What is the address of STP 2a WWTP?

The address on the plant’s EPA facility record is 3628 Rayburn Dr, Nacogdoches, TX 75961, in Nacogdoches County. Its coordinates are 31.5584, -94.6479. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does STP 2a WWTP treat?

STP 2a WWTP treats an average of 7.52 MGD and is permitted for a design flow of 12.88 MGD.

What treatment technology does STP 2a WWTP use?

Klarifi has identified 4 treatment structures and unit processes at the Nacogdoches facility. The full treatment train, with exact unit counts, is shown in Klarifi with a free account.

What is the NPDES permit for STP 2a WWTP?

The facility discharges under NPDES permit TX0055123, currently effective, expiring April 2030.

Is STP 2a WWTP in compliance?

Discharge monitoring reports show 7 violations at STP 2a WWTP in the last three years, 7 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates STP 2a WWTP and how do I contact them?

STP 2a WWTP is a publicly owned treatment works in Nacogdoches, Texas. Klarifi lists 2 verified decision-maker contacts for this facility, available with a free trial.

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STP 2a WWTP

3628 Rayburn Dr, Nacogdoches, TX 75961 · Nacogdoches County · Publicly Owned Treatment Works

Average flow: 7.52 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 7.52 million gallons per day against a permitted design capacity of 12.88 MGD, serving about 48,303 residents. It discharges under NPDES permit TX0055123 (effective), which expires in April 2030, with 7 recorded violations in the last three years.

Treatment technology

4 treatment structures and unit processes identified at STP 2a WWTP.

Available with a free Klarifi account

See the full treatment train at STP 2a WWTP: structures, unit processes and planned upgrades, with exact unit counts.

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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.

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Names, validated emails and direct phone numbers for decision-makers at STP 2a WWTP, plus the full compliance history and discharge data.

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North Angelina County Regional Wastewater

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City Of Wells WWTP

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City Of Lufkin Wastewater Treatment Plant

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City Of Hudson WWTP

Hudson · 20 mi away

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City Of Garrison

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City Of Cushing WWTP

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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 October 26, 2026; facility record last updated March 9, 2025.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biosolids · Filter press · all terms

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