Clean Water Act discharge permit · NPDES OHGH00920
OH26-204 TCO E.039972 TCO LINE 20 PROJECT, Louisville, OH: NPDES OHGH00920 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 7Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
OH26-204 TCO E.039972 TCO LINE 20 PROJECT, held by TC Energy - Columbia Gas Transmission, holds NPDES permit OHGH00920. EPA’s file records it issued July 24, 2026 and expiring January 31, 2028. 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.
What the register holds for OH26-204 TCO E.039972 TCO LINE 20 PROJECT: its NPDES ID, its permit type and status, its dates, its address in Louisville, Ohio, and 7 pollutants under a numeric limit. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES OHGH00920.
Identity
| Facility as filed | OH26-204 TCO E.039972 TCO LINE 20 PROJECT |
|---|---|
| Permittee as filed | TC Energy - Columbia Gas Transmission |
| NPDES ID | OHGH00920 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | July 24, 2026 |
| Expiration date | January 31, 2028 |
| Address | Louisville, OH 44634 |
| Subwatershed | Hugle Run (HUC 050400010601) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 7Pollutants on file
- 7Under a numeric limit
- 0With a violation of any kind
- 0With 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 |
|---|---|---|---|---|---|
| Flow rate | 2 | 0 | 0 | ||
| pH | 2 | 0 | 0 | ||
| Solids, total suspended | 2 | 0 | 0 | ||
| Iron, total recoverable | 2 | 0 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 0 | 0 | ||
| Oil and grease, hexane extr method | 1 | 0 | 0 | ||
| Chlorine, total residual | 1 | 0 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES OHGH00920.
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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES OHGH00920.
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
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, OHGH00920.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
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 OHGH00920 there.
Nearby on the register
- Discharge permits in Louisville
- Every permit record in Louisville, A to Z
- Discharge permits in Ohio
- Every permit record in Ohio, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.