Susanville Sd WWTP
Susanville, CA · Lassen County · Publicly Owned Treatment Works
- Average flow
- 1.02 MGD
- Design flow
- 2 MGD
- NPDES permit
- CA0102695
- Expired
- Permit expires
- July 2013
- Population served
- 15,998
- CWNS 2022
Susanville Sd WWTP is a publicly owned wastewater treatment works in Susanville, Lassen County, California treating an average of 1.02 million gallons per day against a permitted design capacity of 2 MGD, serving about 15,998 residents. Treatment on site includes clarifiers, uncovered lagoons, carrousels / oxidation ditches. It discharges under NPDES permit CA0102695 (expired), which expires in July 2013, with 31 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
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Uncovered lagoons
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Carrousels / oxidation ditches
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Compliance snapshot (last 3 years)
- Total violations
- 31
- Effluent violations
- 15
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Susanville Sd WWTP, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Susanville Sd WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in California
Chester · 32 mi away
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Quincy · 36 mi away
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Portola · 43 mi away
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Portola · 43 mi away
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Mineral · 52 mi away
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Alturas · 73 mi away
0.22 MGD
Nevada City · 81 mi away
0.0063 MGD
Oroville · 81 mi away
3.4 MGD
Susanville Sd 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 23, 2025.