Pacific Beach STP
Pacific Beach, WA · Grays Harbor County · Publicly Owned Treatment Works
- Average flow
- 0.09 MGD
- Design flow
- 0.77 MGD
- NPDES permit
- WA0037095
- Effective
- Permit expires
- August 2030
- Population served
- 2,003
- CWNS 2022
Pacific Beach STP is a publicly owned wastewater treatment works in Pacific Beach, Grays Harbor County, Washington treating an average of 0.09 million gallons per day against a permitted design capacity of 0.77 MGD, serving about 2,003 residents. Treatment on site includes clarifiers, uncovered lagoons, carrousels / oxidation ditches. It discharges under NPDES permit WA0037095 (effective), which expires in August 2030, with 37 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
- 37
- Effluent violations
- 36
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Pacific Beach STP.
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Nearby wastewater treatment plants in Washington
Moclips · 3 mi away
0.01 MGD
Hoquiam · 21 mi away
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Montesano · 32 mi away
0.24 MGD
Forks · 35 mi away
0.04 MGD
Littlerock · 54 mi away
0.04 MGD
Shelton · 60 mi away
0.000000013 MGD
Olympia · 62 mi away
—
Rochester · 62 mi away
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Pacific Beach STP: 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 20, 2025.