Rancho Viejo WWTF
100 Hidalgo St, Rancho Viejo, TX 78575 · Cameron County · Publicly Owned Treatment Works
- Average flow
- 0.41 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 0.41 million gallons per day against a permitted design capacity of 0.4 MGD. It discharges under NPDES permit TX0127833 (expired), which expires in July 2020, with 4 recorded violations in the last three years.
Treatment technology
4 treatment structures and unit processes identified at Rancho Viejo WWTF.
Available with a free Klarifi account
See the full treatment train at Rancho Viejo WWTF: structures, unit processes and planned upgrades, with exact unit counts.
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
2 verified contacts for Rancho Viejo WWTF, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Rancho Viejo WWTF, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Texas
San Benito · 4 mi away
1.86 MGD
Harlingen · 4 mi away
6.87 MGD
Rio Hondo · 9 mi away
0.08 MGD
La Feria · 11 mi away
0.8 MGD
Los Fresnos · 12 mi away
1.19 MGD
Santa Rosa · 13 mi away
0.27 MGD
Mercedes · 15 mi away
2.21 MGD
Sebastian · 17 mi away
0.1 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 October 26, 2026; facility record last updated April 10, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biological nutrient removal · Tertiary treatment · all terms