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Clean Water Act discharge permit · NPDES TXG110235

CENTEX MATERIALS SOUTH PLANT, Austin, TX: NPDES TXG110235 discharge permit, effluent exceedances, inspections, penalties

CENTEX MATERIALS SOUTH PLANT, held by CENTEX MATERIALS, LLC, holds NPDES permit TXG110235, which discharges to Williamson Creek. EPA’s file records it issued January 10, 2007 and expiring November 7, 2011.

CENTEX MATERIALS SOUTH PLANT, Austin, Texas: Coverage under a general permit TXG110235, held by CENTEX MATERIALS, LLC; Administratively continued (past its expiration date and still in force until reissued); issued January 10, 2007, term to November 7, 2011; discharges to WILLIAMSON CREEK.

  • Solids, total suspended: 1 limit, 139 violations of any kind, 7 effluent exceedances, latest May 31, 2016, largest 2,208% over the limit.
  • pH: 2 limits, 269 violations of any kind, 4 effluent exceedances, latest November 30, 2014.
  • Oil & Grease: 1 limit, 133 violations of any kind, 0 effluent exceedances.
  • Flow, in conduit or thru treatment plant: 1 limit, 133 violations of any kind, 0 effluent exceedances.
  • Copper, total [as Cu]: 2 limits, 24 violations of any kind, 0 effluent exceedances.
  • Selenium, total [as Se]: 2 limits, 24 violations of any kind, 0 effluent exceedances.
  • Mercury, total [as Hg]: 2 limits, 24 violations of any kind, 0 effluent exceedances.
  • Arsenic, total [as As]: 2 limits, 22 violations of any kind, 0 effluent exceedances.
  • Barium, total [as Ba]: 2 limits, 22 violations of any kind, 0 effluent exceedances.
  • Cadmium, total [as Cd]: 2 limits, 22 violations of any kind, 0 effluent exceedances.
  • Chromium, total [as Cr]: 2 limits, 22 violations of any kind, 0 effluent exceedances.
  • Lead, total [as Pb]: 2 limits, 22 violations of any kind, 0 effluent exceedances.
  • Manganese, total [as Mn]: 2 limits, 22 violations of any kind, 0 effluent exceedances.
  • Nickel, total [as Ni]: 2 limits, 22 violations of any kind, 0 effluent exceedances.
  • Silver, total [as Ag]: 2 limits, 22 violations of any kind, 0 effluent exceedances.
  • Zinc, total [as Zn]: 2 limits, 22 violations of any kind, 0 effluent exceedances.
  • LC50 Pass/Fail Static 24Hr Acute D. Pulex: 1 limit, 13 violations of any kind, 0 effluent exceedances.
  • LC50 Pass/Fail Static 24Hr Acute Pimephales promelas: 1 limit, 13 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.

Other permits held by CENTEX MATERIALS, LLC

  • MANOR PLANT, Manor: TXG110618, issued December 13, 2006

CENTEX MATERIALS SOUTH PLANT among its neighbors

EPA’s permit file holds 62 discharge permits in the Williamson Creek-Onion Creek subwatershed (HUC 120902050408), TXG110235 among them. Its county holds 1,099, 15 of them major permits; TXG110235 is a minor permit.

Other permits in the Williamson Creek-Onion Creek subwatershed (HUC 120902050408)

  • 1300 DITTMAR ROAD, Austin: TXR15008V, minor permit, discharging to BOGGY CREEK, permit term to March 4, 2023
  • 1300 DITTMAR ROAD, Austin: TXR1546TK, minor permit, discharging to BOGGY CREEK, permit term to March 4, 2028
  • 7400 SOUTH CONGRESS, Austin: TXR1590TC, minor permit, discharging to BOGGY CREEK, permit term to March 4, 2028
  • AISD LANGFORD ELEMENTARY SCHOOL, Austin: TXR1590UB, minor permit, discharging to WILLIAMSON CREEK, permit term to March 4, 2028
  • ALEXAN ST ELMO, Austin: TXR1591OV, minor permit, discharging to WILLIAMSON CREEK, permit term to March 4, 2028
  • ALLERS LANDING, Austin: TXR1570SV, minor permit, discharging to MARBLE CREEK, permit term to March 4, 2028
  • BELMONT, Austin: TXR1570UX, minor permit, discharging to MARBLE CREEK, permit term to March 4, 2028
  • BIOTECH MANUFACTURING, Austin: TXRNEAR94, minor permit, permit term to August 13, 2026
  • BLUFF SPRINGS APARTMENTS, Austin: TXR1527YZ, minor permit, discharging to ONION CREEK, permit term to March 4, 2028
  • BLUFF SPRINGS APARTMENTS, Austin: TXR1550ZA, minor permit, discharging to ONION CREEK, permit term to March 4, 2028

Identity

Facility as filedCENTEX MATERIALS SOUTH PLANT
Permittee as filedCENTEX MATERIALS, LLC
NPDES IDTXG110235
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedJanuary 10, 2007
Expiration dateNovember 7, 2011
AddressAustin, TX 78745
Receiving waterWILLIAMSON CREEK
SubwatershedWilliamson Creek-Onion Creek (HUC 120902050408)

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
Solids, total suspended11397May 31, 20162,208% over the limit
pH22694November 30, 2014
Oil & Grease11330
Flow, in conduit or thru treatment plant11330
Copper, total [as Cu]2240
Selenium, total [as Se]2240
Mercury, total [as Hg]2240
Arsenic, total [as As]2220
Barium, total [as Ba]2220
Cadmium, total [as Cd]2220
Chromium, total [as Cr]2220
Lead, total [as Pb]2220
Manganese, total [as Mn]2220
Nickel, total [as Ni]2220
Silver, total [as Ag]2220
Zinc, total [as Zn]2220
LC50 Pass/Fail Static 24Hr Acute D. Pulex1130
LC50 Pass/Fail Static 24Hr Acute Pimephales promelas1130
Whole effluent toxicity - retest #1100
Whole effluent toxicity - retest #2100

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES TXG110235.

Inspections

EPA’s inspection file holds no inspection for NPDES TXG110235.

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 TXG110235.

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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 NPDES permit TXG110235 for the CENTEX MATERIALS SOUTH PLANT in Austin, TX, held by CENTEX MATERIALS, LLC and discharging to Williamson Creek in the Williamson Creek-Onion Creek subwatershed (HUC 120902050408). The permit is listed as administratively continued, with a minor discharger class, an issue date of January 10, 2007, and an expiration date of November 7, 2011. The page lists 20 pollutants on file, 20 of which are under a numeric limit, with 2 showing an effluent exceedance and 18 showing a violation of any kind.