment plantMO AVG report only all year
057Flow, in conduit or thru treatment plantDAILY MX report only all year
061pHINST MIN report only all year
061pHINST MAX report only all year
061Solids, total suspendedMO AVG report only all year
061Solids, total suspendedDAILY MX report only all year
061Oil and grease, hexane extr methodMO AVG report only all year
061Oil and grease, hexane extr methodDAILY MX report only all year
061Nitrite + Nitrate total [as N]MO AVG report only all year
061Nitrite + Nitrate total [as N]DAILY MX report only all year
061Iron, total recoverableMO AVG report only all year
061Iron, total recoverableMO AVG report only all year
061Iron, total recoverableDAILY MX <= 1.5 mg/L all year
061Iron, total recoverableDAILY MX <= 11.4 mg/L all year
061Flow, in conduit or thru treatment plantMO AVG report only all year
061Flow, in conduit or thru treatment plantDAILY MX report only all year
062pHINST MIN report only all year
062pHINST MAX report only all year
062Carbon, tot organic [TOC]MO AVG report only all year
062Carbon, tot organic [TOC]DAILY MX report only all year
062Flow, in conduit or thru treatment plantMO AVG report only all year
062Flow, in conduit or thru treatment plantDAILY MX report only all year
063pHINST MIN report only all year
063pHINST MAX report only all year
063Solids, total suspendedMO AVG report only all year
063Solids, total suspendedDAILY MX report only all year
063Oil and grease, hexane extr methodMO AVG report only all year
063Oil and grease, hexane extr methodDAILY MX report only all year
063Nitrite + Nitrate total [as N]MO AVG report only all year
063Nitrite + Nitrate total [as N]DAILY MX report only all year
063Iron, total recoverableMO AVG report only all year
063Iron, total recoverableMO AVG report only all year
063Iron, total recoverableDAILY MX <= 1.5 mg/L all year
063Iron, total recoverableDAILY MX <= 11.4 mg/L all year
063Endosulfan sulfateMO AVG report only all year
063Endosulfan sulfateDAILY MX report only all year
063Flow, in conduit or thru treatment plantMO AVG report only all year
063Flow, in conduit or thru treatment plantDAILY MX report only all year
063Chemical Oxygen Demand [COD]MO AVG report only all year
063Chemical Oxygen Demand [COD]DAILY MX report only all year
071pHINST MIN report only all year
071pHINST MAX report only all year
071Solids, total suspendedMO AVG report only all year
071Solids, total suspendedDAILY MX report only all year
071Oil and grease, hexane extr methodMO AVG report only all year
071Oil and grease, hexane extr methodDAILY MX report only all year
071Nitrite + Nitrate total [as N]MO AVG report only all year
071Nitrite + Nitrate total [as N]DAILY MX report only all year
071Iron, total recoverableMO AVG report only all year
071Iron, total recoverableDAILY MX report only all year
071Flow, in conduit or thru treatment plantMO AVG report only all year
071Flow, in conduit or thru treatment plantDAILY MX report only all year
074pHINST MIN report only all year
074pHINST MAX report only all year
074Solids, total suspendedMO AVG report only all year
074Solids, total suspendedDAILY MX report only all year
074Oil and grease, hexane extr methodMO AVG report only all year
074Oil and grease, hexane extr methodDAILY MX report only all year
074Nitrite + Nitrate total [as N]MO AVG report only all year
074Nitrite + Nitrate total [as N]DAILY MX report only all year
074Iron, total recoverableMO AVG report only all year
074Iron, total recoverableMO AVG report only all year
074Iron, total recoverableDAILY MX <= 1.5 mg/L all year
074Iron, total recoverableDAILY MX <= 11.4 mg/L all year
074Flow, in conduit or thru treatment plantMO AVG report only all year
074Flow, in conduit or thru treatment plantDAILY MX report only all year
076Temperature, water deg. fahrenheitMO AVG report only all year
076Temperature, water deg. fahrenheitDAILY MX report only all year
076Temperature, water deg. fahrenheitMO AVG report only all year
076Temperature, water deg. fahrenheitDAILY MX report only all year
076Temp. diff. between samp. & upstrm deg. FMO AVG report only all year
076Temp. diff. between samp. & upstrm deg. FDAILY MX report only all year
076pHINST MIN >= 6 SU all year
076pHINST MAX <= 9 SU all year
076Solids, total suspendedMO AVG report only all year
076Solids, total suspendedDAILY MX report only all year
076Carbon, tot organic [TOC]MO AVG report only all year
076Carbon, tot organic [TOC]DAILY MX report only all year
076Carbon, tot organic [TOC]MO AVG report only all year
076Carbon, tot organic [TOC]DAILY MX report only all year
076Titanium, total recoverableMO AVG report only all year
076Titanium, total recoverableDAILY MX report only all year
076Copper, total recoverableMO AVG report only all year
076Copper, total recoverableDAILY MX report only all year
076Flow, in conduit or thru treatment plantMO AVG report only all year
076Chlorine, total residualMO AVG <= 28 ug/L all year
076Chlorine, total residualDAILY MX <= 57 ug/L all year
076Coliform, fecal generalMO GEOMN report only all year
076Coliform, fecal generalDAILY MX report only all year
079pHINST MIN report only all year
079pHINST MAX report only all year
079Solids, total suspendedMO AVG report only all year
079Solids, total suspendedDAILY MX report only all year
079Oil and grease, hexane extr methodMO AVG report only all year
079Oil and grease, hexane extr methodDAILY MX report only all year
