Clean Water Act discharge permit · NPDES MS0002232
TRONOX LLC, HAMILTON FACILITY, Hamilton, MS: NPDES MS0002232 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 15Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
TRONOX LLC, HAMILTON FACILITY holds NPDES permit MS0002232, which discharges to Tenn-Tom Waterway And Dose Maie. EPA’s file records it issued December 7, 2016 and expiring November 30, 2021. 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 | TRONOX LLC, HAMILTON FACILITY |
|---|---|
| Permittee as filed | TRONOX LLC, HAMILTON FACILITY |
| NPDES ID | MS0002232 |
| 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 | December 7, 2016 |
| Expiration date | November 30, 2021 |
| Issuing agency | MDEQ |
| Address | Hamilton, MS 39746 |
| Receiving water | TENN-TOM WATERWAY AND DOSE MAIE |
| Subwatershed | Wilson Creek-McKinley Creek (HUC 031601011403) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 15Pollutants on file
- 15Under a numeric limit
- 13With a violation of any kind
- 5With 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 |
|---|---|---|---|---|---|
| pH | 4 | 25 | 5 | August 31, 2014 | |
| Coliform, fecal general | 2 | 5 | 5 | December 31, 2013 | 1,875% over the limit |
| Iron, total [as Fe] | 12 | 14 | 2 | April 30, 2020 | 8% over the limit |
| pH range excursions, monthly total accum | 2 | 15 | 1 | May 31, 2011 | 19% over the limit |
| Solids, total suspended | 4 | 14 | 1 | September 30, 2008 | 13% over the limit |
| Chromium, total [as Cr] | 8 | 24 | 0 | ||
| Manganese, total [as Mn] | 8 | 24 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 18 | 0 | ||
| Titanium, total [as Ti] | 8 | 12 | 0 | ||
| pH range excursions, > 60 minutes | 2 | 9 | 0 | ||
| Temperature, water deg. fahrenheit | 1 | 6 | 0 | ||
| Antimony, total [as Sb] | 4 | 4 | 0 | ||
| Chlorine, total residual | 4 | 4 | 0 | ||
| Aluminum, total [as Al] | 4 | 0 | 0 | ||
| Temperature, summer [deg. F] | 1 | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| March 5, 2025 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
| March 1, 2018 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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, MS0002232.
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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 MS0002232 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 September 15, 2026.