How much wastewater does Chula Vista WWTF treat?

Chula Vista WWTF treats an average of 0.04 MGD and is permitted for a design flow of 0.05 MGD.

What is the NPDES permit for Chula Vista WWTF?

The facility discharges under NPDES permit TX0117986, currently effective, expiring January 2031.

Is Chula Vista WWTF in compliance?

Discharge monitoring reports show 2 violations at Chula Vista WWTF in the last three years, 2 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Chula Vista WWTF and how do I contact them?

Chula Vista WWTF is a publicly owned treatment works in Crystal City, Texas. Klarifi lists decision-maker contacts for this facility, available with a free trial.

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Chula Vista WWTF

Crystal City, TX · Zavala County · Publicly Owned Treatment Works

Average flow: 0.04 MGD

Design flow: 0.05 MGD

NPDES permit: TX0117986; Effective

Permit expires: January 2031

Population served: 220; CWNS 2022

Chula Vista WWTF is a publicly owned wastewater treatment works in Crystal City, Zavala County, Texas treating an average of 0.04 million gallons per day against a permitted design capacity of 0.05 MGD, serving about 220 residents. It discharges under NPDES permit TX0117986 (effective), which expires in January 2031, with 2 recorded violations in the last three years.

Treatment technology

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

Treatment structure data not yet analyzed for this facility.

Compliance snapshot (last 3 years)

Total violations: 2

Effluent violations: 2

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

Key contacts

Decision-makers at Chula Vista WWTF.

No verified contacts on file yet

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Nearby wastewater treatment plants in Texas

City Of Crystal City

Crystal City · 2 mi away

0.5 MGD

City Of Carrizo Springs WWTP

Carrizo Springs · 10 mi away

0.65 MGD

City Of Asherton

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0.13 MGD

Big Wells, City Of WWTP

Big Wells · 16 mi away

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City Of Uvalde WWTF

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Rosita Valley WWTP

Eagle Pass · 37 mi away

1.44 MGD

Dilley WWTP

Dilley · 38 mi away

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Eagle Pass STP

Eagle Pass · 39 mi away

5.78 MGD

Chula Vista WWTF: 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 October 5, 2025.

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