Millersburg WWTP
Millersburg, OH · Holmes County · Publicly Owned Treatment Works
- Average flow
- 0.43 MGD
- Design flow
- 1.4 MGD
- NPDES permit
- OH0020168
- Effective
- Permit expires
- April 2027
- Population served
- 3,151
- CWNS 2022
Millersburg WWTP is a publicly owned wastewater treatment works in Millersburg, Holmes County, Ohio treating an average of 0.43 million gallons per day against a permitted design capacity of 1.4 MGD, serving about 3,151 residents. Treatment on site includes clarifiers, uncovered lagoons, carrousels / oxidation ditches. It discharges under NPDES permit OH0020168 (effective), which expires in April 2027, with 9 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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Uncovered lagoons
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Carrousels / oxidation ditches
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Compliance snapshot (last 3 years)
- Total violations
- 9
- Effluent violations
- 9
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Millersburg WWTP.
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Nearby wastewater treatment plants in Ohio
Millersburg · 4 mi away
0.0028 MGD
Killbuck · 5 mi away
0.12 MGD
Millersburg · 5 mi away
0.0076 MGD
Berlin · 6 mi away
0.26 MGD
Millersburg · 6 mi away
0.0073 MGD
Charm · 6 mi away
0.00065 MGD
Holmesville · 7 mi away
0.03 MGD
Fredericksburg · 9 mi away
0.02 MGD
Millersburg 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.