City Of Rio Hondo WWTF
Rio Hondo, TX · Cameron County · Publicly Owned Treatment Works
- Average flow
- 0.14 MGD
- Design flow
- 0.4 MGD
- NPDES permit
- TX0027782
- Administratively continued
- Permit expires
- May 2026
- Population served
- 1,690
- CWNS 2022
City Of Rio Hondo WWTF is a publicly owned wastewater treatment works in Rio Hondo, Cameron County, Texas treating an average of 0.14 million gallons per day against a permitted design capacity of 0.4 MGD, serving about 1,690 residents. Treatment on site includes clarifiers, aerated lagoons. It discharges under NPDES permit TX0027782 (administratively continued), which expires in May 2026, with 55 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
- 55
- Effluent violations
- 25
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 Rio Hondo WWTF.
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Nearby wastewater treatment plants in Texas
San Benito · 6 mi away
2.02 MGD
Harlingen · 6 mi away
6.61 MGD
Rancho Viejo · 9 mi away
0.72 MGD
Los Fresnos · 14 mi away
1.71 MGD
Sebastian · 15 mi away
0.08 MGD
Santa Rosa · 15 mi away
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Lyford · 17 mi away
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La Feria · 17 mi away
1.17 MGD
City Of Rio Hondo 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 May 27, 2025.