Nine Mile Creek WWTP
New Richmond, OH · Clermont County · Publicly Owned Treatment Works
- Average flow
- 1.22 MGD
- Design flow
- 3 MGD
- NPDES permit
- OH0049361
- Effective
- Permit expires
- November 2030
- Population served
- 15,708
- CWNS 2022
Nine Mile Creek WWTP is a publicly owned wastewater treatment works in New Richmond, Clermont County, Ohio treating an average of 1.22 million gallons per day against a permitted design capacity of 3 MGD, serving about 15,708 residents. Treatment on site includes clarifiers, carrousels / oxidation ditches. It discharges under NPDES permit OH0049361 (effective), which expires in November 2030, with 3 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 3
- Effluent violations
- 3
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Nine Mile Creek WWTP.
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Nearby wastewater treatment plants in Ohio
New Richmond · 5 mi away
0.34 MGD
Batavia · 8 mi away
3.63 MGD
Amelia · 8 mi away
0.01 MGD
Cincinnati · 8 mi away
21.87 MGD
Milford · 9 mi away
5.43 MGD
Milford · 10 mi away
0.54 MGD
Moscow · 12 mi away
0.0049 MGD
Cincinnati · 14 mi away
5.2 MGD
Nine Mile 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 April 24, 2025.