Shasta Lake WWTF
Shasta Lake, CA · Shasta County · Publicly Owned Treatment Works
- Average flow
- 0.43 MGD
- Design flow
- 1.3 MGD
- NPDES permit
- CA0079511
- Expired
- Permit expires
- January 2026
- Population served
- 7,920
- CWNS 2022
Shasta Lake WWTF is a publicly owned wastewater treatment works in Shasta Lake, Shasta County, California treating an average of 0.43 million gallons per day against a permitted design capacity of 1.3 MGD, serving about 7,920 residents. Treatment on site includes clarifiers, aerated lagoons, uncovered lagoons, carrousels / oxidation ditches. It discharges under NPDES permit CA0079511 (expired), which expires in January 2026, with 30 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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Aerated lagoons
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Uncovered lagoons
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Carrousels / oxidation ditches
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Compliance snapshot (last 3 years)
- Total violations
- 30
- Effluent violations
- 30
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
11 verified contacts for Shasta Lake WWTF, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Shasta Lake WWTF, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in California
Anderson · 11 mi away
5.67 MGD
Anderson · 14 mi away
2.32 MGD
Anderson · 15 mi away
1.11 MGD
Cottonwood · 20 mi away
0.29 MGD
Red Bluff · 36 mi away
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Dunsmuir · 36 mi away
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Mount Shasta · 43 mi away
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Mineral · 46 mi away
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Shasta Lake WWTF: 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 August 13, 2026.