Thornville WWTP
Thornville, OH · Perry County · Publicly Owned Treatment Works
- Average flow
- 0.11 MGD
- Design flow
- 0.4 MGD
- NPDES permit
- OH0027723
- Effective
- Permit expires
- February 2028
- Population served
- 1,096
- CWNS 2022
Thornville WWTP is a publicly owned wastewater treatment works in Thornville, Perry County, Ohio treating an average of 0.11 million gallons per day against a permitted design capacity of 0.4 MGD, serving about 1,096 residents. Treatment on site includes clarifiers. It discharges under NPDES permit OH0027723 (effective), which expires in February 2028, with 58 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
- 58
- Effluent violations
- 58
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Thornville WWTP.
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Nearby wastewater treatment plants in Ohio
Buckeye Lake · 4 mi away
0.52 MGD
Millersport · 6 mi away
0.1 MGD
Glenford · 6 mi away
0.0082 MGD
Heath · 6 mi away
0.0098 MGD
Hebron · 7 mi away
0.44 MGD
Newark · 8 mi away
0.02 MGD
Baltimore · 9 mi away
0.12 MGD
Somerset · 10 mi away
0.09 MGD
Thornville 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 29, 2025.