Clean Water Act discharge permit · NPDES TX0135470
SAN BENITO WWTP, San Benito, TX: NPDES TX0135470 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 17Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
SAN BENITO WWTP, held by SAN BENITO, CITY OF, holds NPDES permit TX0135470, which discharges to Arroyo Colorado Above Tidal. EPA’s file records it issued December 29, 2020 and expiring December 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 | SAN BENITO WWTP |
|---|---|
| Permittee as filed | SAN BENITO, CITY OF |
| NPDES ID | TX0135470 |
| 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 | December 29, 2020 |
| Expiration date | December 29, 2025 |
| Address | San Benito, TX 78586 |
| Receiving water | Arroyo Colorado Above Tidal |
| Subwatershed | Line V Canal-Arroyo Colorado (HUC 121102080700) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 43Pollutants on file
- 17Under a numeric limit
- 33With a violation of any kind
- 4With 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 |
|---|---|---|---|---|---|
| E. coli | 4 | 22 | 20 | March 31, 2026 | 2,208% over the limit |
| Nitrogen, ammonia total [as N] | 6 | 15 | 12 | March 31, 2018 | 250% over the limit |
| Solids, total suspended | 6 | 6 | 3 | March 31, 2021 | 52% over the limit |
| Flow, in conduit or thru treatment plant | 8 | 5 | 1 | October 31, 2015 | 206% over the limit |
| Molybdenum, sludge, total, dry weight [as Mo] | 0 | 4 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 0 | 4 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 6 | 3 | 0 | ||
| pH | 4 | 2 | 0 | ||
| Arsenic, dry weight | 0 | 2 | 0 | ||
| Selenium, dry weight | 0 | 2 | 0 | ||
| Copper, dry weight | 0 | 2 | 0 | ||
| Cadmium, dry weight | 0 | 2 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 0 | 2 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 0 | 2 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 0 | 2 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 0 | 2 | 0 | ||
| Pollutant table from 503.13 | 0 | 2 | 0 | ||
| Description of pathogen option used | 0 | 2 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 2 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 0 | 2 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 2 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 0 | 2 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 2 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 0 | 2 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 2 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas | 0 | 2 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 2 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas | 0 | 2 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 2 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas | 0 | 2 | 0 | ||
| Oxygen, dissolved [DO] | 2 | 1 | 0 | ||
| Level of pathogen requirements achieved | 0 | 1 | 0 | ||
| Vector attraction reduction alternative used | 0 | 1 | 0 | ||
| Whole effluent toxicity - retest #1 | 3 | 0 | 0 | ||
| Whole effluent toxicity - retest #2 | 3 | 0 | 0 | ||
| Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex | 2 | 0 | 0 | ||
| LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas | 2 | 0 | 0 | ||
| NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex | 2 | 0 | 0 | ||
| NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas | 2 | 0 | 0 | ||
| LOAEC Lethal Static Renewal 48HR Acute Daphnia pulex | 2 | 0 | 0 | ||
| LOAEC Lethal Survival Static Renewal 48Hr Acute Pimephales promelas | 2 | 0 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute D. Pulex | 1 | 0 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Pimephales promelas | 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
- 4Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 10, 2025 | Permit Violations - Violation Specified in Comment | ST6 |
| November 10, 2023 | Permit Violations - Violation Specified in Comment | ST6 |
| March 19, 2019 | Permit Violations - Violation Specified in Comment | ST6 |
| July 6, 2017 | Permit Violations - Violation Specified in Comment | ST6 |
Inspections
EPA’s inspection file holds no inspection for NPDES TX0135470.
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 TX0135470.
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
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, TX0135470.
Start the watch
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- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
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 TX0135470 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.