Clean Water Act discharge permit · NPDES MS0059994
STEEL DYNAMICS COLUMBUS LLC, Columbus, MS: NPDES MS0059994 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 17Pollutants under a numeric limit
- 11Pollutants with an effluent exceedance
STEEL DYNAMICS COLUMBUS LLC, held by STEEL DYNAMICS COLUMBUS, holds NPDES permit MS0059994, which discharges to Gilmer Creek. EPA’s file records it issued April 13, 2017 and expiring March 31, 2022. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | STEEL DYNAMICS COLUMBUS LLC |
|---|---|
| Permittee as filed | STEEL DYNAMICS COLUMBUS |
| NPDES ID | MS0059994 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | April 13, 2017 |
| Expiration date | March 31, 2022 |
| Issuing agency | MDEQ |
| Address | Columbus, MS 39701 |
| Receiving water | GILMER CREEK |
| Subwatershed | Motley Slu-Gilmer Creek (HUC 031601060101) |
| NAICS | 331111 – Iron and Steel Mills [2007] |
| SIC | 3312 – Blast Furnaces And Steel Mills |
| Other EPA IDs (FRS) | RCRA handler MSR000103143; ICIS-AIR source MS0000002808700064 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 19Pollutants on file
- 17Under a numeric limit
- 16With a violation of any kind
- 11With 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 |
|---|---|---|---|---|---|
| Iron, total recoverable | 12 | 58 | 54 | April 30, 2021 | 23,418% over the limit |
| Solids, total suspended | 16 | 27 | 23 | October 31, 2009 | 516% over the limit |
| Oil & Grease | 16 | 17 | 13 | March 31, 2021 | 2,403% over the limit |
| Copper, total recoverable | 8 | 16 | 12 | October 31, 2020 | 101% over the limit |
| Cyanide, total recoverable | 8 | 10 | 6 | August 31, 2021 | 127% over the limit |
| Flow, in conduit or thru treatment plant | 10 | 8 | 4 | August 31, 2008 | 47% over the limit |
| BOD, 5-day, 20 deg. C | 4 | 3 | 3 | July 31, 2010 | 345% over the limit |
| Lead, total recoverable | 16 | 6 | 2 | December 31, 2013 | 490% over the limit |
| Oxygen, dissolved [DO] | 4 | 2 | 2 | May 31, 2011 | 15% over the limit |
| Nitrogen, ammonia total [as N] | 4 | 2 | 2 | September 30, 2007 | 463% over the limit |
| Chromium, hexavalent [as Cr] | 0 | 2 | 2 | October 31, 2008 | 150% over the limit |
| Tetrachloroethylene | 0 | 12 | 0 | ||
| Zinc, total recoverable | 16 | 4 | 0 | ||
| Chromium, total recoverable | 12 | 4 | 0 | ||
| Naphthalene | 12 | 4 | 0 | ||
| pH | 10 | 4 | 0 | ||
| Tetrachloroethylene | 16 | 0 | 0 | ||
| Nickel, total recoverable | 4 | 0 | 0 | ||
| Temperature, water deg. fahrenheit | 2 | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MS0059994.
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.
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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 MS0059994 there.
Nearby on the register
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- Every permit record in Mississippi, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.