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Clean Water Act discharge permit · NPDES TX0047511

PORT ACRES WWTP, Port Arthur, TX: NPDES TX0047511 discharge permit, effluent exceedances, inspections, penalties

PORT ACRES WWTP, held by PORT ARTHUR, CITY OF, holds NPDES permit TX0047511, which discharges to Rhodair Gully;Taylor Bayou Above Tidal. EPA’s file records it issued August 10, 2020 and expiring August 10, 2023.

PORT ACRES WWTP, Port Arthur, Texas: Individual permit TX0047511, held by PORT ARTHUR, CITY OF; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued August 10, 2020, term to August 10, 2023; discharges to RHODAIR GULLY;TAYLOR BAYOU ABOVE TIDAL.

  • Nitrogen, ammonia total [as N]: 3 limits, 138 violations of any kind, 121 effluent exceedances, latest January 31, 2023, largest 561% over the limit.
  • Solids, total suspended: 3 limits, 139 violations of any kind, 120 effluent exceedances, latest July 31, 2026, largest 1,640% over the limit.
  • Flow, in conduit or thru treatment plant: 4 limits, 108 violations of any kind, 58 effluent exceedances, latest August 31, 2020, largest 64,991% over the limit.
  • BOD, carbonaceous [5 day, 20 C]: 3 limits, 56 violations of any kind, 36 effluent exceedances, latest March 31, 2023, largest 366% over the limit.
  • E. coli: 2 limits, 24 violations of any kind, 12 effluent exceedances, latest June 30, 2021, largest 1,113% over the limit.
  • Whole Effluent Toxicity [WET] - C. dubia: 2 limits, 20 violations of any kind, 6 effluent exceedances, latest June 30, 2026, largest 40% over the limit.
  • Chlorine, total residual: 2 limits, 15 violations of any kind, 2 effluent exceedances, latest January 31, 2025, largest 3,300% over the limit.
  • Whole effluent toxicity: 0 limits, 14 violations of any kind, 2 effluent exceedances, latest June 30, 2017, largest 100% over the limit.
  • Polychlorinated biphenyls [PCBs]: 0 limits, 2 violations of any kind, 1 effluent exceedance, latest July 31, 2011, largest 240% over the limit.
  • NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 20 violations of any kind, 0 effluent exceedances.
  • LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 20 violations of any kind, 0 effluent exceedances.
  • LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 20 violations of any kind, 0 effluent exceedances.
  • LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 20 violations of any kind, 0 effluent exceedances.
  • Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 18 violations of any kind, 0 effluent exceedances.
  • NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 18 violations of any kind, 0 effluent exceedances.
  • Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 18 violations of any kind, 0 effluent exceedances.
  • Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas: 2 limits, 18 violations of any kind, 0 effluent exceedances.
  • LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 18 violations of any kind, 0 effluent exceedances.
  • NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 16 violations of any kind, 0 effluent exceedances.
  • Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 14 violations of any kind, 0 effluent exceedances.
  • NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 14 violations of any kind, 0 effluent exceedances.
  • pH: 2 limits, 13 violations of any kind, 0 effluent exceedances.
  • Oxygen, dissolved [DO]: 1 limit, 6 violations of any kind, 0 effluent exceedances.
  • LC50 Pass/Fail Static 24Hr Acute D. Pulex: 1 limit, 6 violations of any kind, 0 effluent exceedances.
  • LC50 Pass/Fail Static 24Hr Acute Pimephales promelas: 1 limit, 6 violations of any kind, 0 effluent exceedances.
  • Arsenic, dry weight: 0 limits, 5 violations of any kind, 0 effluent exceedances.
