Gregory STP
Gregory, TX · San Patricio County · Publicly Owned Treatment Works
- Average flow
- 0.26 MGD
- Design flow
- 0.64 MGD
- NPDES permit
- TX0083062
- Effective
- Permit expires
- March 2030
- Population served
- 2,847
- CWNS 2022
Gregory STP is a publicly owned wastewater treatment works in Gregory, San Patricio County, Texas treating an average of 0.26 million gallons per day against a permitted design capacity of 0.64 MGD, serving about 2,847 residents. Treatment on site includes clarifiers, carrousels / oxidation ditches. It discharges under NPDES permit TX0083062 (effective), which expires in March 2030, with 8 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
- 8
- Effluent violations
- 8
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Gregory STP.
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Nearby wastewater treatment plants in Texas
Taft · 6 mi away
0.91 MGD
Ingleside · 6 mi away
0.84 MGD
Aransas Pass · 10 mi away
—
Corpus Christi · 11 mi away
3.9 MGD
Bayside · 13 mi away
0.0029 MGD
Corpus Christi · 15 mi away
16.32 MGD
Port Aransas · 15 mi away
0.93 MGD
Sinton · 15 mi away
0.0035 MGD
Gregory STP: 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 April 11, 2025.