Brentwood Wastewater Treatment Plant
Brentwood, CA · Contra Costa County · Publicly Owned Treatment Works
- Average flow
- 1.46 MGD
- Design flow
- 5 MGD
- NPDES permit
- CA0082660
- Effective
- Permit expires
- May 2029
- Population served
- 46,800
- CWNS 2022
Brentwood Wastewater Treatment Plant is a publicly owned wastewater treatment works in Brentwood, Contra Costa County, California treating an average of 1.46 million gallons per day against a permitted design capacity of 5 MGD, serving about 46,800 residents. Treatment on site includes clarifiers, carrousels / oxidation ditches, biogas silos. It discharges under NPDES permit CA0082660 (effective), which expires in May 2029, with 17 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
- 17
- Effluent violations
- 13
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Capital improvement projects in Brentwood
Brentwood's capital improvement plan lists 22 water, sewer and wastewater line items worth $74M starting 2025–2028. The largest budgeted items are shown here.
All water and sewer capital projects in Brentwood →
| Project | Budget | Years |
|---|---|---|
| Wastewater Treatment Plant Expansion - Phase II | $30,000,000 | 2025–2027 |
| Brentwood Manor Water and Wastewater Rehabilitation | $5,787,000 | 2025–2026 |
| Pump Station 2.4 Installation | $4,350,000 | 2025–2026 |
| Wastewater Treatment Plant Tertiary Filter Expansion | $4,200,000 | 2028–2029 |
| Brentwood Boulevard Wastewater Rehabilitation | $4,050,000 | 2025–2026 |
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
2 verified contacts for Brentwood Wastewater Treatment Plant, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Brentwood Wastewater Treatment Plant, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in California
Oakley · 3 mi away
2.71 MGD
Discovery Bay · 7 mi away
1.01 MGD
Antioch · 9 mi away
—
Rio Vista · 13 mi away
0.5 MGD
Mountain House · 15 mi away
1.74 MGD
Rio Vista · 16 mi away
0.32 MGD
Lodi · 19 mi away
—
Stockton · 20 mi away
29.2 MGD
Brentwood Wastewater Treatment Plant: 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 5, 2025.