Combined Wastewater Treatment Plant
1391 35th Ave, Sacramento, CA 95822 · Sacramento County · Publicly Owned Treatment Works
- Average flow
- 16.24 MGD
- Design flow
- 380 MGD
- NPDES permit
- CA0079111
- Expired
- Permit expires
- September 2025
- Population served
- —
- CWNS 2022
Combined Wastewater Treatment Plant is a publicly owned wastewater treatment works in Sacramento, Sacramento County, California treating an average of 16.24 million gallons per day against a permitted design capacity of 380 MGD. It discharges under NPDES permit CA0079111 (expired), which expires in September 2025, with 4 recorded violations in the last three years.
Treatment technology
Treatment structures and unit processes at Combined Wastewater Treatment Plant.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 4
- Effluent violations
- 4
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Capital improvement projects in Sacramento
Sacramento's capital improvement plan lists 28 water, sewer and wastewater line items worth $216M starting 2025–2027. The largest budgeted items are shown here.
All water and sewer capital projects in Sacramento →
| Project | Budget | Years |
|---|---|---|
| Reservoir Rehabilitation Program | $31,215,000 | 2025–2030 |
| Combined Sewer System Pipe Program | $22,527,905 | 2025–2030 |
| Water Meter Replacement Program | $19,683,200 | 2025–2030 |
| Distribution Main Rehabilitation Program | $15,544,515 | 2025–2030 |
| Wastewater Sump Rehabilitation and Replacement Program | $13,400,000 | 2025–2029 |
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 Combined 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 Combined Wastewater Treatment Plant, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in California
Elk Grove · 6 mi away
—
Davis · 10 mi away
3.8 MGD
Woodland · 15 mi away
3.86 MGD
Roseville · 18 mi away
—
Roseville · 20 mi away
—
Lincoln · 25 mi away
—
Rio Vista · 25 mi away
0.33 MGD
El Dorado Hills · 26 mi away
1.97 MGD
Combined 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 October 19, 2026; facility record last updated April 23, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Tertiary treatment · Significant industrial user · all terms