What is the address of Lafayette STP?

The address on the plant’s EPA facility record is 260 SE Madison St, Lafayette, OR 97127, in Yamhill County. Its coordinates are 45.2393, -123.1121. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Lafayette STP treat?

Lafayette STP treats an average of 0.42 MGD.

What treatment technology does Lafayette STP use?

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

What is the NPDES permit for Lafayette STP?

The facility discharges under NPDES permit OR0022551, currently effective, expiring March 2031.

Is Lafayette STP in compliance?

Discharge monitoring reports show 6 violations at Lafayette STP in the last three years, 4 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Lafayette STP and how do I contact them?

Lafayette STP is a publicly owned treatment works in Lafayette, Oregon. Klarifi lists 1 verified decision-maker contact for this facility, available with a free trial.

Try for free Log in

Lafayette STP

260 SE Madison St, Lafayette, OR 97127 · Yamhill County · Publicly Owned Treatment Works

Average flow: 0.42 MGD

Design flow: —

NPDES permit: OR0022551; Effective

Permit expires: March 2031

Population served: 4,338; CWNS 2022

Lafayette STP is a publicly owned wastewater treatment works in Lafayette, Yamhill County, Oregon treating an average of 0.42 million gallons per day, serving about 4,338 residents. It discharges under NPDES permit OR0022551 (effective), which expires in March 2031, with 6 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Lafayette STP.

Available with a free Klarifi account

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

Create a free account

Compliance snapshot (last 3 years)

Total violations: 6

Effluent violations: 4

Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.

Key contacts

1 verified contact for Lafayette STP, with validated emails and direct phone numbers.

Unlock 1 verified contact

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

Try Klarifi free

Nearby wastewater treatment plants in Oregon

Dayton STP

Dayton · 2 mi away

—

Mcminnville WWTP

Mcminnville · 3 mi away

4.99 MGD

Carlton STP

Carlton · 5 mi away

0.45 MGD

Dundee STP

Dundee · 6 mi away

0.33 MGD

Yamhill STP

Yamhill · 8 mi away

0.25 MGD

Amity STP

Amity · 9 mi away

0.29 MGD

Gervais STP

Gervais · 14 mi away

0.41 MGD

Hubbard STP

Hubbard · 15 mi away

0.21 MGD

Lafayette 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 October 10, 2026.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Activated sludge · Oxidation ditch · all terms

Try Klarifi for free

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

Try for free