Jamestown STP
Jamestown, OH · Greene County · Publicly Owned Treatment Works
- Average flow
- 0.22 MGD
- Design flow
- 0.9 MGD
- NPDES permit
- OH0025879
- Effective
- Permit expires
- April 2030
- Population served
- 4,457
- CWNS 2022
Jamestown STP is a publicly owned wastewater treatment works in Jamestown, Greene County, Ohio treating an average of 0.22 million gallons per day against a permitted design capacity of 0.9 MGD, serving about 4,457 residents. Treatment on site includes clarifiers, uncovered lagoons, carrousels / oxidation ditches. It discharges under NPDES permit OH0025879 (effective), which expires in April 2030, with 38 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
- 38
- Effluent violations
- 38
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Jamestown STP, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at Jamestown STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Ohio
Cedarville · 7 mi away
0.36 MGD
Jeffersonville · 8 mi away
0.28 MGD
Delaware · 10 mi away
4.87 MGD
Cedarville · 11 mi away
—
Yellow Springs · 12 mi away
0.26 MGD
Xenia · 12 mi away
1.47 MGD
Sabina · 12 mi away
0.18 MGD
Xenia · 13 mi away
2.05 MGD
Jamestown STP: 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 22, 2025.