Stillhouse Branch WWTP
Gatesville, TX · Coryell County · Publicly Owned Treatment Works
- Average flow
- 1.76 MGD
- Design flow
- 2.7 MGD
- NPDES permit
- TX0111791
- Effective
- Permit expires
- June 2029
- Population served
- —
- CWNS 2022
Stillhouse Branch WWTP is a publicly owned wastewater treatment works in Gatesville, Coryell County, Texas treating an average of 1.76 million gallons per day against a permitted design capacity of 2.7 MGD. Treatment on site includes clarifiers, carrousels / oxidation ditches. It discharges under NPDES permit TX0111791 (effective), which expires in June 2029, with 12 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 12
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Stillhouse Branch WWTP.
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Nearby wastewater treatment plants in Texas
Gatesville · 1 mi away
1.55 MGD
Oglesby · 14 mi away
0.02 MGD
Gatesville · 18 mi away
0.2 MGD
Mcgregor · 21 mi away
—
Valley Mills · 22 mi away
0.02 MGD
Copperas Cove · 22 mi away
2.29 MGD
Copperas Cove · 23 mi away
0.95 MGD
Cranfills Gap · 23 mi away
0.05 MGD
Stillhouse Branch WWTP: frequently asked questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed September 11, 2026; facility record last updated May 27, 2025.