Clean Water Act discharge permit · NPDES TX0143880
WILLIAMS TRAIL WWTP, Willis, TX: NPDES TX0143880 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 8Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
WILLIAMS TRAIL WWTP, held by TEXAS WATER UTILITIES LP, holds NPDES permit TX0143880, which discharges to Mcrae Creek. EPA’s file records it issued July 17, 2023 and expiring July 17, 2028. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | WILLIAMS TRAIL WWTP |
|---|---|
| Permittee as filed | TEXAS WATER UTILITIES LP |
| NPDES ID | TX0143880 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | July 17, 2023 |
| Expiration date | July 17, 2028 |
| Address | Willis, TX 77378 |
| Receiving water | McRae Creek |
| Subwatershed | McRae Creek-Caney Creek (HUC 120401030102) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 8Pollutants on file
- 8Under a numeric limit
- 3With a violation of any kind
- 2With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 3 | 2 | 2 | December 31, 2025 | 305% over the limit |
| Solids, total suspended | 3 | 1 | 1 | March 31, 2026 | 13% over the limit |
| E. coli | 2 | 2 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 3 | 0 | 0 | ||
| pH | 2 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 0 | 0 | ||
| Chlorine, total residual | 2 | 0 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 0 | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| September 25, 2025 | Permit Violations - Violation Specified in Comment | ST6 |
| May 2, 2025 | 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.
Watch this permit
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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 TX0143880 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.