Clean Water Act discharge permit · NPDES WV0000078
UNION CARBIDE CORPORATION, SOUTH CHARLESTON FACILITY, South Charleston, WV: NPDES WV0000078 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 13Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
UNION CARBIDE CORPORATION, SOUTH CHARLESTON FACILITY, held by UNION CARBIDE CORPORATION, holds NPDES permit WV0000078, which discharges to Kanawha River. EPA’s file records it issued June 14, 1984 and expiring June 30, 2017. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | UNION CARBIDE CORPORATION, SOUTH CHARLESTON FACILITY |
|---|---|
| Permittee as filed | UNION CARBIDE CORPORATION |
| NPDES ID | WV0000078 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | June 14, 1984 |
| Expiration date | June 30, 2017 |
| Address | South Charleston, WV 25303 |
| Receiving water | KANAWHA RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Tyler Creek-Kanawha River (HUC 050500080303) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 15Pollutants on file
- 13Under a numeric limit
- 10With a violation of any kind
- 6With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Temperature, water deg. fahrenheit | 64 | 43 | 19 | May 31, 2020 | 300% over the limit |
| Coliform, fecal general | 0 | 7 | 7 | October 31, 2025 | 1,110% over the limit |
| Chlorine, total residual | 20 | 16 | 4 | April 30, 2017 | 686% over the limit |
| Temp. diff. between samp. & upstrm deg. F | 0 | 13 | 3 | July 31, 2026 | 438% over the limit |
| Iron, total recoverable | 50 | 2 | 2 | March 31, 2024 | 25% over the limit |
| Carbon, tot organic [TOC] | 85 | 1 | 1 | September 30, 2011 | 7% over the limit |
| pH | 80 | 2 | 0 | ||
| Flow, in conduit or thru treatment plant | 83 | 1 | 0 | ||
| Solids, total suspended | 62 | 1 | 0 | ||
| Oil and grease, hexane extr method | 50 | 1 | 0 | ||
| Nitrite + Nitrate total [as N] | 50 | 0 | 0 | ||
| Nitrogen, ammonia total [as N] | 14 | 0 | 0 | ||
| BOD, 5-day, 20 deg. C | 10 | 0 | 0 | ||
| Organics, total toxic [TTO] | 10 | 0 | 0 | ||
| Chemical Oxygen Demand [COD] | 10 | 0 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 6Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| September 18, 2025 | Management Practice Violations - Violation of a milestone in an order | ST6 |
| September 18, 2025 | Management Practice Violations - Best Management Practice Deficiencies | ST6 |
| July 27, 2023 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| July 27, 2023 | Effluent Violations - Narrative Effluent Violation | ST6 |
| July 27, 2023 | Management Practice Violations - Violation of a milestone in an order | ST6 |
| May 4, 2021 | Monitoring Violations - Analysis not Conducted | ST6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
Watch this permit
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID WV0000078 there.
Nearby on the register
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- Every permit record in South Charleston, A to Z
- Discharge permits in West Virginia
- Every permit record in West Virginia, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.