Clean Water Act discharge permit · NPDES TX0076422
MCDONALD OBSERVATORY LOWER WWTP, Fort Davis, TX: NPDES TX0076422 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 8Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
MCDONALD OBSERVATORY LOWER WWTP, held by UNIVERSITY OF TEXAS AT AUSTIN, holds NPDES permit TX0076422, which discharges to Salciso Canyon;Impoundment;Salcido Crk;Tuly. EPA’s file records it issued November 10, 2020 and expiring November 10, 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 | MCDONALD OBSERVATORY LOWER WWTP |
|---|---|
| Permittee as filed | UNIVERSITY OF TEXAS AT AUSTIN |
| NPDES ID | TX0076422 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | November 10, 2020 |
| Expiration date | November 10, 2025 |
| Address | Fort Davis, TX 79734 |
| Receiving water | SALCISO CANYON;IMPOUNDMENT;SALCIDO CRK;TULY |
| Subwatershed | Headwaters Limpia Creek (HUC 130700050101) |
| SIC | 8221 – Colleges And Universities |
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
- 37Pollutants on file
- 8Under a numeric limit
- 37With a violation of any kind
- 4With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 3 | 25 | 4 | March 31, 2014 | 43% over the limit |
| Chlorine, total residual | 2 | 18 | 2 | August 31, 2010 | 38% over the limit |
| pH | 2 | 18 | 1 | September 30, 2005 | |
| Oxygen, dissolved [DO] | 1 | 8 | 1 | October 31, 2025 | 15% over the limit |
| Nitrogen, ammonia total [as N] | 3 | 24 | 0 | ||
| BOD, 5-day, 20 deg. C | 3 | 21 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 0 | 18 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 16 | 0 | ||
| Arsenic, dry weight | 0 | 15 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 0 | 12 | 0 | ||
| Selenium, dry weight | 0 | 9 | 0 | ||
| Copper, dry weight | 0 | 9 | 0 | ||
| Cadmium, dry weight | 0 | 9 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 0 | 9 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 0 | 9 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 0 | 9 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 0 | 9 | 0 | ||
| E. coli | 2 | 7 | 0 | ||
| Level of pathogen requirements achieved | 0 | 7 | 0 | ||
| Description of pathogen option used | 0 | 7 | 0 | ||
| Vector attraction reduction alternative used | 0 | 7 | 0 | ||
| Nickel, total [as Ni] | 0 | 6 | 0 | ||
| Unit w/liner/leachate collection system | 0 | 4 | 0 | ||
| Pollutant table from 503.13 | 0 | 4 | 0 | ||
| Fecal coliform | 0 | 3 | 0 | ||
| Annual amt sludge disposed in landfill | 0 | 3 | 0 | ||
| Boundary areas | 0 | 3 | 0 | ||
| Salmonella | 0 | 3 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 0 | 2 | 0 | ||
| Toxicity characteristic leaching procedure | 0 | 2 | 0 | ||
| Ann. amt sludge disposed by other method | 0 | 2 | 0 | ||
| Annual amt of sludge incinerated | 0 | 2 | 0 | ||
| Annual sludge production, total | 0 | 2 | 0 | ||
| Annual amount of sludge land applied | 0 | 2 | 0 | ||
| Annual amt. sludge disposed surface unit | 0 | 2 | 0 | ||
| Annual amt sludge transported interstate | 0 | 2 | 0 | ||
| Compliance w/part 258 sludge requirement | 0 | 2 | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| October 24, 2017 | 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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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 TX0076422 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.