  • Chromium, sludge, total, dry weight [as Cr]: 0 limits, 5 violations of any kind, 0 effluent exceedances.
  • Selenium, dry weight: 0 limits, 3 violations of any kind, 0 effluent exceedances.
  • Copper, dry weight: 0 limits, 3 violations of any kind, 0 effluent exceedances.
  • Cadmium, dry weight: 0 limits, 3 violations of any kind, 0 effluent exceedances.
  • Molybdenum, sludge, total, dry weight [as Mo]: 0 limits, 3 violations of any kind, 0 effluent exceedances.
  • Zinc, sludge, total, dry weight [as Zn]: 0 limits, 3 violations of any kind, 0 effluent exceedances.
  • Lead, sludge, total, dry weight [as Pb]: 0 limits, 3 violations of any kind, 0 effluent exceedances.
  • Nickel, sludge, total, dry weight [as Ni]: 0 limits, 3 violations of any kind, 0 effluent exceedances.
  • Mercury, sludge, total, dry weight [as Hg]: 0 limits, 3 violations of any kind, 0 effluent exceedances.
  • Nickel, total [as Ni]: 0 limits, 2 violations of any kind, 0 effluent exceedances.
  • Level of pathogen requirements achieved: 0 limits, 2 violations of any kind, 0 effluent exceedances.
  • Description of pathogen option used: 0 limits, 2 violations of any kind, 0 effluent exceedances.
  • Vector attraction reduction alternative used: 0 limits, 2 violations of any kind, 0 effluent exceedances.
  • Fecal coliform: 0 limits, 1 violation of any kind, 0 effluent exceedances.
  • Toxicity characteristic leaching procedure: 0 limits, 1 violation of any kind, 0 effluent exceedances.
  • Ann. amt sludge disposed by other method: 0 limits, 1 violation of any kind, 0 effluent exceedances.
  • Annual amt of sludge incinerated: 0 limits, 1 violation of any kind, 0 effluent exceedances.
  • Annual sludge production, total: 0 limits, 1 violation of any kind, 0 effluent exceedances.
  • Annual amount of sludge land applied: 0 limits, 1 violation of any kind, 0 effluent exceedances.
  • Annual amt. sludge disposed surface unit: 0 limits, 1 violation of any kind, 0 effluent exceedances.
  • Annual amt sludge disposed in landfill: 0 limits, 1 violation of any kind, 0 effluent exceedances.
  • Annual amt sludge transported interstate: 0 limits, 1 violation of any kind, 0 effluent exceedances.
  • Unit w/liner/leachate collection system: 0 limits, 1 violation of any kind, 0 effluent exceedances.
  • Compliance w/part 258 sludge requirement: 0 limits, 1 violation of any kind, 0 effluent exceedances.
  • Boundary areas: 0 limits, 1 violation of any kind, 0 effluent exceedances.
  • Salmonella: 0 limits, 1 violation of any kind, 0 effluent exceedances.
  • Pollutant table from 503.13: 0 limits, 1 violation of any kind, 0 effluent exceedances.
  • Whole effluent toxicity - retest #1: 3 limits, 0 violations of any kind, 0 effluent exceedances.
  • Whole effluent toxicity - retest #2: 3 limits, 0 violations of any kind, 0 effluent exceedances.
  • October 26, 2026: Under Review (State).
  • September 14, 2026: Follow-Up (S).
  • June 9, 2026: Phone Call/ EMAIL (State).
  • July 8, 2025: Permit Violations - Violation Specified in Comment (ST6).
  • December 14, 2022: Permit Violations - Violation Specified in Comment (ST6).
  • May 3, 2021: Permit Violations - Violation Specified in Comment (ST6).
  • July 26, 2018: Permit Violations - Violation Specified in Comment (ST6).

Texas holds 1,720 Publicly owned treatment works coverages of this permit type in EPA’s file; 1,417 were issued before TX0047511. PORT ARTHUR, CITY OF holds 3 permits in Texas.

Other permits held by PORT ARTHUR, CITY OF

Coverages issued nearest TX0047511

PORT ACRES WWTP among its neighbors

EPA’s permit file holds 124 discharge permits in the Salt Bayou subwatershed (HUC 120402010300), TX0047511 among them. Its county holds 302, 16 of them major permits; TX0047511 is a major permit.

