How much wastewater does City Of Cotulla WWTP treat?

City Of Cotulla WWTP treats an average of 1.75 MGD and is permitted for a design flow of 0.99 MGD.

What is the NPDES permit for City Of Cotulla WWTP?

The facility discharges under NPDES permit TX0027499, currently effective, expiring January 2031.

Is City Of Cotulla WWTP in compliance?

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

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

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

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City Of Cotulla WWTP

Q: What treatment technology does City Of Cotulla WWTP use?

Klarifi has identified uncovered lagoons, biosolids drying, disinfection, chlorine/ chloramine, screening, suspended growth, aerobic at the Cotulla facility.

Cotulla, TX · La Salle County · Publicly Owned Treatment Works

Average flow: 1.75 MGD

Design flow: 0.99 MGD

NPDES permit: TX0027499; Effective

Permit expires: January 2031

Population served: 4,800; CWNS 2022

City Of Cotulla WWTP is a publicly owned wastewater treatment works in Cotulla, La Salle County, Texas treating an average of 1.75 million gallons per day against a permitted design capacity of 0.99 MGD, serving about 4,800 residents. Treatment on site includes uncovered lagoons, biosolids drying, disinfection, chlorine/ chloramine, screening, suspended growth, aerobic. It discharges under NPDES permit TX0027499 (effective), which expires in January 2031, with 7 recorded violations in the last three years.

Treatment technology

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

Uncovered lagoons

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Biosolids Drying

unit process

Disinfection, chlorine/ chloramine

unit process

Screening

unit process

Suspended Growth, Aerobic

unit process

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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 City Of Cotulla 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 Cotulla WWTP, plus the full compliance history and discharge data.

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Nearby wastewater treatment plants in Texas

Dilley WWTP

Dilley · 17 mi away

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City Of Dilley WTP

Dilley · 17 mi away

0.006 MGD

City Of Dilley WWTP

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0.63 MGD

Big Wells, City Of WWTP

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City Of Asherton

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City Of Pearsall WWTP

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City Of Carrizo Springs WWTP

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Chula Vista WWTF

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City Of Cotulla 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 August 11, 2026.

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