079Nitrite + Nitrate total [as N]MO AVG report only all year
079Nitrite + Nitrate total [as N]DAILY MX report only all year
079Iron, total recoverableMO AVG report only all year
079Iron, total recoverableMO AVG report only all year
079Iron, total recoverableDAILY MX <= 1.5 mg/L all year
079Iron, total recoverableDAILY MX <= 11.4 mg/L all year
079Flow, in conduit or thru treatment plantMO AVG report only all year
079Flow, in conduit or thru treatment plantDAILY MX report only all year
081pHINST MIN report only all year
081pHINST MAX report only all year
081Solids, total suspendedMO AVG report only all year
081Solids, total suspendedDAILY MX report only all year
081Oil and grease, hexane extr methodMO AVG report only all year
081Oil and grease, hexane extr methodDAILY MX report only all year
081Nitrite + Nitrate total [as N]MO AVG report only all year
081Nitrite + Nitrate total [as N]DAILY MX report only all year
081Iron, total recoverableMO AVG report only all year
081Iron, total recoverableMO AVG report only all year
081Iron, total recoverableDAILY MX <= 1.5 mg/L all year
081Iron, total recoverableDAILY MX <= 11.4 mg/L all year
081Flow, in conduit or thru treatment plantMO AVG report only all year
081Flow, in conduit or thru treatment plantDAILY MX report only all year
083pHINST MIN report only all year
083pHINST MAX report only all year
083Carbon, tot organic [TOC]MO AVG report only all year
083Carbon, tot organic [TOC]DAILY MX report only all year
083Flow, in conduit or thru treatment plantMO AVG report only all year
083Flow, in conduit or thru treatment plantDAILY MX report only all year
084pHINST MIN report only all year
084pHINST MAX report only all year
084Carbon, tot organic [TOC]MO AVG report only all year
084Carbon, tot organic [TOC]DAILY MX report only all year
084Flow, in conduit or thru treatment plantMO AVG report only all year
084Flow, in conduit or thru treatment plantDAILY MX report only all year
085pHINST MIN report only all year
085pHINST MAX report only all year
085Carbon, tot organic [TOC]MO AVG report only all year
085Carbon, tot organic [TOC]DAILY MX report only all year
085Flow, in conduit or thru treatment plantMO AVG report only all year
085Flow, in conduit or thru treatment plantDAILY MX report only all year
087pHINST MIN report only all year
087pHINST MAX report only all year
087Carbon, tot organic [TOC]MO AVG report only all year
087Carbon, tot organic [TOC]DAILY MX report only all year
087Flow, in conduit or thru treatment plantMO AVG report only all year
087Flow, in conduit or thru treatment plantDAILY MX report only all year
088pHINST MIN report only all year
088pHINST MAX report only all year
088Carbon, tot organic [TOC]MO AVG report only all year
088Carbon, tot organic [TOC]DAILY MX report only all year
088Flow, in conduit or thru treatment plantMO AVG report only all year
088Flow, in conduit or thru treatment plantDAILY MX report only all year
089pHINST MIN report only all year
089pHINST MAX report only all year
089Carbon, tot organic [TOC]MO AVG report only all year
089Carbon, tot organic [TOC]DAILY MX report only all year
089Flow, in conduit or thru treatment plantMO AVG report only all year
089Flow, in conduit or thru treatment plantDAILY MX report only all year
090pHINST MIN report only all year
090pHINST MAX report only all year
090Carbon, tot organic [TOC]MO AVG report only all year
090Carbon, tot organic [TOC]DAILY MX report only all year
090Flow, in conduit or thru treatment plantMO AVG report only all year
090Flow, in conduit or thru treatment plantDAILY MX report only all year
092pHINST MIN report only all year
092pHINST MAX report only all year
092Carbon, tot organic [TOC]DAILY MX report only all year
092Flow, in conduit or thru treatment plantMO AVG report only all year
092Flow, in conduit or thru treatment plantDAILY MX report only all year
093Carbon, tot organic [TOC]MO AVG <= 2365 lb/d all year
093Carbon, tot organic [TOC]DAILY MX <= 3291 lb/d all year
114Flow, in conduit or thru treatment plantMO AVG report only all year
114Flow, in conduit or thru treatment plantDAILY MX report only all year
115Flow, in conduit or thru treatment plantMO AVG report only all year
115Flow, in conduit or thru treatment plantDAILY MX report only all year
123Flow, in conduit or thru treatment plantMO AVG report only all year
123Flow, in conduit or thru treatment plantDAILY MX report only all year
INT1Carbon, tot organic [TOC]MO AVG report only all year
INT1Carbon, tot organic [TOC]DAILY MX report only all year
INT1Carbon, tot organic [TOC]MO AVG report only all year
INT1Carbon, tot organic [TOC]DAILY MX report only all year
INT1Flow, in conduit or thru treatment plantMO AVG report only all year
INT1Flow, in conduit or thru treatment plantDAILY MX report only all year
INT1Velocity of intakeMO AVG report only all year
INT1Velocity of intakeDAILY MX <= .5 ft/sec all year
INT2Carbon, tot organic [TOC]MO AVG report only all year
INT2Carbon, tot organic [TOC]DAILY MX report only all year
INT2Carbon, tot organic [TOC]MO AVG report only all year
INT2Carbon, tot organic [TOC]DAILY MX report only all year
INT2Flow, in conduit or thru treatment plantMO AVG report only all year
INT2Flow, in conduit or thru treatment plantDAILY MX report only all year
INT2Velocity of intakeMO AVG report only all year
INT2Velocity of intakeDAILY MX <= .5 ft/sec all year

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