How much wastewater does North Bonneville STP treat?

North Bonneville STP treats an average of 0.06 MGD and is permitted for a design flow of 0.5 MGD.

What is the NPDES permit for North Bonneville STP?

The facility discharges under NPDES permit WA0023388, currently effective, expiring June 2029.

Is North Bonneville STP in compliance?

Discharge monitoring reports show no violations at North Bonneville STP in the last three years.

Who operates North Bonneville STP and how do I contact them?

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

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North Bonneville STP

North Bonneville, WA · Skamania County · Publicly Owned Treatment Works

Average flow: 0.06 MGD

Design flow: 0.5 MGD

NPDES permit: WA0023388; Effective

Permit expires: June 2029

Population served: 1,105; CWNS 2022

North Bonneville STP is a publicly owned wastewater treatment works in North Bonneville, Skamania County, Washington treating an average of 0.06 million gallons per day against a permitted design capacity of 0.5 MGD, serving about 1,105 residents. It discharges under NPDES permit WA0023388 (effective), which expires in June 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.

Treatment structure data not yet analyzed for this facility.

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 North Bonneville STP.

No verified contacts on file yet

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North Bonneville 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 September 3, 2024.

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