Wenatchee Wastewater Treatment Plant
201 N Worthen St, Wenatchee, WA 98801 · Chelan County · Publicly Owned Treatment Works
- Average flow
- 2.86 MGD
- 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 treating an average of 2.86 million gallons per day against a permitted design capacity of 16.5 MGD, serving about 36,733 residents. It discharges under NPDES permit WA0023949 (administratively continued), which expires in August 2015, with 10 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at Wenatchee Wastewater Treatment Plant.
Available with a free Klarifi account
See the full treatment train at Wenatchee Wastewater Treatment Plant: structures, unit processes and planned upgrades, with exact unit counts.
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.
EPA enforcement history
Federal civil enforcement cases, compliance inspections and informal actions recorded for Wenatchee Wastewater Treatment Plant in EPA's ICIS system.
- Formal actions
- 0
- none on record
- EPA inspections
- 1
- latest Feb 2011
No formal federal enforcement case is on record for this plant.
Full case history with a free Klarifi account
Every action against Wenatchee Wastewater Treatment Plant with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
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
0.42 MGD
Rock Island · 9 mi away
0.06 MGD
Peshastin · 17 mi away
0.05 MGD
Entiat · 18 mi away
0.1 MGD
Leavenworth · 20 mi away
0.3 MGD
Quincy · 21 mi away
0.02 MGD
Chelan · 30 mi away
0.75 MGD
Kittitas · 31 mi away
0.18 MGD
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 October 26, 2026; facility record last updated March 1, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Equalization tank · Centrate · all terms