Bay City STP
Bay City, OR · Tillamook County · Publicly Owned Treatment Works
- Average flow
- 0.17 MGD
- Design flow
- 0.21 MGD
- NPDES permit
- OR0022578
- Effective
- Permit expires
- September 2029
- Population served
- 1,462
- CWNS 2022
Bay City STP is a publicly owned wastewater treatment works in Bay City, Tillamook County, Oregon treating an average of 0.17 million gallons per day against a permitted design capacity of 0.21 MGD, serving about 1,462 residents. Treatment on site includes uncovered lagoons. It discharges under NPDES permit OR0022578 (effective), which expires in September 2029, with 0 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Uncovered lagoons
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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 Bay City STP.
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Nearby wastewater treatment plants in Oregon
Garibaldi · 3 mi away
0.11 MGD
Rockaway Beach · 6 mi away
0.08 MGD
Rockaway Beach · 7 mi away
0.19 MGD
Tillamook · 7 mi away
0.02 MGD
Nehalem · 14 mi away
0.3 MGD
Hebo · 20 mi away
0.02 MGD
Arch Cape · 20 mi away
0.08 MGD
Cloverdale · 21 mi away
0.0078 MGD
Bay City 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 March 14, 2025.