Clean Water Act discharge permit · NPDES TX0132675
TILDEN WASTEWATER TREATMENT FACILITY, Tilden, TX: NPDES TX0132675 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 8Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
TILDEN WASTEWATER TREATMENT FACILITY, held by MCMULLEN COUNTY WCID 1, holds NPDES permit TX0132675, which discharges to Frio River Above Choke Canyon. EPA’s file records it issued January 7, 2021 and expiring January 7, 2026. 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 | TILDEN WASTEWATER TREATMENT FACILITY |
|---|---|
| Permittee as filed | MCMULLEN COUNTY WCID 1 |
| NPDES ID | TX0132675 |
| 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 | January 7, 2021 |
| Expiration date | January 7, 2026 |
| Address | Tilden, TX 78072 |
| Receiving water | Frio River above Choke Canyon |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Javelina Hollow-Frio River (HUC 121101080408) |
| 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
- 37Pollutants on file
- 8Under a numeric limit
- 37With a violation of any kind
- 7With 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 | 107 | 74 | July 31, 2026 | 1,365% over the limit |
| Nitrogen, ammonia total [as N] | 3 | 88 | 61 | October 31, 2025 | 2,279% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 3 | 50 | 23 | February 28, 2026 | 508% over the limit |
| Chlorine, total residual | 2 | 40 | 22 | July 31, 2026 | 333% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 28 | 9 | February 28, 2025 | 239% over the limit |
| E. coli | 2 | 29 | 3 | January 31, 2026 | 310% over the limit |
| pH | 2 | 28 | 2 | November 30, 2025 | |
| Arsenic, dry weight | 0 | 35 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 0 | 35 | 0 | ||
| Selenium, dry weight | 0 | 21 | 0 | ||
| Copper, dry weight | 0 | 21 | 0 | ||
| Cadmium, dry weight | 0 | 21 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 0 | 21 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 0 | 21 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 0 | 21 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 0 | 21 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 0 | 21 | 0 | ||
| Nickel, total [as Ni] | 0 | 14 | 0 | ||
| Level of pathogen requirements achieved | 0 | 14 | 0 | ||
| Description of pathogen option used | 0 | 14 | 0 | ||
| Vector attraction reduction alternative used | 0 | 14 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 9 | 0 | ||
| Toxicity characteristic leaching procedure | 0 | 7 | 0 | ||
| Unit w/liner/leachate collection system | 0 | 7 | 0 | ||
| Boundary areas | 0 | 7 | 0 | ||
| Pollutant table from 503.13 | 0 | 7 | 0 | ||
| Fecal coliform | 0 | 6 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 0 | 6 | 0 | ||
| Ann. amt sludge disposed by other method | 0 | 6 | 0 | ||
| Annual amt of sludge incinerated | 0 | 6 | 0 | ||
| Annual sludge production, total | 0 | 6 | 0 | ||
| Annual amount of sludge land applied | 0 | 6 | 0 | ||
| Annual amt. sludge disposed surface unit | 0 | 6 | 0 | ||
| Annual amt sludge disposed in landfill | 0 | 6 | 0 | ||
| Annual amt sludge transported interstate | 0 | 6 | 0 | ||
| Compliance w/part 258 sludge requirement | 0 | 6 | 0 | ||
| Salmonella | 0 | 6 | 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 |
|---|---|---|
| November 17, 2025 | 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.