STP 2a WWTP
Nacogdoches, TX · Nacogdoches County · Publicly Owned Treatment Works
- Average flow
- 6.2 MGD
- Design flow
- 12.88 MGD
- NPDES permit
- TX0055123
- Effective
- Permit expires
- April 2030
- Population served
- 48,303
- CWNS 2022
STP 2a WWTP is a publicly owned wastewater treatment works in Nacogdoches, Nacogdoches County, Texas treating an average of 6.2 million gallons per day against a permitted design capacity of 12.88 MGD, serving about 48,303 residents. Treatment on site includes clarifiers, aerated lagoons, uncovered lagoons, carrousels / oxidation ditches. It discharges under NPDES permit TX0055123 (effective), which expires in April 2030, with 7 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
Unlock
Aerated lagoons
Unlock
Uncovered lagoons
Unlock
Carrousels / oxidation ditches
Unlock
Unlock exact unit counts →
Compliance snapshot (last 3 years)
- Total violations
- 7
- Effluent violations
- 7
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for STP 2a WWTP, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at STP 2a WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Texas
Lufkin · 8 mi away
0.0027 MGD
Woden · 8 mi away
0.0069 MGD
Lufkin · 13 mi away
0.11 MGD
Wells · 18 mi away
0.07 MGD
Lufkin · 20 mi away
5.7 MGD
Hudson · 20 mi away
0.51 MGD
Garrison · 21 mi away
0.09 MGD
Cushing · 21 mi away
0.08 MGD
STP 2a 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 March 9, 2025.