Walnut Creek WWTP
Millersburg, OH · Holmes County · Publicly Owned Treatment Works
- Average flow
- 0.11 MGD
- Design flow
- 0.4 MGD
- NPDES permit
- OH0102903
- Effective
- Permit expires
- December 2026
- Population served
- 358
- CWNS 2022
Walnut Creek WWTP is a publicly owned wastewater treatment works in Millersburg, Holmes County, Ohio treating an average of 0.11 million gallons per day against a permitted design capacity of 0.4 MGD, serving about 358 residents. It discharges under NPDES permit OH0102903 (effective), which expires in December 2026, with 65 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
- 65
- Effluent violations
- 65
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Walnut Creek WWTP.
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Nearby wastewater treatment plants in Ohio
Charm · 5 mi away
0.00065 MGD
Sugarcreek · 5 mi away
0.2 MGD
Berlin · 5 mi away
0.26 MGD
Baltic · 5 mi away
—
Mount Hope · 7 mi away
0.02 MGD
Millersburg · 9 mi away
0.0028 MGD
Strasburg · 11 mi away
0.27 MGD
Beach City · 11 mi away
0.11 MGD
Walnut Creek 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 September 29, 2025.