What is the address of Gregory STP?

The address on the plant’s EPA facility record is 300 Sunset At Intx Sunset Rd, Gregory, TX 78359, in San Patricio County. Its coordinates are 27.9185, -97.3010. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Gregory STP treat?

Gregory STP treats an average of 0.26 MGD and is permitted for a design flow of 0.64 MGD.

What treatment technology does Gregory STP use?

Klarifi has identified 2 treatment structures and unit processes at the Gregory facility. The full treatment train, with exact unit counts, is shown in Klarifi with a free account.

What is the NPDES permit for Gregory STP?

The facility discharges under NPDES permit TX0083062, currently effective, expiring March 2030.

Is Gregory STP in compliance?

Discharge monitoring reports show 8 violations at Gregory STP in the last three years, 8 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Gregory STP and how do I contact them?

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

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Gregory STP

300 Sunset At Intx Sunset Rd, Gregory, TX 78359 · 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. It discharges under NPDES permit TX0083062 (effective), which expires in March 2030, with 8 recorded violations in the last three years.

Treatment technology

2 treatment structures and unit processes identified at Gregory STP.

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

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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

2 verified contacts for Gregory STP, with validated emails and direct phone numbers.

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

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Nearby wastewater treatment plants in Texas

City Of Taft Baird WWTF

Taft · 6 mi away

0.51 MGD

City Of Ingleside WWTP

Ingleside · 6 mi away

1.2 MGD

Aransas Pass WWTP

Aransas Pass · 10 mi away

1.45 MGD

City Of Corpus Christi

Corpus Christi · 11 mi away

4.83 MGD

Bayside Water Reclamation Facility

Bayside · 13 mi away

0.0041 MGD

Oso WWTP

Corpus Christi · 15 mi away

21.26 MGD

North Mustang Island WWTP

Port Aransas · 15 mi away

1.6 MGD

Welder Park WWTP

Sinton · 15 mi away

0.02 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 October 26, 2026; facility record last updated April 11, 2025.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Lift station · Sludge dewatering · all terms

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