Clean Water Act discharge permit · NPDES TX0025682
ARANSAS PASS WWTP, Aransas Pass, TX: NPDES TX0025682 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 53Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
ARANSAS PASS WWTP, held by ARANSAS PASS, CITY OF, holds NPDES permit TX0025682, which discharges to Redfish Bay;Effluent Discharge Habitat. EPA’s file records it issued August 8, 2018 and expiring August 8, 2023. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | ARANSAS PASS WWTP |
|---|---|
| Permittee as filed | ARANSAS PASS, CITY OF |
| NPDES ID | TX0025682 |
| 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 | August 8, 2018 |
| Expiration date | August 8, 2023 |
| Address | Aransas Pass, TX 78335 |
| Receiving water | REDFISH BAY;EFFLUENT DISCHARGE HABITAT |
| Subwatershed | Aransas Bay (HUC 121004050400) |
| SIC | 4952 – Sewerage Systems |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 53Pollutants on file
- 53Under a numeric limit
- 52With a violation of any kind
- 6With 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 |
|---|---|---|---|---|---|
| Enterococci | 2 | 95 | 69 | July 31, 2026 | 6,813% over the limit |
| Solids, total suspended | 3 | 53 | 17 | April 30, 2023 | 2,927% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 50 | 10 | June 30, 2026 | 220% over the limit |
| Chlorine, total residual | 2 | 32 | 10 | June 30, 2021 | 7,500% over the limit |
| BOD, 5-day, 20 deg. C | 3 | 38 | 5 | October 31, 2018 | 99,999% over the limit |
| Oxygen, dissolved [DO] | 1 | 16 | 1 | April 30, 2003 | 25% over the limit |
| pH | 3 | 30 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 2 | 26 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 2 | 24 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 2 | 23 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 2 | 23 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 2 | 23 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 2 | 22 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidia | 2 | 20 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidia | 2 | 20 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia | 2 | 17 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Menidia menidia | 2 | 17 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia | 2 | 17 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia | 2 | 16 | 0 | ||
| Arsenic, dry weight | 5 | 15 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 5 | 15 | 0 | ||
| Selenium, dry weight | 3 | 9 | 0 | ||
| Copper, dry weight | 3 | 9 | 0 | ||
| Cadmium, dry weight | 3 | 9 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 3 | 9 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 3 | 9 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 3 | 9 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 3 | 9 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 3 | 9 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | 1 | 7 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Menidia menidia | 1 | 7 | 0 | ||
| Nickel, total [as Ni] | 2 | 6 | 0 | ||
| Level of pathogen requirements achieved | 2 | 6 | 0 | ||
| Description of pathogen option used | 2 | 6 | 0 | ||
| Vector attraction reduction alternative used | 2 | 6 | 0 | ||
| Fecal coliform | 1 | 4 | 0 | ||
| Boundary areas | 1 | 4 | 0 | ||
| Salmonella | 1 | 4 | 0 | ||
| Whole effluent toxicity - retest #1 | 3 | 3 | 0 | ||
| Whole effluent toxicity - retest #2 | 3 | 3 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 1 | 3 | 0 | ||
| Toxicity characteristic leaching procedure | 1 | 3 | 0 | ||
| Ann. amt sludge disposed by other method | 1 | 3 | 0 | ||
| Annual amt of sludge incinerated | 1 | 3 | 0 | ||
| Annual sludge production, total | 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 | ||
| Annual amt sludge transported interstate | 1 | 3 | 0 | ||
| Unit w/liner/leachate collection system | 1 | 3 | 0 | ||
| Compliance w/part 258 sludge requirement | 1 | 3 | 0 | ||
| Pollutant table from 503.13 | 1 | 3 | 0 | ||
| Annual whole sludge application rate | 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
- 7Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| May 21, 2026 | Permit Violations - Violation Specified in Comment | ST6 |
| January 29, 2026 | Permit Violations - Violation Specified in Comment | ST6 |
| January 20, 2026 | Permit Violations - Violation Specified in Comment | ST6 |
| January 18, 2024 | Permit Violations - Violation Specified in Comment | ST6 |
| July 1, 2022 | Permit Violations - Violation Specified in Comment | ST6 |
| November 3, 2021 | Permit Violations - Violation Specified in Comment | ST6 |
| July 10, 2018 | 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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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.