Stallion Run WWTP
Mustang Ridge, TX · Travis County · Publicly Owned Treatment Works
- Average flow
- 0.04 MGD
- Design flow
- 0.18 MGD
- NPDES permit
- TX0139564
- Effective
- Permit expires
- March 2031
- Population served
- —
- CWNS 2022
Stallion Run WWTP is a publicly owned wastewater treatment works in Mustang Ridge, Travis County, Texas treating an average of 0.04 million gallons per day against a permitted design capacity of 0.18 MGD. It discharges under NPDES permit TX0139564 (effective), which expires in March 2031, with 9 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 9
- Effluent violations
- 7
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Stallion Run WWTP.
No verified contacts on file yet
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Nearby wastewater treatment plants in Texas
Buda · 5 mi away
0.89 MGD
Buda · 8 mi away
1.29 MGD
Kyle · 10 mi away
4.34 MGD
Austin · 11 mi away
0.11 MGD
Del Valle · 12 mi away
43.8 MGD
Lockhart · 15 mi away
1.01 MGD
Austin · 15 mi away
56.6 MGD
Austin · 16 mi away
0.03 MGD
Stallion Run 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 September 5, 2025.