North Bend STP
North Bend, WA · King County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- —
- NPDES permit
- WA0029351
- Effective
- Permit expires
- January 2024
- Population served
- —
- CWNS 2022
North Bend STP is a publicly owned wastewater treatment works in North Bend, King County, Washington. Treatment on site includes clarifiers, carrousels / oxidation ditches. It discharges under NPDES permit WA0029351 (effective), which expires in January 2024, with 1 recorded violation in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 1
- Effluent violations
- 1
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at North Bend STP.
No verified contacts on file yet
Klarifi verifies plant and municipal decision-makers continuously. Start a free trial to browse contacts at nearby plants and flag this one for verification.
Nearby wastewater treatment plants in Washington
Snoqualmie · 4 mi away
—
Renton · 21 mi away
—
Enumclaw · 24 mi away
—
Sultan · 25 mi away
—
Seattle · 27 mi away
—
Carbonado · 32 mi away
—
Seattle · 32 mi away
—
Orting · 34 mi away
—
North Bend 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 7, 2026.