Clean Water Act discharge permit · NPDES MSP092068
OLIN WINCHESTER LLC, Oxford, MS: NPDES MSP092068 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 10Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
OLIN WINCHESTER LLC, held by OLIN WINCHESTER LLC, holds NPDES permit MSP092068, which discharges to Ms0029017 - Oxford Potw. EPA’s file records it issued January 7, 2019 and expiring December 31, 2023. 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 | OLIN WINCHESTER LLC |
|---|---|
| Permittee as filed | OLIN WINCHESTER LLC |
| NPDES ID | MSP092068 |
| Permit status | Effective |
| Permit type | Individual industrial user permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | January 7, 2019 |
| Expiration date | December 31, 2023 |
| Issuing agency | MDEQ |
| Address | Oxford, MS 38655 |
| Receiving water | MS0029017 - OXFORD POTW |
| NAICS | 332992 – Small Arms Ammunition Manufacturing |
| SIC | 3482 – Small Arms Ammunition |
| Other EPA IDs (FRS) | RCRA handler MSD053796736; ICIS-AIR source MS0000002807100029 |
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
- 10Pollutants on file
- 10Under a numeric limit
- 10With a violation of any kind
- 1With 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 |
|---|---|---|---|---|---|
| Lead, total recoverable | 4 | 6 | 2 | July 31, 2005 | 74% over the limit |
| Silver total recoverable | 4 | 8 | 0 | ||
| Cadmium, total recoverable | 4 | 8 | 0 | ||
| Chromium, total recoverable | 4 | 8 | 0 | ||
| Nickel, total recoverable | 4 | 4 | 0 | ||
| Zinc, total recoverable | 4 | 4 | 0 | ||
| Copper, total recoverable | 4 | 4 | 0 | ||
| Cyanide, total recoverable | 4 | 4 | 0 | ||
| pH | 2 | 2 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 2 | 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 MSP092068.
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, MSP092068.
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 MSP092068 there.
Nearby on the register
- Discharge permits in Oxford
- Every permit record in Oxford, A to Z
- Discharge permits in Mississippi
- Every permit record in Mississippi, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.