Celina WWTP
Celina, OH · Mercer County · Publicly Owned Treatment Works
- Average flow
- 1.17 MGD
- Design flow
- 3 MGD
- NPDES permit
- OH0020320
- Effective
- Permit expires
- March 2028
- Population served
- 12,776
- CWNS 2022
Celina WWTP is a publicly owned wastewater treatment works in Celina, Mercer County, Ohio treating an average of 1.17 million gallons per day against a permitted design capacity of 3 MGD, serving about 12,776 residents. Treatment on site includes clarifiers, uncovered lagoons, carrousels / oxidation ditches. It discharges under NPDES permit OH0020320 (effective), which expires in March 2028, with 3 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
Unlock
Uncovered lagoons
Unlock
Carrousels / oxidation ditches
Unlock
Unlock exact unit counts →
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 Celina WWTP.
No verified contacts on file yet
Klarifi verifies plant and municipal decision-makers continuously. Start a free trial to browse contacts at nearby plants and flag this one for verification.
Nearby wastewater treatment plants in Ohio
Coldwater · 4 mi away
—
Celina · 4 mi away
0.04 MGD
Celina · 4 mi away
—
Celina · 7 mi away
—
St Henry · 8 mi away
0.09 MGD
St. Marys · 8 mi away
0.0018 MGD
Chickasaw · 9 mi away
—
Saint Marys · 10 mi away
1.12 MGD
Celina 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 May 23, 2025.