Washingtonville WWTP
Washingtonville, OH · Columbiana County · Publicly Owned Treatment Works
- Average flow
- 0.05 MGD
- Design flow
- 0.12 MGD
- NPDES permit
- OH0028011
- Effective
- Permit expires
- April 2029
- Population served
- 712
- CWNS 2022
Washingtonville WWTP is a publicly owned wastewater treatment works in Washingtonville, Columbiana County, Ohio treating an average of 0.05 million gallons per day against a permitted design capacity of 0.12 MGD, serving about 712 residents. Treatment on site includes clarifiers. It discharges under NPDES permit OH0028011 (effective), which expires in April 2029, with 0 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
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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 Washingtonville WWTP.
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Nearby wastewater treatment plants in Ohio
Leetonia · 2 mi away
0.13 MGD
Columbiana · 3 mi away
0.66 MGD
Leetonia · 3 mi away
0.00042 MGD
Salem · 7 mi away
1.71 MGD
Salem · 7 mi away
0.0011 MGD
Youngstown · 8 mi away
2.53 MGD
New Waterford · 9 mi away
0.11 MGD
Lisbon · 9 mi away
0.17 MGD
Washingtonville 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 September 11, 2026; facility record last updated November 15, 2025.