Washington Twp STP
Marble, PA · Clarion County · Publicly Owned Treatment Works
- Average flow
- 0.02 MGD
- Design flow
- 0.09 MGD
- NPDES permit
- PA0023591
- Effective
- Permit expires
- July 2030
- Population served
- —
- CWNS 2022
Washington Twp STP is a publicly owned wastewater treatment works in Marble, Clarion County, Pennsylvania treating an average of 0.02 million gallons per day against a permitted design capacity of 0.09 MGD. It discharges under NPDES permit PA0023591 (effective), which expires in July 2030, with 19 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 19
- Effluent violations
- 19
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for Washington Twp STP, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Washington Twp STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Pennsylvania
Knox · 9 mi away
0.12 MGD
Clarion · 11 mi away
0.0056 MGD
Strattanville · 11 mi away
0.04 MGD
Tionesta · 11 mi away
0.02 MGD
Rouseville · 16 mi away
0.05 MGD
Oil City · 16 mi away
0.85 MGD
Sigel · 18 mi away
0.00006 MGD
Foxburg · 18 mi away
0.03 MGD
Washington Twp 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 September 11, 2026; facility record last updated October 1, 2025.