Hubbard STP
Hubbard, OR · Marion County · Publicly Owned Treatment Works
- Average flow
- 0.17 MGD
- Design flow
- 0.34 MGD
- NPDES permit
- OR0020591
- Effective
- Permit expires
- August 2027
- Population served
- 3,315
- CWNS 2022
Hubbard STP is a publicly owned wastewater treatment works in Hubbard, Marion County, Oregon treating an average of 0.17 million gallons per day against a permitted design capacity of 0.34 MGD, serving about 3,315 residents. Treatment on site includes clarifiers. It discharges under NPDES permit OR0020591 (effective), which expires in August 2027, with 10 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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Compliance snapshot (last 3 years)
- Total violations
- 10
- Effluent violations
- 10
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for Hubbard STP, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Hubbard STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Oregon
Aurora · 4 mi away
0.08 MGD
Gervais · 6 mi away
0.13 MGD
Mount Angel · 8 mi away
—
Canby · 10 mi away
0.99 MGD
Dundee · 11 mi away
—
Brooks · 12 mi away
0.05 MGD
Dayton · 13 mi away
0.16 MGD
Lafayette · 15 mi away
0.27 MGD
Hubbard 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 August 18, 2026.