Clean Water Act discharge permit · NPDES TX0091243
CITY OF LOS FRESNOS WWTP, Los Fresnos, TX: NPDES TX0091243 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 55Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
CITY OF LOS FRESNOS WWTP, held by LOS FRESNOS, CITY OF, holds NPDES permit TX0091243, which discharges to Private Ditch; Los Fresnos W Ditch. EPA’s file records it issued May 13, 2019 and expiring May 13, 2024.
CITY OF LOS FRESNOS WWTP, Los Fresnos, Texas: Individual permit TX0091243, held by LOS FRESNOS, CITY OF; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued May 13, 2019, term to May 13, 2024; discharges to PRIVATE DITCH; LOS FRESNOS W DITCH.
- Nitrogen, ammonia total [as N]: 3 limits, 96 violations of any kind, 89 effluent exceedances, latest October 31, 2020, largest 1,300% over the limit.
- Solids, total suspended: 3 limits, 17 violations of any kind, 11 effluent exceedances, latest May 31, 2026, largest 103% over the limit.
- BOD, carbonaceous [5 day, 20 C]: 3 limits, 11 violations of any kind, 5 effluent exceedances, latest July 31, 2016, largest 140% over the limit.
- E. coli: 2 limits, 7 violations of any kind, 5 effluent exceedances, latest April 30, 2014, largest 130% over the limit.
- Flow, in conduit or thru treatment plant: 4 limits, 21 violations of any kind, 3 effluent exceedances, latest March 31, 2025, largest 43,700% over the limit.
- Arsenic, dry weight: 5 limits, 20 violations of any kind, 0 effluent exceedances.
- Chromium, sludge, total, dry weight [as Cr]: 5 limits, 20 violations of any kind, 0 effluent exceedances.
- Whole effluent toxicity: 0 limits, 14 violations of any kind, 0 effluent exceedances.
- Chlorine, total residual: 2 limits, 13 violations of any kind, 0 effluent exceedances.
- Selenium, dry weight: 3 limits, 12 violations of any kind, 0 effluent exceedances.
- Copper, dry weight: 3 limits, 12 violations of any kind, 0 effluent exceedances.
- Cadmium, dry weight: 3 limits, 12 violations of any kind, 0 effluent exceedances.
- Molybdenum, sludge, total, dry weight [as Mo]: 3 limits, 12 violations of any kind, 0 effluent exceedances.
- Zinc, sludge, total, dry weight [as Zn]: 3 limits, 12 violations of any kind, 0 effluent exceedances.
- Lead, sludge, total, dry weight [as Pb]: 3 limits, 12 violations of any kind, 0 effluent exceedances.
- Nickel, sludge, total, dry weight [as Ni]: 3 limits, 12 violations of any kind, 0 effluent exceedances.
- Mercury, sludge, total, dry weight [as Hg]: 3 limits, 12 violations of any kind, 0 effluent exceedances.
- pH: 3 limits, 10 violations of any kind, 0 effluent exceedances.
- Nickel, total [as Ni]: 2 limits, 8 violations of any kind, 0 effluent exceedances.
- Level of pathogen requirements achieved: 2 limits, 8 violations of any kind, 0 effluent exceedances.
- Description of pathogen option used: 2 limits, 8 violations of any kind, 0 effluent exceedances.
- Vector attraction reduction alternative used: 2 limits, 8 violations of any kind, 0 effluent exceedances.
- LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 6 violations of any kind, 0 effluent exceedances.
- LC50 Pass/Fail Static 24Hr Acute D. Pulex: 1 limit, 6 violations of any kind, 0 effluent exceedances.
- LC50 Pass/Fail Static 24Hr Acute Pimephales promelas: 1 limit, 6 violations of any kind, 0 effluent exceedances.
- Fecal coliform: 1 limit, 5 violations of any kind, 0 effluent exceedances.
- Salmonella: 1 limit, 5 violations of any kind, 0 effluent exceedances.
- Whole effluent toxicity - retest #1: 3 limits, 4 violations of any kind, 0 effluent exceedances.
- Whole effluent toxicity - retest #2: 3 limits, 4 violations of any kind, 0 effluent exceedances.
- Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 4 violations of any kind, 0 effluent exceedances.
- NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 4 violations of any kind, 0 effluent exceedances.
- NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 4 violations of any kind, 0 effluent exceedances.
- NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 4 violations of any kind, 0 effluent exceedances.
- Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 4 violations of any kind, 0 effluent exceedances.
- LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 4 violations of any kind, 0 effluent exceedances.
- Toxicity characteristic leaching procedure: 1 limit, 4 violations of any kind, 0 effluent exceedances.
- Unit w/liner/leachate collection system: 1 limit, 4 violations of any kind, 0 effluent exceedances.
- Compliance w/part 258 sludge requirement: 1 limit, 4 violations of any kind, 0 effluent exceedances.