Other permits in the Salt Bayou subwatershed (HUC 120402010300)

Identity

Facility as filedPORT ACRES WWTP
Permittee as filedPORT ARTHUR, CITY OF
NPDES IDTX0047511
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMajor discharger
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedAugust 10, 2020
Expiration dateAugust 10, 2023
AddressPort Arthur, TX 77640
Receiving waterRHODAIR GULLY;TAYLOR BAYOU ABOVE TIDAL
SubwatershedSalt Bayou (HUC 120402010300)
Program components on filePOTW, Pretreatment
SIC4952 – Sewerage Systems

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
Nitrogen, ammonia total [as N]3138121January 31, 2023561% over the limit
Solids, total suspended3139120July 31, 20261,640% over the limit
Flow, in conduit or thru treatment plant410858August 31, 202064,991% over the limit
BOD, carbonaceous [5 day, 20 C]35636March 31, 2023366% over the limit
E. coli22412June 30, 20211,113% over the limit
Whole Effluent Toxicity [WET] - C. dubia2206June 30, 202640% over the limit
Chlorine, total residual2152January 31, 20253,300% over the limit
Whole effluent toxicity0142June 30, 2017100% over the limit
Polychlorinated biphenyls [PCBs]021July 31, 2011240% over the limit
NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas2200
LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas2200
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia2200
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas2200
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas2180
NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas2180
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia2180
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas2180
LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia2180
NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia2160
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia2140
NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia2140
pH2130
Oxygen, dissolved [DO]160
LC50 Pass/Fail Static 24Hr Acute D. Pulex160
LC50 Pass/Fail Static 24Hr Acute Pimephales promelas160
Arsenic, dry weight050
Chromium, sludge, total, dry weight [as Cr]050
Selenium, dry weight030
Copper, dry weight030
Cadmium, dry weight030
Molybdenum, sludge, total, dry weight [as Mo]030
Zinc, sludge, total, dry weight [as Zn]030
Lead, sludge, total, dry weight [as Pb]030
Nickel, sludge, total, dry weight [as Ni]030
Mercury, sludge, total, dry weight [as Hg]030
Nickel, total [as Ni]020
Level of pathogen requirements achieved020
Description of pathogen option used020
Vector attraction reduction alternative used020
Fecal coliform010
Toxicity characteristic leaching procedure010
Ann. amt sludge disposed by other method010
Annual amt of sludge incinerated010
Annual sludge production, total010
Annual amount of sludge land applied010
Annual amt. sludge disposed surface unit010
Annual amt sludge disposed in landfill010
Annual amt sludge transported interstate010
Unit w/liner/leachate collection system010
Compliance w/part 258 sludge requirement010
Boundary areas010
Salmonella010
Pollutant table from 503.13010
Whole effluent toxicity - retest #1300
Whole effluent toxicity - retest #2300

Inspections, violations and enforcement

DateWhat EPA recordedAgency
July 8, 2025Permit Violations - Violation Specified in CommentST6
December 14, 2022Permit Violations - Violation Specified in CommentST6
May 3, 2021Permit Violations - Violation Specified in CommentST6
July 26, 2018Permit Violations - Violation Specified in CommentST6

Inspections

DateWhat EPA recordedAgency
September 14, 2026Follow-UpS

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

DateWhat EPA recordedAgency
October 26, 2026Under ReviewState
June 9, 2026Phone Call/ EMAILState

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

What this page shows

This public-records page covers Clean Water Act discharge permit NPDES TX0047511 for the PORT ACRES WWTP in Port Arthur, TX, held by PORT ARTHUR, CITY OF, with a permit status of administratively continued and a discharger class of Major. The file lists 9 pollutants under a numeric limit and 9 pollutants with an effluent exceedance, with the permit recorded as issued August 10, 2020 and expiring August 10, 2023, as the file stood when Velarion loaded it on October 14, 2026.