Cottonwood Creek WWTP
Manor, TX · Travis County · Publicly Owned Treatment Works
- Average flow
- 0.11 MGD
- Design flow
- 0.4 MGD
- NPDES permit
- TX0137448
- Effective
- Permit expires
- August 2030
- Population served
- 4,000
- CWNS 2022
Cottonwood Creek WWTP is a publicly owned wastewater treatment works in Manor, Travis County, Texas treating an average of 0.11 million gallons per day against a permitted design capacity of 0.4 MGD, serving about 4,000 residents. It discharges under NPDES permit TX0137448 (effective), which expires in August 2030, with 5 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 5
- 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 Cottonwood Creek WWTP.
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Nearby wastewater treatment plants in Texas
Manor · 3 mi away
1.18 MGD
Austin · 6 mi away
1.09 MGD
Elgin · 6 mi away
1.48 MGD
Pflugerville · 9 mi away
4.95 MGD
Austin · 10 mi away
0.34 MGD
Hutto · 11 mi away
1.87 MGD
Austin · 11 mi away
56.6 MGD
Del Valle · 12 mi away
43.8 MGD
Cottonwood Creek 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 April 12, 2025.