Clean Water Act discharge permit · NPDES MSP091250
ZEON CHEMICALS LP, Hattiesburg, MS: NPDES MSP091250 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 5Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
ZEON CHEMICALS LP holds NPDES permit MSP091250, which discharges to Ms0020303 - Hattiesburg South Potw. EPA’s file records it issued June 15, 2020 and expiring May 31, 2025. 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 | ZEON CHEMICALS LP |
|---|---|
| Permittee as filed | ZEON CHEMICALS LP |
| NPDES ID | MSP091250 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual industrial user permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | June 15, 2020 |
| Expiration date | May 31, 2025 |
| Issuing agency | MDEQ |
| Address | Hattiesburg, MS 39401 |
| Receiving water | MS0020303 - HATTIESBURG SOUTH POTW |
| NAICS | 325212 – Synthetic Rubber Manufacturing |
| SIC | 2822 – Synthetic Rubber |
| Other EPA IDs (FRS) | RCRA handler MSD982106700; ICIS-AIR source MS0000002803500006 |
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
- 5Pollutants on file
- 5Under a numeric limit
- 5With a violation of any kind
- 2With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 4 | 12 | 4 | January 31, 2011 | 30% over the limit |
| pH | 2 | 7 | 1 | December 31, 2005 | |
| BOD, 5-day, 20 deg. C | 4 | 8 | 0 | ||
| Chemical Oxygen Demand [COD] | 4 | 8 | 0 | ||
| Flow, in conduit or thru treatment plant | 1 | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| December 1, 2024 | Monitoring Violations - Frequency of Sampling Violation | 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 MSP091250 there.
Nearby on the register
- Discharge permits in Hattiesburg
- Every permit record in Hattiesburg, 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.