Williamsport WWTP
Williamsport, OH · Pickaway County · Publicly Owned Treatment Works
- Average flow
- 0.12 MGD
- Design flow
- 0.15 MGD
- NPDES permit
- OH0022519
- Administratively continued
- Permit expires
- April 2021
- Population served
- 960
- CWNS 2022
Williamsport WWTP is a publicly owned wastewater treatment works in Williamsport, Pickaway County, Ohio treating an average of 0.12 million gallons per day against a permitted design capacity of 0.15 MGD, serving about 960 residents. It discharges under NPDES permit OH0022519 (administratively continued), which expires in April 2021, with 119 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
- 119
- Effluent violations
- 26
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Williamsport WWTP.
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Nearby wastewater treatment plants in Ohio
Clarksburg · 5 mi away
0.03 MGD
Williamsport · 5 mi away
0.0073 MGD
Williamsport · 8 mi away
0.02 MGD
New Holland · 8 mi away
0.05 MGD
Circleville · 9 mi away
0.19 MGD
Circleville · 9 mi away
1.17 MGD
Chillicothe · 11 mi away
0.0003 MGD
Circleville · 11 mi away
0.0044 MGD
Williamsport 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 April 12, 2025.