Clean Water Act discharge permit · NPDES TX0111791
STILLHOUSE BRANCH WWTP, Coryell County, TX: NPDES TX0111791 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 54Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
STILLHOUSE BRANCH WWTP, held by GATESVILLE, CITY OF, holds NPDES permit TX0111791, which discharges to Stillhouse Branch; Leon River Below Proctor Lake. EPA’s file records it issued February 11, 2019 and expiring February 11, 2024. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | STILLHOUSE BRANCH WWTP |
|---|---|
| Permittee as filed | GATESVILLE, CITY OF |
| NPDES ID | TX0111791 |
| 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 | February 11, 2019 |
| Expiration date | February 11, 2024 |
| Address | Coryell County, TX 76528 |
| Receiving water | STILLHOUSE BRANCH; LEON RIVER BELOW PROCTOR LAKE |
| Subwatershed | Stillhouse Branch-Leon River (HUC 120702010902) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 54Pollutants on file
- 54Under a numeric limit
- 49With a violation of any kind
- 2With 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 |
|---|---|---|---|---|---|
| Flow, in conduit or thru treatment plant | 4 | 9 | 9 | October 31, 2016 | 90,809% over the limit |
| Copper, dry weight | 3 | 20 | 2 | July 31, 2016 | 46% over the limit |
| Arsenic, dry weight | 5 | 30 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 5 | 30 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 3 | 21 | 0 | ||
| Selenium, dry weight | 3 | 18 | 0 | ||
| Cadmium, dry weight | 3 | 18 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 3 | 18 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 3 | 18 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 3 | 18 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 3 | 18 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 4 | 16 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 4 | 16 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 4 | 16 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas | 4 | 16 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas | 4 | 16 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas | 4 | 16 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia | 4 | 14 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia | 4 | 14 | 0 | ||
| Nickel, total [as Ni] | 2 | 12 | 0 | ||
| Level of pathogen requirements achieved | 2 | 12 | 0 | ||
| Description of pathogen option used | 2 | 12 | 0 | ||
| Vector attraction reduction alternative used | 2 | 12 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 4 | 10 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 4 | 10 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 4 | 10 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 4 | 10 | 0 | ||
| Whole effluent toxicity - retest #2 | 7 | 7 | 0 | ||
| Salmonella | 1 | 7 | 0 | ||
| pH | 3 | 6 | 0 | ||
| Fecal coliform | 1 | 6 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 1 | 6 | 0 | ||
| Toxicity characteristic leaching procedure | 1 | 6 | 0 | ||
| Ann. amt sludge disposed by other method | 1 | 6 | 0 | ||
| Annual amt of sludge incinerated | 1 | 6 | 0 | ||
| Annual sludge production, total | 1 | 6 | 0 | ||
| Annual amount of sludge land applied | 1 | 6 | 0 | ||
| Annual amt. sludge disposed surface unit | 1 | 6 | 0 | ||
| Annual amt sludge disposed in landfill | 1 | 6 | 0 | ||
| Annual amt sludge transported interstate | 1 | 6 | 0 | ||
| Unit w/liner/leachate collection system | 1 | 6 | 0 | ||
| Boundary areas | 1 | 6 | 0 | ||
| Pollutant table from 503.13 | 1 | 6 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute D. Pulex | 1 | 6 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Pimephales promelas | 1 | 6 | 0 | ||
| Whole effluent toxicity - retest #1 | 7 | 5 | 0 | ||
| Compliance w/part 258 sludge requirement | 1 | 5 | 0 | ||
| E. coli | 2 | 1 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 1 | 0 | ||
| Solids, total suspended | 3 | 0 | 0 | ||
| Nitrogen, ammonia total [as N] | 3 | 0 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 3 | 0 | 0 | ||
| Chlorine, total residual | 2 | 0 | 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
- 4Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| December 12, 2024 | Permit Violations - Violation Specified in Comment | ST6 |
| January 25, 2023 | Permit Violations - Violation Specified in Comment | ST6 |
| March 28, 2019 | Permit Violations - Violation Specified in Comment | ST6 |
| May 4, 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.
Watch this permit
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, TX0111791.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
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 TX0111791 there.
Nearby on the register
- Discharge permits in Coryell County
- Every permit record in Coryell County, A to Z
- Discharge permits in Texas
- Every permit record in Texas, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.