Clean Water Act discharge permit · NPDES TX0085316
SOUTH LAREDO WWTP, Laredo, TX: NPDES TX0085316 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 15Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
- 1Inspections on file
- 0Formal enforcement actions
SOUTH LAREDO WWTP, held by LAREDO, CITY OF, holds NPDES permit TX0085316, which discharges to Rio Grande Below Amistad Reservoir. EPA’s file records it issued January 5, 2021 and expiring January 5, 2026. 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 | SOUTH LAREDO WWTP |
|---|---|
| Permittee as filed | LAREDO, CITY OF |
| NPDES ID | TX0085316 |
| 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 | January 5, 2021 |
| Expiration date | January 5, 2026 |
| Address | Laredo, TX 78046 |
| Receiving water | Rio Grande Below Amistad Reservoir |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | San Idelfonso Creek-Rio Grande (HUC 130800020707) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 22Pollutants on file
- 15Under a numeric limit
- 16With 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 |
|---|---|---|---|---|---|
| E. coli | 2 | 30 | 22 | October 31, 2023 | 99,999% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 23 | 7 | September 30, 2017 | 51,492% over the limit |
| Solids, total suspended | 3 | 14 | 5 | February 28, 2023 | 133% over the limit |
| BOD, 5-day, 20 deg. C | 3 | 14 | 2 | February 28, 2019 | 100% over the limit |
| Chlorine, total residual | 2 | 9 | 1 | August 31, 2023 | 28% over the limit |
| pH | 2 | 8 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 4 | 0 | ||
| Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex | 0 | 4 | 0 | ||
| LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas | 0 | 4 | 0 | ||
| NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex | 0 | 4 | 0 | ||
| NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas | 0 | 4 | 0 | ||
| LOAEC Lethal Survival Static Renewal 48Hr Acute Pimephales promelas | 0 | 4 | 0 | ||
| LOAEC Lethal Static Renewal 48HR Acute Daphnia pulex | 0 | 2 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute D. Pulex | 1 | 1 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Pimephales promelas | 1 | 1 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 0 | 1 | 0 | ||
| Whole effluent toxicity - retest #1 | 3 | 0 | 0 | ||
| Whole effluent toxicity - retest #2 | 3 | 0 | 0 | ||
| IC25 Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex | 2 | 0 | 0 | ||
| IC25 Low Flow Pass/Fail Static Renewal 48Hr Acute Pimephales promelas | 2 | 0 | 0 | ||
| IC25 Lethal Static Renewal 48HR Acute Daphnia pulex | 2 | 0 | 0 | ||
| IC25 Lethal Static Renewal 48HR Acute Pimephales promelas | 2 | 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
- 3Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| July 24, 2025 | Permit Violations - Violation Specified in Comment | ST6 |
| November 26, 2024 | Permit Violations - Violation Specified in Comment | ST6 |
| November 20, 2018 | Permit Violations - Violation Specified in Comment | ST6 |
Inspections
| Date | What EPA recorded | Agency |
|---|---|---|
| January 5, 2026 | Follow-Up | S |
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 TX0085316.
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, TX0085316.
Start the watch
- One permit holder — $99/month
- 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 TX0085316 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.