Clean Water Act discharge permit · NPDES TX0113875
OLMITO WSC WWTP, Olmito, TX: NPDES TX0113875 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 38Pollutants under a numeric limit
- 8Pollutants with an effluent exceedance
OLMITO WSC WWTP, held by OLMITO WATER SUPPLY CORPORATION, holds NPDES permit TX0113875, which discharges to Via 16 Pipe To Cameron County Drai. EPA’s file records it issued September 1, 2015 and expiring July 1, 2020. 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 | OLMITO WSC WWTP |
|---|---|
| Permittee as filed | OLMITO WATER SUPPLY CORPORATION |
| NPDES ID | TX0113875 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | September 1, 2015 |
| Expiration date | July 1, 2020 |
| Address | Olmito, TX 78575 |
| Receiving water | VIA 16 PIPE TO CAMERON COUNTY DRAI |
| Subwatershed | Bahia Grande-Brownsville Ship Channel (HUC 121102080900) |
| 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
- 38Pollutants on file
- 38Under a numeric limit
- 37With a violation of any kind
- 8With 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 | 381 | 243 | July 31, 2026 | 99,999% over the limit |
| E. coli | 2 | 129 | 123 | July 31, 2025 | 99,999% over the limit |
| Solids, total suspended | 3 | 294 | 117 | May 31, 2026 | 814% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 3 | 271 | 116 | May 31, 2026 | 5,310% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 165 | 26 | September 30, 2020 | 29,633% over the limit |
| Oxygen, dissolved [DO] | 1 | 79 | 16 | July 31, 2026 | 91% over the limit |
| pH | 3 | 122 | 1 | June 30, 2026 | |
| Chlorine, total residual | 1 | 11 | 1 | March 31, 2026 | 1% over the limit |
| Arsenic, dry weight | 5 | 20 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 5 | 20 | 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 | ||
| 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 | ||
| Fecal coliform | 1 | 4 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 1 | 4 | 0 | ||
| Toxicity characteristic leaching procedure | 1 | 4 | 0 | ||
| Ann. amt sludge disposed by other method | 1 | 4 | 0 | ||
| Annual amt of sludge incinerated | 1 | 4 | 0 | ||
| Annual sludge production, total | 1 | 4 | 0 | ||
| Annual amount of sludge land applied | 1 | 4 | 0 | ||
| Annual amt. sludge disposed surface unit | 1 | 4 | 0 | ||
| Annual amt sludge disposed in landfill | 1 | 4 | 0 | ||
| Annual amt sludge transported interstate | 1 | 4 | 0 | ||
| Unit w/liner/leachate collection system | 1 | 4 | 0 | ||
| Boundary areas | 1 | 4 | 0 | ||
| Salmonella | 1 | 4 | 0 | ||
| Pollutant table from 503.13 | 1 | 4 | 0 | ||
| Compliance w/part 258 sludge requirement | 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
- 5Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| May 12, 2026 | Permit Violations - Violation Specified in Comment | ST6 |
| July 13, 2021 | Permit Violations - Violation Specified in Comment | ST6 |
| November 16, 2020 | Permit Violations - Violation Specified in Comment | ST6 |
| August 1, 2019 | Permit Violations - Violation Specified in Comment | ST6 |
| May 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.