Clean Water Act discharge permit · NPDES TX0139653
LOS PINOS WWTP, Huffman, TX: NPDES TX0139653 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 8Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
LOS PINOS WWTP, held by TEXAS WATER UTILITIES LP, holds NPDES permit TX0139653, which discharges to Lake Houston. EPA’s file records it issued May 29, 2020 and expiring May 29, 2025. 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 | LOS PINOS WWTP |
|---|---|
| Permittee as filed | TEXAS WATER UTILITIES LP |
| NPDES ID | TX0139653 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | May 29, 2020 |
| Expiration date | May 29, 2025 |
| Address | Huffman, TX 77336 |
| Receiving water | Lake Houston |
| Subwatershed | Luce Bayou-Frontal Lake Houston (HUC 120401030205) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 8Pollutants on file
- 8Under a numeric limit
- 4With a violation of any kind
- 3With 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 | 16 | 15 | August 31, 2025 | 677% over the limit |
| Solids, total suspended | 3 | 14 | 13 | April 30, 2026 | 2,248% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 3 | 2 | 1 | October 31, 2024 | 12% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 2 | 0 | ||
| pH | 2 | 0 | 0 | ||
| Chlorine, total residual | 2 | 0 | 0 | ||
| E. coli | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| June 29, 2026 | 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 TX0139653 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.