Rancho Viejo WWTF
Rancho Viejo, TX · Cameron County · Publicly Owned Treatment Works
- Average flow
- 0.72 MGD
- Design flow
- 0.4 MGD
- NPDES permit
- TX0127833
- Expired
- Permit expires
- July 2020
- Population served
- —
- CWNS 2022
Rancho Viejo WWTF is a publicly owned wastewater treatment works in Rancho Viejo, Cameron County, Texas treating an average of 0.72 million gallons per day against a permitted design capacity of 0.4 MGD. Treatment on site includes clarifiers, aerated lagoons, uncovered lagoons, biogas silos. It discharges under NPDES permit TX0127833 (expired), which expires in July 2020, with 4 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
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Aerated lagoons
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Uncovered lagoons
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Biogas silos
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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 Rancho Viejo WWTF.
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Nearby wastewater treatment plants in Texas
San Benito · 4 mi away
2.02 MGD
Harlingen · 4 mi away
6.61 MGD
Rio Hondo · 9 mi away
0.14 MGD
La Feria · 11 mi away
1.17 MGD
Los Fresnos · 12 mi away
1.71 MGD
Santa Rosa · 13 mi away
0.3 MGD
Mercedes · 15 mi away
3.23 MGD
Sebastian · 17 mi away
0.08 MGD
Rancho Viejo 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 April 10, 2025.