Shelter Cove WWTF
Whitethorn, CA · Humboldt County · Publicly Owned Treatment Works
- Average flow
- 0.03 MGD
- Design flow
- 0.17 MGD
- NPDES permit
- CA0023027
- Expired
- Permit expires
- June 2020
- Population served
- 1,350
- CWNS 2022
Shelter Cove WWTF is a publicly owned wastewater treatment works in Whitethorn, Humboldt County, California treating an average of 0.03 million gallons per day against a permitted design capacity of 0.17 MGD, serving about 1,350 residents. It discharges under NPDES permit CA0023027 (expired), which expires in June 2020, with 383 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 383
- Effluent violations
- 3
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Shelter Cove WWTF.
No verified contacts on file yet
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Nearby wastewater treatment plants in California
Redway · 15 mi away
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Rio Dell · 32 mi away
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Fortuna · 39 mi away
0.71 MGD
Ferndale · 40 mi away
0.15 MGD
Loleta · 43 mi away
0.05 MGD
Fort Bragg · 43 mi away
0.52 MGD
Covelo · 47 mi away
—
Eureka · 51 mi away
3.08 MGD
Shelter Cove 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 November 3, 2025.