What is the address of Hubbard STP?

The address on the plant’s EPA facility record is 3607 Sunset Dr, Hubbard, OR 97032, in Marion County. Its coordinates are 45.1856, -122.8130. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Hubbard STP treat?

Hubbard STP treats an average of 0.21 MGD and is permitted for a design flow of 0.34 MGD.

What treatment technology does Hubbard STP use?

Klarifi has identified one treatment structure or unit process at the Hubbard facility. The full treatment train, with exact unit counts, is shown in Klarifi with a free account.

What is the NPDES permit for Hubbard STP?

The facility discharges under NPDES permit OR0020591, currently effective, expiring August 2027.

Is Hubbard STP in compliance?

Discharge monitoring reports show 11 violations at Hubbard STP in the last three years, 11 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Hubbard STP and how do I contact them?

Hubbard STP is a publicly owned treatment works in Hubbard, Oregon. Klarifi lists 2 verified decision-maker contacts for this facility, available with a free trial.

Try for free Log in

Hubbard STP

3607 Sunset Dr, Hubbard, OR 97032 · Marion County · Publicly Owned Treatment Works

Average flow: 0.21 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 0.21 million gallons per day against a permitted design capacity of 0.34 MGD, serving about 3,315 residents. It discharges under NPDES permit OR0020591 (effective), which expires in August 2027, with 11 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Hubbard STP.

Available with a free Klarifi account

See the full treatment train at Hubbard STP: structures, unit processes and planned upgrades, with exact unit counts.

Create a free account

Compliance snapshot (last 3 years)

Total violations: 11

Effluent violations: 11

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.

Unlock 2 verified contacts

Names, validated emails and direct phone numbers for decision-makers at Hubbard STP, plus the full compliance history and discharge data.

Try Klarifi free

Nearby wastewater treatment plants in Oregon

Aurora Sewage Treatment Plant

Aurora · 4 mi away

0.09 MGD

Gervais STP

Gervais · 6 mi away

0.41 MGD

Mount Angel STP

Mount Angel · 8 mi away

—

Canby WWTP

Canby · 10 mi away

0.98 MGD

Dundee STP

Dundee · 11 mi away

0.33 MGD

Brooks Sewage Treatment Plant

Brooks · 12 mi away

0.19 MGD

Dayton STP

Dayton · 13 mi away

—

Lafayette STP

Lafayette · 15 mi away

0.42 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 October 26, 2026; facility record last updated August 18, 2026.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Oxidation ditch · Anaerobic digester · all terms

Try Klarifi for free

Create your own trial account and explore how Klarifi can help you.

Try for free