Chewelah WWTP
Chewelah, WA · Stevens County · Publicly Owned Treatment Works
- Average flow
- 0.19 MGD
- Design flow
- —
- NPDES permit
- WA0023604
- Administratively continued
- Permit expires
- November 2016
- Population served
- 3,297
- CWNS 2022
Chewelah WWTP is a publicly owned wastewater treatment works in Chewelah, Stevens County, Washington treating an average of 0.19 million gallons per day, serving about 3,297 residents. Treatment on site includes clarifiers, carrousels / oxidation ditches. It discharges under NPDES permit WA0023604 (administratively continued), which expires in November 2016, 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 Chewelah WWTP.
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Nearby wastewater treatment plants in Washington
Colville · 20 mi away
0.62 MGD
Newport · 33 mi away
—
Ione · 36 mi away
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Metaline Falls · 41 mi away
0.001 MGD
Spokane · 42 mi away
31.72 MGD
Reardan · 42 mi away
0.03 MGD
Metaline · 43 mi away
0.02 MGD
Davenport · 46 mi away
0.15 MGD
Chewelah WWTP: 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 11, 2026.