Vantage STP
120 Holiday Ave, Ellensburg, WA 98926 · Kittitas County · Publicly Owned Treatment Works
- Average flow
- 0.01 MGD
- Design flow
- —
- NPDES permit
- WA0050474
- Effective
- Permit expires
- February 2030
- Population served
- 302
- CWNS 2022
Vantage STP is a publicly owned wastewater treatment works in Ellensburg, Kittitas County, Washington treating an average of 0.01 million gallons per day, serving about 302 residents. It discharges under NPDES permit WA0050474 (effective), which expires in February 2030, with 2 recorded violations in the last three years.
Treatment technology
Treatment structures and unit processes at Vantage STP.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 2
- Effluent violations
- 2
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Vantage STP.
No verified contacts on file yet
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Nearby wastewater treatment plants in Washington
Quincy · 19 mi away
0.02 MGD
Kittitas · 21 mi away
0.18 MGD
Ellensburg · 26 mi away
3.59 MGD
Rock Island · 30 mi away
0.06 MGD
Yakima · 34 mi away
8.67 MGD
Naches · 37 mi away
0.54 MGD
Othello · 37 mi away
0.89 MGD
Wenatchee · 37 mi away
2.86 MGD
Vantage 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 October 26, 2026; facility record last updated September 3, 2024.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Equalization tank · Centrate · all terms