Port Angeles WWTP
Port Angeles, WA · Clallam County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 21.6 MGD
- NPDES permit
- WA0023973
- Administratively continued
- Permit expires
- January 2021
- Population served
- 21,841
- CWNS 2022
Port Angeles WWTP is a publicly owned wastewater treatment works in Port Angeles, Clallam County, Washington, serving about 21,841 residents. Treatment on site includes clarifiers, biogas silos. It discharges under NPDES permit WA0023973 (administratively continued), which expires in January 2021, with 0 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
- 0
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Port Angeles WWTP.
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Nearby wastewater treatment plants in Washington
Sequim · 16 mi away
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Port Townsend · 29 mi away
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Lopez Island · 37 mi away
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Clallam Bay · 42 mi away
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Sekiu · 43 mi away
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Forks · 43 mi away
0.04 MGD
Mount Vernon · 46 mi away
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Kingston · 47 mi away
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Port Angeles 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 July 3, 2025.