Sewerage Commission - Oroville Region
Oroville, CA · Butte County · Publicly Owned Treatment Works
- Average flow
- 3.4 MGD
- Design flow
- 6.5 MGD
- NPDES permit
- CA0079235
- Effective
- Permit expires
- September 2026
- Population served
- 48,631
- CWNS 2022
Sewerage Commission - Oroville Region is a publicly owned wastewater treatment works in Oroville, Butte County, California treating an average of 3.4 million gallons per day against a permitted design capacity of 6.5 MGD, serving about 48,631 residents. Treatment on site includes clarifiers, aerated lagoons, uncovered lagoons, biogas silos. It discharges under NPDES permit CA0079235 (effective), which expires in September 2026, with 0 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
Unlock
Aerated lagoons
Unlock
Uncovered lagoons
Unlock
Biogas silos
Unlock
Unlock exact unit counts →
Compliance snapshot (last 3 years)
- Total violations
- 0
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Sewerage Commission - Oroville Region, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at Sewerage Commission - Oroville Region, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in California
Live Oak · 17 mi away
0.74 MGD
Smartsville · 24 mi away
0.01 MGD
Penn Valley · 25 mi away
0.35 MGD
Yuba City · 26 mi away
5.05 MGD
Marysville · 27 mi away
2.41 MGD
Olivehurst · 29 mi away
1.99 MGD
Colusa · 32 mi away
0.46 MGD
Nevada City · 33 mi away
0.38 MGD
Sewerage Commission - Oroville Region: 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 March 7, 2025.