Clean Water Act discharge permit · NPDES TXG114100
ENNIS READY MIX, Ennis, TX: NPDES TXG114100 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 20Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
ENNIS READY MIX, held by Summit Materials, LLC, holds NPDES permit TXG114100. EPA’s file records it issued March 16, 2026 and expiring November 6, 2026.
ENNIS READY MIX, Ennis, Texas: Coverage under a general permit TXG114100, held by Summit Materials, LLC; Effective; issued March 16, 2026, term to November 6, 2026; Ready-Mix Concrete Manufacturing.
- pH: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- Solids, total suspended: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Oil & Grease: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Arsenic, total [as As]: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Barium, total [as Ba]: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Cadmium, total [as Cd]: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Chromium, total [as Cr]: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Copper, total [as Cu]: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Lead, total [as Pb]: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Manganese, total [as Mn]: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Nickel, total [as Ni]: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Silver, total [as Ag]: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Zinc, total [as Zn]: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Selenium, total [as Se]: 1 limit, 0 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.
- Flow, in conduit or thru treatment plant: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Mercury, total [as Hg]: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- LC50 Pass/Fail Static 24Hr Acute D. Pulex: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- LC50 Pass/Fail Static 24Hr Acute Pimephales promelas: 1 limit, 0 violations of any kind, 0 effluent exceedances.
Other permits held by Summit Materials, LLC
- MM-FARMERSVILLE RM, Farmersville: TXG114053, issued March 12, 2026
- MM MIDLOTHIAN RAILPORT READY MIX, Midlothian: TXG114054, issued March 14, 2026
- MM RHOME READY MIX, Rhome: TXG114055, issued March 14, 2026
- MM ROANOKE READY MIX, Roanoke: TXG114056, issued March 14, 2026
- MM SANGER READY MIX, Sanger: TXG114057, issued March 14, 2026
- MM WEATHERFORD READY MIX, Weatherford: TXG114058, issued March 14, 2026
- MM WEBB RD READY MIX, Arlington: TXG114059, issued March 14, 2026
- MM CELINA READY MIX, Celina: TXG114060, issued March 14, 2026
- MM CORINTH ST READY MIX, Dallas: TXG114061, issued March 14, 2026
- MM PONDER READY MIX, Ponder: TXG114062, issued March 14, 2026
ENNIS READY MIX among its neighbors
EPA’s permit file holds 22 discharge permits in the Walker Creek-Village Creek subwatershed (HUC 120301050404), TXG114100 among them. Its county holds 460, 4 of them major permits; TXG114100 is a minor permit.
Other permits in the Walker Creek-Village Creek subwatershed (HUC 120301050404)
- CERTAINTEED ROOFING, Ennis: TXR05DT65, minor permit, permit term to August 13, 2026
- CITY OF ENNIS LANDFILL INACTIVE - 947A, Ennis: TXR05FB21, minor permit, permit term to August 13, 2026
- CODY, Ennis: TXRNEBP18, minor permit, permit term to August 13, 2026
- ELK OF TEXAS, Ennis: TXG670574, minor permit, permit term to April 4, 2030
- ENNIS BUSINESS FORMS, Ennis: TXRNEBP02, minor permit, permit term to August 13, 2026
- ENNIS GATEWAY ADDITION, Ennis: TXR1506SR, minor permit, discharging to COTTONWOOD CREEK, permit term to March 4, 2028
- ENNIS PLANT, Ennis: TXG110526, minor permit, discharging to DRAINAGE DITCH TO COTTONWOOD CREEK, permit term to November 7, 2011
- ENNIS PLANT, Ennis: TXG670549, minor permit, permit term to April 4, 2030
- ENNIS SONOMA TRAIL, Ennis: TXR1558YG, minor permit, discharging to UPPER TRINITY RIVER, permit term to March 4, 2028
- FRISCO PLANT, Frisco: TXG110525, minor permit, permit term to November 7, 2011
What the register holds for ENNIS READY MIX: its NPDES ID, its permit type and status, its dates, its address in Ennis, Texas, and 20 pollutants under a numeric limit. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES TXG114100.
Identity
| Facility as filed | ENNIS READY MIX |
|---|---|
| Permittee as filed | Summit Materials, LLC |
| NPDES ID | TXG114100 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | March 16, 2026 |
| Expiration date | November 6, 2026 |
| Address | Ennis, TX 75119 |
| Subwatershed | Walker Creek-Village Creek (HUC 120301050404) |
| NAICS | 327320 – Ready-Mix Concrete Manufacturing |
| SIC | 3273 – Ready-Mixed Concrete |
Effluent limits and exceedances
- 20Pollutants on file
- 20Under a numeric limit
- 0With a violation of any kind
- 0With 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 | 2 | 0 | 0 | ||
| Solids, total suspended | 1 | 0 | 0 | ||
| Oil & Grease | 1 | 0 | 0 | ||
| Arsenic, total [as As] | 1 | 0 | 0 | ||
| Barium, total [as Ba] | 1 | 0 | 0 | ||
| Cadmium, total [as Cd] | 1 | 0 | 0 | ||
| Chromium, total [as Cr] | 1 | 0 | 0 | ||
| Copper, total [as Cu] | 1 | 0 | 0 | ||
| Lead, total [as Pb] | 1 | 0 | 0 | ||
| Manganese, total [as Mn] | 1 | 0 | 0 | ||
| Nickel, total [as Ni] | 1 | 0 | 0 | ||
| Silver, total [as Ag] | 1 | 0 | 0 | ||
| Zinc, total [as Zn] | 1 | 0 | 0 | ||
| Selenium, total [as Se] | 1 | 0 | 0 | ||
| Whole effluent toxicity - retest #1 | 1 | 0 | 0 | ||
| Whole effluent toxicity - retest #2 | 1 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 1 | 0 | 0 | ||
| Mercury, total [as Hg] | 1 | 0 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute D. Pulex | 1 | 0 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Pimephales promelas | 1 | 0 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES TXG114100.
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES TXG114100.
Inspections
EPA’s inspection file holds no inspection for NPDES TXG114100.
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 TXG114100.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.