Wishram Wastewater Treatment Plant
525 Bridgeway Rd, Wishram, WA 98673 · Klickitat County · Publicly Owned Treatment Works
- Average flow
- 0.01 MGD
- Design flow
- 0.19 MGD
- NPDES permit
- WA0051292
- Administratively continued
- Permit expires
- August 2019
- Population served
- 211
- CWNS 2022
Wishram Wastewater Treatment Plant is a publicly owned wastewater treatment works in Wishram, Klickitat County, Washington treating an average of 0.01 million gallons per day against a permitted design capacity of 0.19 MGD, serving about 211 residents. It discharges under NPDES permit WA0051292 (administratively continued), which expires in August 2019, with 0 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Wishram Wastewater Treatment Plant.
Available with a free Klarifi account
See the full treatment train at Wishram Wastewater Treatment Plant: 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
Decision-makers at Wishram Wastewater Treatment Plant.
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Wishram 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 November 8, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Equalization tank · Centrate · all terms