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Clean Water Act discharge permit · NPDES TX0118737

EXXONMOBIL BEAUMONT REFINERY, Beaumont, TX: NPDES TX0118737 discharge permit, effluent exceedances, inspections, penalties

EXXONMOBIL BEAUMONT REFINERY, held by EXXONMOBIL OIL CORPORATION, holds NPDES permit TX0118737, which discharges to Unnamed Arm Of The Neches River Tid. EPA’s file records it issued December 5, 2006 and expiring August 1, 2011.

EXXONMOBIL BEAUMONT REFINERY, Beaumont, Texas: Individual permit TX0118737, held by EXXONMOBIL OIL CORPORATION; Administratively continued (past its expiration date and still in force until reissued); issued December 5, 2006, term to August 1, 2011; discharges to UNNAMED ARM OF THE NECHES RIVER TID.

  • Oil & Grease: 1 limit, 29 violations of any kind, 20 effluent exceedances, latest April 30, 2024, largest 3,720% over the limit.
  • pH: 2 limits, 21 violations of any kind, 11 effluent exceedances, latest July 31, 2024.
  • Phenolic compounds, total: 1 limit, 16 violations of any kind, 8 effluent exceedances, latest December 31, 2014, largest 475% over the limit.
  • BOD, 5-day, 20 deg. C: 1 limit, 14 violations of any kind, 7 effluent exceedances, latest November 30, 2015, largest 35% over the limit.
  • Flow, in conduit or thru treatment plant: 2 limits, 14 violations of any kind, 0 effluent exceedances.
  • Sulfide, total [as S]: 1 limit, 12 violations of any kind, 0 effluent exceedances.
  • LC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia): 1 limit, 9 violations of any kind, 0 effluent exceedances.
  • LC50 Pass/Fail Static 24Hr Acute Menidia menidia: 1 limit, 9 violations of any kind, 0 effluent exceedances.
  • Chromium, hexavalent [as Cr]: 1 limit, 8 violations of any kind, 0 effluent exceedances.
  • Chromium, total [as Cr]: 1 limit, 8 violations of any kind, 0 effluent exceedances.
  • Nitrogen, ammonia total [as N]: 1 limit, 7 violations of any kind, 0 effluent exceedances.
  • Benzene: 1 limit, 7 violations of any kind, 0 effluent exceedances.
  • Oxygen demand, chem. [high level] [COD]: 1 limit, 6 violations of any kind, 0 effluent exceedances.
  • Solids, total suspended: 1 limit, 6 violations of any kind, 0 effluent exceedances.
  • Enterococci: 1 limit, 5 violations of any kind, 0 effluent exceedances.
  • Whole effluent toxicity - retest #1: 1 limit, 0 violations of any kind, 0 effluent exceedances.
  • Whole effluent toxicity - retest #2: 1 limit, 0 violations of any kind, 0 effluent exceedances.
  • October 14, 2025: Permit Violations - Violation Specified in Comment (ST6).
  • May 29, 2024: Permit Violations - Violation Specified in Comment (ST6).
  • November 18, 2021: Permit Violations - Violation Specified in Comment (ST6).
  • June 5, 2018: Permit Violations - Violation Specified in Comment (ST6).

Other permits held by EXXONMOBIL OIL CORPORATION

EXXONMOBIL BEAUMONT REFINERY among its neighbors

EPA’s permit file holds 33 discharge permits in the Union Canal-Neches River subwatershed (HUC 120200030406), TX0118737 among them. Its county holds 302, 16 of them major permits; TX0118737 is a major permit.

Other permits in the Union Canal-Neches River subwatershed (HUC 120200030406)

  • AIR LIQUIDE NEDERLAND AIR SEPARATION UNIT, Nederland: TX0007277, minor permit, discharging to NECHES RIVER, permit term to August 1, 2021
  • ARKEMA BEAUMONT PLANT, Beaumont: TX0052825, minor permit, discharging to DIRECTLY OLD RIVER A PORTION OT NECHES RIVER TIDAL, permit term to August 1, 2021
  • ARKEMA BEAUMONT TEXAS FACILITY, Beaumont: TXR1505OR, minor permit, discharging to NECHES RIVER, permit term to March 4, 2028
  • AT&T DEMO, Beaumont: TXR1531PW, minor permit, discharging to NECHES RIVER, permit term to March 4, 2028
  • BEAUMONT GAS TO GASOLINE PLANT, Beaumont: TX0135836, minor permit, permit term to August 1, 2019
  • BEAUMONT MARINE EAST TERMINAL, Vidor Division: TX0144827, minor permit, discharging to Via a pipe directly to Neches River Tidal, permit term to August 9, 2029
  • BEAUMONT NECHES TERMINAL, Beaumont: TX0003662, minor permit, discharging to DRAINAGE DITCH; NECHES RIVER TIDAL, permit term to August 1, 2018
  • BEAUMONT TERMINAL, Nederland: TXG670623, minor permit, permit term to April 4, 2030
  • BEAUMONT TERMINAL, Beaumont: TXR05FE62, minor permit, permit term to August 13, 2026
  • CHEMTRADE REFINING SERVICES, Beaumont: TX0006726, minor permit, discharging to UNNAMED DITCH; UNNAMED MARSH, NECHE, permit term to August 1, 2021

Identity

Facility as filedEXXONMOBIL BEAUMONT REFINERY
Permittee as filedEXXONMOBIL OIL CORPORATION
NPDES IDTX0118737
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMajor discharger
Facility typeNot a publicly owned treatment works
IssuedDecember 5, 2006
Expiration dateAugust 1, 2011
AddressBeaumont, TX 77701
Receiving waterUNNAMED ARM OF THE NECHES RIVER TID
Receiving water impaired303(D) Listed
SubwatershedUnion Canal-Neches River (HUC 120200030406)
SIC2911 – Petroleum Refining

Effluent limits and exceedances

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 measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Oil & Grease12920April 30, 20243,720% over the limit
pH22111July 31, 2024
Phenolic compounds, total1168December 31, 2014475% over the limit
BOD, 5-day, 20 deg. C1147November 30, 201535% over the limit
Flow, in conduit or thru treatment plant2140
Sulfide, total [as S]1120
LC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia)190
LC50 Pass/Fail Static 24Hr Acute Menidia menidia190
Chromium, hexavalent [as Cr]180
Chromium, total [as Cr]180
Nitrogen, ammonia total [as N]170
Benzene170
Oxygen demand, chem. [high level] [COD]160
Solids, total suspended160
Enterococci150
Whole effluent toxicity - retest #1100
Whole effluent toxicity - retest #2100

Inspections, violations and enforcement

DateWhat EPA recordedAgency
October 14, 2025Permit Violations - Violation Specified in CommentST6
May 29, 2024Permit Violations - Violation Specified in CommentST6
November 18, 2021Permit Violations - Violation Specified in CommentST6
June 5, 2018Permit Violations - Violation Specified in CommentST6

Inspections

EPA’s inspection file holds no inspection for NPDES TX0118737.

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES TX0118737.

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Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

What this page shows

This public-records page covers NPDES permit TX0118737, held by EXXONMOBIL OIL CORPORATION for the EXXONMOBIL BEAUMONT REFINERY in Beaumont, TX, which discharges to Unnamed Arm Of The Neches River Tid within the Union Canal-Neches River (HUC 120200030406) subwatershed. The permit is listed as a Major Discharger, administratively continued, with 4 pollutants under a numeric limit and 4 pollutants with an effluent exceedance.