How much wastewater does City Of Marquez WWTP treat?

City Of Marquez WWTP treats an average of 0.04 MGD and is permitted for a design flow of 0.04 MGD.

What treatment technology does City Of Marquez WWTP use?

Klarifi has identified aerated lagoons, uncovered lagoons at the Marquez facility.

What is the NPDES permit for City Of Marquez WWTP?

The facility discharges under NPDES permit TX0117579, currently administratively continued, expiring July 2026.

Is City Of Marquez WWTP in compliance?

Discharge monitoring reports show 111 violations at City Of Marquez WWTP in the last three years, 111 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates City Of Marquez WWTP and how do I contact them?

City Of Marquez WWTP is a publicly owned treatment works in Marquez, Texas. Klarifi lists 1 verified decision-maker contact for this facility, available with a free trial.

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City Of Marquez WWTP

Marquez, TX · Leon County · Publicly Owned Treatment Works

Average flow: 0.04 MGD

Design flow: 0.04 MGD

NPDES permit: TX0117579; Administratively continued

Permit expires: July 2026

Population served: 463; CWNS 2022

City Of Marquez WWTP is a publicly owned wastewater treatment works in Marquez, Leon County, Texas treating an average of 0.04 million gallons per day against a permitted design capacity of 0.04 MGD, serving about 463 residents. Treatment on site includes aerated lagoons, uncovered lagoons. It discharges under NPDES permit TX0117579 (administratively continued), which expires in July 2026, with 111 recorded violations in the last three years.

Treatment technology

Treatment structures identified at this facility. Exact unit counts are available in Klarifi.

Aerated lagoons

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Uncovered lagoons

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Compliance snapshot (last 3 years)

Total violations: 111

Effluent violations: 111

Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.

Key contacts

1 verified contact for City Of Marquez WWTP, with validated emails and direct phone numbers.

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Names, validated emails and direct phone numbers for decision-makers at City Of Marquez WWTP, plus the full compliance history and discharge data.

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City Of Marquez 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 April 11, 2025.

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