- Boundary areas: 1 limit, 4 violations of any kind, 0 effluent exceedances.
- Pollutant table from 503.13: 1 limit, 4 violations of any kind, 0 effluent exceedances.
- Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex: 0 limits, 4 violations of any kind, 0 effluent exceedances.
- LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas: 0 limits, 4 violations of any kind, 0 effluent exceedances.
- NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex: 0 limits, 4 violations of any kind, 0 effluent exceedances.
- NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas: 0 limits, 4 violations of any kind, 0 effluent exceedances.
- Polychlorinated biphenyls [PCBs]: 1 limit, 3 violations of any kind, 0 effluent exceedances.
- Ann. amt sludge disposed by other method: 1 limit, 3 violations of any kind, 0 effluent exceedances.
- Annual amt of sludge incinerated: 1 limit, 3 violations of any kind, 0 effluent exceedances.
- Annual amount of sludge land applied: 1 limit, 3 violations of any kind, 0 effluent exceedances.
- Annual amt. sludge disposed surface unit: 1 limit, 3 violations of any kind, 0 effluent exceedances.
- Annual amt sludge disposed in landfill: 1 limit, 3 violations of any kind, 0 effluent exceedances.
- Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 2 violations of any kind, 0 effluent exceedances.
- NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 2 violations of any kind, 0 effluent exceedances.
- Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas: 2 limits, 2 violations of any kind, 0 effluent exceedances.
- LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 2 violations of any kind, 0 effluent exceedances.
- LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 2 violations of any kind, 0 effluent exceedances.
- Oxygen, dissolved [DO]: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Annual sludge production, total: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Annual amt sludge transported interstate: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Whole Effluent Toxicity [WET] - C. dubia: 8 limits, 0 violations of any kind, 0 effluent exceedances.
- Annual whole sludge application rate: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- February 4, 2025: Permit Violations - Violation Specified in Comment (ST6).
- January 18, 2023: Permit Violations - Violation Specified in Comment (ST6).
- August 27, 2020: Permit Violations - Violation Specified in Comment (ST6).
- July 19, 2018: Permit Violations - Violation Specified in Comment (ST6).
Texas holds 1,720 Publicly owned treatment works coverages of this permit type in EPA’s file; 1,077 were issued before TX0091243.
Coverages issued nearest TX0091243
- May 10, 2019: CITY OF NEW LONDON SEXTON CITY WWTP, New London, TX0114847, held by NEW LONDON, CITY OF
- May 13, 2019: CITY OF BRECKENRIDGE WWTP, Breckenridge, TX0023213, held by BRECKENRIDGE, CITY OF
- May 13, 2019: COPPERAS COVE SOUTH WWTF, Copperas Cove, TX0067873, held by COPPERAS COVE, CITY OF
- May 13, 2019: COPPERAS COVE NORTHEAST WWTP, Copperas Cove, TX0069850, held by COPPERAS COVE, CITY OF
- May 13, 2019: SAN LEON MUD WWTP, San Leon, TX0071978, held by SAN LEON MUD
- May 14, 2019: LITTLE CEDAR BAYOU WWTP, La Porte, TX0022799, held by LA PORTE, CITY OF
- May 14, 2019: CITY OF EASTLAND WWTP, Eastland, TX0024007, held by EASTLAND, CITY OF
- May 14, 2019: PALO PINTO COUNTY WWTP, Palo Pinto, TX0101664, held by PALO PINTO COUNTY
- May 14, 2019: CITY OF CISCO WTP, Cisco, TX0119814, held by CISCO, CITY OF
- May 16, 2019: CITY OF HEARNE WWTP 2, Hearne, TX0025879, held by HEARNE, CITY OF
CITY OF LOS FRESNOS WWTP among its neighbors
EPA’s permit file holds 199 discharge permits in the Bahia Grande-Brownsville Ship Channel subwatershed (HUC 121102080900), TX0091243 among them. Its county holds 327, 11 of them major permits; TX0091243 is a major permit.
