Haydenville WWTP
Logan, OH · Hocking County · Publicly Owned Treatment Works
- Average flow
- 0.02 MGD
- Design flow
- 0.02 MGD
- NPDES permit
- OH0107735
- Effective
- Permit expires
- May 2030
- Population served
- 255
- CWNS 2022
Haydenville WWTP is a publicly owned wastewater treatment works in Logan, Hocking County, Ohio treating an average of 0.02 million gallons per day against a permitted design capacity of 0.02 MGD, serving about 255 residents. Treatment on site includes uncovered lagoons. It discharges under NPDES permit OH0107735 (effective), which expires in May 2030, with 36 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Uncovered lagoons
Unlock
Unlock exact unit counts →
Compliance snapshot (last 3 years)
- Total violations
- 36
- Effluent violations
- 36
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Haydenville WWTP, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at Haydenville WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Ohio
Logan · 5 mi away
0.86 MGD
Nelsonville · 7 mi away
0.57 MGD
Logan · 8 mi away
0.0094 MGD
New Straitsville · 9 mi away
0.03 MGD
Zaleski · 10 mi away
0.0027 MGD
Shawnee · 11 mi away
0.02 MGD
Chauncey · 12 mi away
0.07 MGD
Logan · 12 mi away
0.01 MGD
Haydenville 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 5, 2025.