Cle Elum WWTP
500 Owens Rd, Cle Elum, WA 98922 · Kittitas County · Publicly Owned Treatment Works
- Average flow
- 1.13 MGD
- Design flow
- —
- NPDES permit
- WA0021938
- Administratively continued
- Permit expires
- September 2024
- Population served
- 5,996
- CWNS 2022
Cle Elum WWTP is a publicly owned wastewater treatment works in Cle Elum, Kittitas County, Washington treating an average of 1.13 million gallons per day, serving about 5,996 residents. It discharges under NPDES permit WA0021938 (administratively continued), which expires in September 2024, with 0 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at Cle Elum WWTP.
Available with a free Klarifi account
See the full treatment train at Cle Elum WWTP: structures, unit processes and planned upgrades, with exact unit counts.
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
1 verified contact for Cle Elum WWTP, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at Cle Elum WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Washington
Ellensburg · 23 mi away
3.59 MGD
Kittitas · 27 mi away
0.18 MGD
Peshastin · 30 mi away
0.05 MGD
Leavenworth · 31 mi away
0.3 MGD
Cashmere · 31 mi away
0.42 MGD
Wenatchee · 33 mi away
2.86 MGD
Naches · 34 mi away
0.54 MGD
Rock Island · 38 mi away
0.06 MGD
Cle Elum 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 October 26, 2026; facility record last updated August 13, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Activated sludge · Oxidation ditch · all terms