City Of Los Fresnos Wastewater Treatment Plant
Los Fresnos, TX · Cameron County · Publicly Owned Treatment Works
- Average flow
- 1.71 MGD
- Design flow
- 2 MGD
- NPDES permit
- TX0091243
- Effective
- Permit expires
- June 2030
- Population served
- 6,280
- CWNS 2022
City Of Los Fresnos Wastewater Treatment Plant is a publicly owned wastewater treatment works in Los Fresnos, Cameron County, Texas treating an average of 1.71 million gallons per day against a permitted design capacity of 2 MGD, serving about 6,280 residents. Treatment on site includes clarifiers, uncovered lagoons. It discharges under NPDES permit TX0091243 (effective), which expires in June 2030, with 4 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 4
- Effluent violations
- 4
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at City Of Los Fresnos Wastewater Treatment Plant.
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City Of Los Fresnos Wastewater Treatment Plant: 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 18, 2026.