What is the address of Wilbur STP?

The address on the plant’s EPA facility record is 34601 Wa-21, Wilbur, WA 99185, in Lincoln County. Its coordinates are 47.7680, -118.7275. For some plants the record holds the utility’s mailing address rather than the plant gate.

What treatment technology does Wilbur STP use?

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

What is the NPDES permit for Wilbur STP?

The facility discharges under NPDES permit WA0044920, currently administratively continued, expiring July 2016.

Is Wilbur STP in compliance?

Discharge monitoring reports show 20 violations at Wilbur STP in the last three years, 11 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Wilbur STP and how do I contact them?

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

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Wilbur STP

34601 Wa-21, Wilbur, WA 99185 · Lincoln County · Publicly Owned Treatment Works

Average flow: —

Design flow: —

NPDES permit: WA0044920; Administratively continued

Permit expires: July 2016

Population served: 1,013; CWNS 2022

Wilbur STP is a publicly owned wastewater treatment works in Wilbur, Lincoln County, Washington, serving about 1,013 residents. It discharges under NPDES permit WA0044920 (administratively continued), which expires in July 2016, with 20 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Wilbur STP.

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 20

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 Wilbur STP, with validated emails and direct phone numbers.

Unlock 2 verified contacts

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

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Wilbur 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 4, 2026.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Lift station · Sludge dewatering · all terms

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