Oso WWTP
Corpus Christi, TX · Nueces County · Publicly Owned Treatment Works
- Average flow
- 16.32 MGD
- Design flow
- 24 MGD
- NPDES permit
- TX0047058
- Administratively continued
- Permit expires
- September 2025
- Population served
- 133,576
- CWNS 2022
Oso WWTP is a publicly owned wastewater treatment works in Corpus Christi, Nueces County, Texas treating an average of 16.32 million gallons per day against a permitted design capacity of 24 MGD, serving about 133,576 residents. Treatment on site includes clarifiers. It discharges under NPDES permit TX0047058 (administratively continued), which expires in September 2025, with 1 recorded violation 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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Compliance snapshot (last 3 years)
- Total violations
- 1
- Effluent violations
- 1
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Capital improvement projects in Corpus Christi
Corpus Christi's capital improvement plan lists 110 water, sewer and wastewater line items worth $3.4B starting 2025–2034. The largest budgeted items are shown here.
All water and sewer capital projects in Corpus Christi →
| Project | Budget | Years |
|---|---|---|
| Seawater Desalination (Inner Harbor Plant) | $641,138,000 | 2025–2027 |
| City-Wide Wastewater ID/IQ | $221,650,000 | 2025–2034 |
| City-Wide Water Line Repair/Replacement - Large Diameter | $160,350,000 | 2025–2034 |
| City-Wide Water Line Repair/Replacement - Small Diameter | $159,750,000 | 2025–2034 |
| City-Wide Collection Capacity Remediation | $107,900,000 | 2025–2033 |
Full project details — scope, funding source, engineering consultant and the decision-makers behind each project — are available in Klarifi, along with similar wastewater capital projects in other cities.
Key contacts
6 verified contacts for Oso WWTP, with validated emails and direct phone numbers.
Unlock 6 verified contacts (3 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Oso WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Texas
Corpus Christi · 5 mi away
2.52 MGD
Corpus Christi · 7 mi away
3.9 MGD
Corpus Christi · 9 mi away
1.35 MGD
Ingleside · 13 mi away
0.84 MGD
Gregory · 15 mi away
0.26 MGD
Aransas Pass · 17 mi away
—
Port Aransas · 18 mi away
0.93 MGD
Taft · 19 mi away
0.91 MGD
Oso 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 May 27, 2025.