Scwa: Sonoma Valley Csdtp
Sonoma, CA · Sonoma County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 16 MGD
- NPDES permit
- CA0037800
- Effective
- Permit expires
- January 2030
- Population served
- 30,188
- CWNS 2022
Scwa: Sonoma Valley Csdtp is a publicly owned wastewater treatment plant in Sonoma, Sonoma County, California, serving about 30,188 residents. Treatment on site includes clarifiers, uncovered lagoons. It discharges under NPDES permit CA0037800 (effective), which expires in January 2030, with 22 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
- 22
- Effluent violations
- 15
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for Scwa: Sonoma Valley Csdtp, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Scwa: Sonoma Valley Csdtp, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in California
Napa · 9 mi away
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American Canyon · 10 mi away
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Yountville · 11 mi away
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Novato · 12 mi away
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Vallejo · 15 mi away
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Saint Helena · 17 mi away
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Rodeo · 18 mi away
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Pinole · 18 mi away
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Scwa: Sonoma Valley Csdtp: 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 February 3, 2025.