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Clean Water Act discharge permit · NPDES TX0008737

VENCOREX US, Freeport, TX: NPDES TX0008737 discharge permit, effluent exceedances, inspections, penalties

VENCOREX US, held by VENCOREX US INC, holds NPDES permit TX0008737, which discharges to Dow Wastewater Canal;Brazos River. EPA’s file records it issued October 4, 2019 and expiring October 4, 2024.

VENCOREX US, Freeport, Texas: Individual permit TX0008737, held by VENCOREX US INC; Administratively continued (past its expiration date and still in force until reissued); issued October 4, 2019, term to October 4, 2024; discharges to DOW WASTEWATER CANAL;BRAZOS RIVER.

  • Enterococci: 4 limits, 48 violations of any kind, 48 effluent exceedances, latest September 30, 2025, largest 16,394% over the limit.
  • Solids, total suspended: 2 limits, 23 violations of any kind, 7 effluent exceedances, latest March 31, 2023, largest 396% over the limit.
  • Sulfate, total [as SO4]: 1 limit, 6 violations of any kind, 3 effluent exceedances, latest October 31, 2025, largest 774% over the limit.
  • pH: 4 limits, 22 violations of any kind, 2 effluent exceedances, latest August 31, 2019.
  • Oil & Grease: 3 limits, 21 violations of any kind, 2 effluent exceedances, latest August 31, 2021, largest 31% over the limit.
  • Flow, in conduit or thru treatment plant: 4 limits, 23 violations of any kind, 1 effluent exceedance, latest November 30, 2001, largest 111% over the limit.
  • Temperature, water deg. fahrenheit: 1 limit, 8 violations of any kind, 1 effluent exceedance, latest September 30, 2023, largest 1% over the limit.
  • Zinc, total [as Zn]: 1 limit, 7 violations of any kind, 1 effluent exceedance, latest July 31, 2009, largest 70% over the limit.
  • Methylene chloride: 0 limits, 50 violations of any kind, 0 effluent exceedances.
  • 1,2-Dichloroethane: 0 limits, 36 violations of any kind, 0 effluent exceedances.
  • Carbon, tot organic [TOC]: 3 limits, 19 violations of any kind, 0 effluent exceedances.
  • BOD, 5-day, 20 deg. C: 2 limits, 16 violations of any kind, 0 effluent exceedances.
  • Nitrogen, ammonia total [as N]: 2 limits, 16 violations of any kind, 0 effluent exceedances.
  • Radium 226, total: 0 limits, 16 violations of any kind, 0 effluent exceedances.
  • Phenolics, total recoverable: 0 limits, 14 violations of any kind, 0 effluent exceedances.
  • Trichloroethylene: 0 limits, 14 violations of any kind, 0 effluent exceedances.
  • Chromium, total [as Cr]: 0 limits, 12 violations of any kind, 0 effluent exceedances.
  • Lead, total [as Pb]: 0 limits, 12 violations of any kind, 0 effluent exceedances.
  • Chloroform: 0 limits, 12 violations of any kind, 0 effluent exceedances.
  • Radium 228, total: 0 limits, 7 violations of any kind, 0 effluent exceedances.
  • May 25, 2023: Permit Violations - Violation Specified in Comment (ST6).
  • August 23, 2019: Permit Violations - Violation Specified in Comment (ST6).

VENCOREX US among its neighbors

Its county holds 522, 24 of them major permits; TX0008737 is a minor permit.

Other permits in the county

  • 1172 FM 655, Rosharon: TXR1538XG, minor permit, discharging to AUSTIN BAYOU, permit term to March 4, 2028
  • 2021 C 99, Alvin: TXR05GM99, minor permit, permit term to August 13, 2026
  • 250045 - BWSC RESERVOIR INTAKE PUMP STATION, Angleton: TXR1503WO, minor permit, discharging to BRAZOS RIVER BELOW NAVASOTA RIVER, permit term to March 4, 2028
  • 3M ANGLETON, Angleton: TXRNEBP38, minor permit, permit term to August 13, 2026
  • 541 WATER SYSTEM, Alvin: TX0141623, minor permit, discharging to DETENTION BASIN CHIGGER CRK;CLEAR CREEK, permit term to July 8, 2027
  • ABIGAIL ARIAS PARK, Angleton: TXR1531XY, minor permit, discharging to BASTROP BAYOU, permit term to March 4, 2028
  • ACC HOU - FREEPORT, Freeport: TXR05GQ71, minor permit, permit term to August 13, 2026
  • AIR LIQUIDE FREEPORT ASU, Freeport: TX0065021, minor permit, discharging to EAST UNION BAYOU;INTRACOASTAL CANAL, permit term to October 29, 2024
  • ALAMO CONCRETE PRODUCTS, Iowa Colony: TXG113212, minor permit, permit term to November 6, 2026
  • ALAMO CONCRETE PRODUCTS OLD OCEAN PLANT 58, Old Ocean: TXG110080, minor permit, discharging to CEDER LAKE, permit term to November 7, 2021

Identity

Facility as filedVENCOREX US
Permittee as filedVENCOREX US INC
NPDES IDTX0008737
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedOctober 4, 2019
Expiration dateOctober 4, 2024
AddressFreeport, TX 77541
Receiving waterDOW WASTEWATER CANAL;BRAZOS RIVER
Other EPA IDs (FRS)RCRA handler TXD990659682; ICIS-AIR source TX0000004803900031

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
Enterococci44848September 30, 202516,394% over the limit
Solids, total suspended2237March 31, 2023396% over the limit
Sulfate, total [as SO4]163October 31, 2025774% over the limit
pH4222August 31, 2019
Oil & Grease3212August 31, 202131% over the limit
Flow, in conduit or thru treatment plant4231November 30, 2001111% over the limit
Temperature, water deg. fahrenheit181September 30, 20231% over the limit
Zinc, total [as Zn]171July 31, 200970% over the limit
Methylene chloride0500
1,2-Dichloroethane0360
Carbon, tot organic [TOC]3190
BOD, 5-day, 20 deg. C2160
Nitrogen, ammonia total [as N]2160
Radium 226, total0160
Phenolics, total recoverable0140
Trichloroethylene0140
Chromium, total [as Cr]0120
Lead, total [as Pb]0120
Chloroform0120
Radium 228, total070

Inspections, violations and enforcement

DateWhat EPA recordedAgency
May 25, 2023Permit Violations - Violation Specified in CommentST6
August 23, 2019Permit Violations - Violation Specified in CommentST6

Inspections

EPA’s inspection file holds no inspection for NPDES TX0008737.

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 TX0008737.

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Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

What this page shows

This public-records page covers Clean Water Act discharge permit NPDES TX0008737, held by VENCOREX US INC for its Freeport, TX facility, which discharges to the Dow Wastewater Canal and Brazos River. The permit is listed as administratively continued, with 20 pollutants on file, 11 under a numeric limit, and 8 showing an effluent exceedance.