Isla Blanca WWTP
Port Isabel, TX · Cameron County · Publicly Owned Treatment Works
- Average flow
- 1.15 MGD
- Design flow
- 2.6 MGD
- NPDES permit
- TX0023639
- Administratively continued
- Permit expires
- September 2025
- Population served
- 13,117
- CWNS 2022
Isla Blanca WWTP is a publicly owned wastewater treatment works in Port Isabel, Cameron County, Texas treating an average of 1.15 million gallons per day against a permitted design capacity of 2.6 MGD, serving about 13,117 residents. Treatment on site includes clarifiers, uncovered lagoons. It discharges under NPDES permit TX0023639 (administratively continued), which expires in September 2025, with 3 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
- 3
- Effluent violations
- 3
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for Isla Blanca WWTP, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Isla Blanca WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Texas
Port Isabel · 6 mi away
0.62 MGD
Laguna Vista · 7 mi away
0.33 MGD
Port Isabel · 7 mi away
1.4 MGD
Brownsville · 13 mi away
0.11 MGD
Brownsville · 16 mi away
13.69 MGD
Los Fresnos · 16 mi away
1.71 MGD
Brownsville · 19 mi away
—
Rio Hondo · 26 mi away
0.14 MGD
Isla Blanca 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 July 29, 2026.