Other permits in the Bahia Grande-Brownsville Ship Channel subwatershed (HUC 121102080900)
- 16300 RL OSTOS ROAD, Brownsville: TXR1541NT, minor permit, discharging to LAGUNA MADRE, permit term to March 4, 2028
- 2022 CITY OF BROWNSVILLE STREET IMPROVEMENTS, Brownsville: TXR1576MK, minor permit, discharging to 2494B, permit term to March 4, 2028
- 57 SPACE CONCRETE, Brownsville: TXR1579UH, minor permit, discharging to BROWNSVILLE SHIP CHANNEL, permit term to March 4, 2028
- 7- ELEVEN BROWNSVILLE SUBDIVISION, Brownsville: TXR1533MG, minor permit, discharging to SAN MARTIN LAKES, permit term to March 4, 2028
- ALAMO CONCRETE PRODUCTS PLANT 85, Brownsville: TXG110941, minor permit, discharging to BROWNSVILLE SHIP CHANNEL, permit term to November 7, 2021
- ALEXIS M HERNANDEZ MARTINEZ, Brownsville: TXRNECC86, minor permit, permit term to August 13, 2026
- ALL STAR METALS LLC, Brownsville: TXR05FA0M, minor permit, permit term to February 28, 2026
- AMAZONCOM SERVICES LLC - WBV1, Brownsville: TXR05GY97, minor permit, permit term to August 13, 2026
- ARCEN SUBDIVISION, Browsville: TXR1578VV, minor permit, discharging to RESACA, permit term to March 4, 2028
- ARX ENERGY BROWNSVILLE, Brownville: TXR1568RB, minor permit, discharging to BROWNSVILLE SHIP CHANNEL, permit term to March 4, 2028
Identity
| Facility as filed | CITY OF LOS FRESNOS WWTP |
|---|---|
| Permittee as filed | LOS FRESNOS, CITY OF |
| NPDES ID | TX0091243 |
| 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 | May 13, 2019 |
| Expiration date | May 13, 2024 |
| Address | Los Fresnos, TX 78566 |
| Receiving water | PRIVATE DITCH; LOS FRESNOS W DITCH |
| Subwatershed | Bahia Grande-Brownsville Ship Channel (HUC 121102080900) |
| SIC | 4952 – Sewerage Systems |
| Other EPA IDs (FRS) | RCRA handler TXD070479118 |
Effluent limits and exceedances
- 60Pollutants on file
- 55Under a numeric limit
- 58With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 3 | 96 | 89 | October 31, 2020 | 1,300% over the limit |
| Solids, total suspended | 3 | 17 | 11 | May 31, 2026 | 103% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 3 | 11 | 5 | July 31, 2016 | 140% over the limit |
| E. coli | 2 | 7 | 5 | April 30, 2014 | 130% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 21 | 3 | March 31, 2025 | 43,700% over the limit |
| Arsenic, dry weight | 5 | 20 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 5 | 20 | 0 | ||
| Whole effluent toxicity | 0 | 14 | 0 | ||
| Chlorine, total residual | 2 | 13 | 0 | ||
| Selenium, dry weight | 3 | 12 | 0 | ||
| Copper, dry weight | 3 | 12 | 0 | ||
| Cadmium, dry weight | 3 | 12 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 3 | 12 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 3 | 12 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 3 | 12 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 3 | 12 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 3 | 12 | 0 | ||
| pH | 3 | 10 | 0 | ||
| Nickel, total [as Ni] | 2 | 8 | 0 | ||
| Level of pathogen requirements achieved | 2 | 8 | 0 | ||
| Description of pathogen option used | 2 | 8 | 0 | ||
| Vector attraction reduction alternative used | 2 | 8 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 6 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute D. Pulex | 1 | 6 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Pimephales promelas | 1 | 6 | 0 | ||
| Fecal coliform | 1 | 5 | 0 | ||
| Salmonella | 1 | 5 | 0 | ||
| Whole effluent toxicity - retest #1 | 3 | 4 | 0 | ||
| Whole effluent toxicity - retest #2 | 3 | 4 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 4 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 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 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 4 | 0 | ||
| Toxicity characteristic leaching procedure | 1 | 4 | 0 | ||
| Unit w/liner/leachate collection system | 1 | 4 | 0 | ||
| Compliance w/part 258 sludge requirement | 1 | 4 | 0 | ||
| Boundary areas | 1 | 4 | 0 | ||
| Pollutant table from 503.13 | 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 | ||
| Polychlorinated biphenyls [PCBs] | 1 | 3 | 0 | ||
| Ann. amt sludge disposed by other method | 1 | 3 | 0 | ||
| Annual amt of sludge incinerated | 1 | 3 | 0 | ||
| Annual amount of sludge land applied | 1 | 3 | 0 | ||
| Annual amt. sludge disposed surface unit | 1 | 3 | 0 | ||
| Annual amt sludge disposed in landfill | 1 | 3 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 2 | 2 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 2 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas | 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 Pimephales promelas | 2 | 2 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 2 | 0 | ||
| Annual sludge production, total | 1 | 2 | 0 | ||
| Annual amt sludge transported interstate | 1 | 2 | 0 | ||
| Whole Effluent Toxicity [WET] - C. dubia | 8 | 0 | 0 | ||
| Annual whole sludge application rate | 1 | 0 | 0 |
Inspections, violations and enforcement
- 4Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| February 4, 2025 | Permit Violations - Violation Specified in Comment | ST6 |
| January 18, 2023 | Permit Violations - Violation Specified in Comment | ST6 |
| August 27, 2020 | Permit Violations - Violation Specified in Comment | ST6 |
| July 19, 2018 | Permit Violations - Violation Specified in Comment | ST6 |
Inspections
EPA’s inspection file holds no inspection for NPDES TX0091243.
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 TX0091243.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.