Clean Water Act discharge permit · NPDES TX0024082
UPPER MARTINEZ CREEK WWTP, San Antonio, TX: NPDES TX0024082 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 55Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
UPPER MARTINEZ CREEK WWTP, held by SAN ANTONIO RIVER AUTHORITY, holds NPDES permit TX0024082, which discharges to Martinez Creek; Lower Cibolo Creek. EPA’s file records it issued March 18, 2020 and expiring March 18, 2025. 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 | UPPER MARTINEZ CREEK WWTP |
|---|---|
| Permittee as filed | SAN ANTONIO RIVER AUTHORITY |
| NPDES ID | TX0024082 |
| 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 | March 18, 2020 |
| Expiration date | March 18, 2025 |
| Address | San Antonio, TX 78244 |
| Receiving water | MARTINEZ CREEK; LOWER CIBOLO CREEK |
| Subwatershed | Salitrillo Creek-Martinez Creek (HUC 121003040205) |
| SIC | 4952 – Sewerage Systems |
| Other EPA IDs (FRS) | ICIS-AIR source LA0000002210900179 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 55Pollutants on file
- 55Under a numeric limit
- 15With 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 |
|---|---|---|---|---|---|
| E. coli | 6 | 10 | 10 | July 31, 2026 | 502% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 2 | 1 | June 30, 2025 | 10% over the limit |
| Nitrogen, ammonia total [as N] | 3 | 1 | 1 | June 30, 2023 | 20% over the limit |
| Whole Effluent Toxicity [WET] - P. promelas | 8 | 4 | 0 | ||
| Arsenic, dry weight | 5 | 1 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 5 | 1 | 0 | ||
| Selenium, dry weight | 3 | 1 | 0 | ||
| Copper, dry weight | 3 | 1 | 0 | ||
| Cadmium, dry weight | 3 | 1 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 3 | 1 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 3 | 1 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 3 | 1 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 3 | 1 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 3 | 1 | 0 | ||
| Salmonella | 1 | 1 | 0 | ||
| Whole effluent toxicity - retest #1 | 9 | 0 | 0 | ||
| Whole effluent toxicity - retest #2 | 9 | 0 | 0 | ||
| Whole Effluent Toxicity [WET] - C. dubia | 8 | 0 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 6 | 0 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 6 | 0 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 6 | 0 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 6 | 0 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia | 6 | 0 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia | 6 | 0 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 4 | 0 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 4 | 0 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 4 | 0 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas | 4 | 0 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas | 4 | 0 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas | 4 | 0 | 0 | ||
| pH | 3 | 0 | 0 | ||
| Solids, total suspended | 3 | 0 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 3 | 0 | 0 | ||
| Nickel, total [as Ni] | 2 | 0 | 0 | ||
| Level of pathogen requirements achieved | 2 | 0 | 0 | ||
| Description of pathogen option used | 2 | 0 | 0 | ||
| Vector attraction reduction alternative used | 2 | 0 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 0 | 0 | ||
| Fecal coliform | 1 | 0 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 1 | 0 | 0 | ||
| Toxicity characteristic leaching procedure | 1 | 0 | 0 | ||
| Annual whole sludge application rate | 1 | 0 | 0 | ||
| Ann. amt sludge disposed by other method | 1 | 0 | 0 | ||
| Annual amt of sludge incinerated | 1 | 0 | 0 | ||
| Annual sludge production, total | 1 | 0 | 0 | ||
| Annual amount of sludge land applied | 1 | 0 | 0 | ||
| Annual amt. sludge disposed surface unit | 1 | 0 | 0 | ||
| Annual amt sludge disposed in landfill | 1 | 0 | 0 | ||
| Annual amt sludge transported interstate | 1 | 0 | 0 | ||
| Unit w/liner/leachate collection system | 1 | 0 | 0 | ||
| Compliance w/part 258 sludge requirement | 1 | 0 | 0 | ||
| Boundary areas | 1 | 0 | 0 | ||
| Pollutant table from 503.13 | 1 | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| January 24, 2025 | Permit Violations - Violation Specified in Comment | ST6 |
| October 2, 2024 | 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.