Wenatchee Wastewater Treatment Plant
Wenatchee, WA · Chelan County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 16.5 MGD
- NPDES permit
- WA0023949
- Administratively continued
- Permit expires
- August 2015
- Population served
- 36,733
- CWNS 2022
Wenatchee Wastewater Treatment Plant is a publicly owned wastewater treatment works in Wenatchee, Chelan County, Washington, serving about 36,733 residents. Treatment on site includes clarifiers, biogas silos. It discharges under NPDES permit WA0023949 (administratively continued), which expires in August 2015, with 10 recorded violations 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
- 10
- Effluent violations
- 10
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
4 verified contacts for Wenatchee Wastewater Treatment Plant, with validated emails and direct phone numbers.
Unlock 4 verified contacts (1 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Wenatchee Wastewater Treatment Plant, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Washington
Cashmere · 9 mi away
0.39 MGD
Rock Island · 9 mi away
0.06 MGD
Peshastin · 17 mi away
0.05 MGD
Entiat · 18 mi away
—
Leavenworth · 20 mi away
—
Quincy · 21 mi away
0.03 MGD
Chelan · 30 mi away
—
Kittitas · 31 mi away
—
Wenatchee Wastewater Treatment Plant: 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 March 1, 2025.