Washington E Washington STP
Arden Station Road, Washington, PA 15301 · Washington County · Publicly Owned Treatment Works
- Average flow
- 6.15 MGD
- Design flow
- 9.77 MGD
- NPDES permit
- PA0026212
- Effective
- Permit expires
- January 2031
- Population served
- —
- CWNS 2022
Washington E Washington STP is a publicly owned wastewater treatment works in Washington, Washington County, Pennsylvania treating an average of 6.15 million gallons per day against a permitted design capacity of 9.77 MGD. It discharges under NPDES permit PA0026212 (effective), which expires in January 2031, with 169 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at Washington E Washington STP.
Available with a free Klarifi account
See the full treatment train at Washington E Washington STP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 169
- Effluent violations
- 169
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Washington E Washington STP, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at Washington E Washington STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Pennsylvania
Canonsburg · 4 mi away
0.07 MGD
Eighty Four · 6 mi away
0.01 MGD
Canonsburg · 8 mi away
0.49 MGD
Cecil · 10 mi away
0.16 MGD
Bridgeville · 10 mi away
0.01 MGD
Canonsburg · 10 mi away
1.1 MGD
Avella · 12 mi away
0.11 MGD
Atlasburg · 14 mi away
0.46 MGD
Washington E Washington 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 12, 2026; facility record last updated March 2, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Oxidation ditch · Anaerobic digester · all terms