Clean Water Act discharge permit · NPDES TX0126110
SABINE CREEK REGIONAL WWTP, Rockwall County, TX: NPDES TX0126110 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 26Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
SABINE CREEK REGIONAL WWTP, held by NORTH TEXAS MUNICIPAL WATER DISTRICT, holds NPDES permit TX0126110, which discharges to Lake Tawakoni. EPA’s file records it issued June 22, 2021 and expiring June 22, 2026. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | SABINE CREEK REGIONAL WWTP |
|---|---|
| Permittee as filed | NORTH TEXAS MUNICIPAL WATER DISTRICT |
| NPDES ID | TX0126110 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | June 22, 2021 |
| Expiration date | June 22, 2026 |
| Address | Rockwall County, TX 75189 |
| Receiving water | Lake Tawakoni |
| Subwatershed | Royse City-Sabine Creek (HUC 120100010301) |
| SIC | 4952 – Sewerage Systems |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 27Pollutants on file
- 26Under a numeric limit
- 27With a violation of any kind
- 5With 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 |
|---|---|---|---|---|---|
| Flow, in conduit or thru treatment plant | 6 | 78 | 72 | November 30, 2025 | 99,999% over the limit |
| E. coli | 2 | 44 | 44 | July 31, 2026 | 99,999% over the limit |
| Nitrogen, ammonia total [as N] | 6 | 18 | 12 | August 31, 2025 | 184% over the limit |
| Oxygen, dissolved [DO] | 2 | 3 | 1 | September 30, 2010 | 15% over the limit |
| Coliform, fecal general | 0 | 3 | 1 | April 30, 2009 | 99,999% over the limit |
| Chloride [as Cl] | 3 | 9 | 0 | ||
| Sulfate, total [as SO4] | 3 | 9 | 0 | ||
| Solids, total suspended | 6 | 6 | 0 | ||
| Solids, total dissolved | 3 | 6 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 6 | 4 | 0 | ||
| pH | 4 | 4 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 4 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 2 | 4 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 4 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 4 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 4 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 4 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 4 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas | 2 | 4 | 0 | ||
| Whole effluent toxicity - retest #1 | 3 | 3 | 0 | ||
| Whole effluent toxicity - retest #2 | 3 | 3 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 2 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas | 2 | 2 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 2 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas | 2 | 2 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute D. Pulex | 1 | 1 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Pimephales promelas | 1 | 1 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 5Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| December 10, 2024 | Permit Violations - Violation Specified in Comment | ST6 |
| October 27, 2022 | Permit Violations - Violation Specified in Comment | ST6 |
| March 30, 2021 | Permit Violations - Violation Specified in Comment | ST6 |
| May 21, 2019 | Permit Violations - Violation Specified in Comment | ST6 |
| May 24, 2017 | Permit Violations - Violation Specified in Comment | ST6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID TX0126110 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.