Hamler WWTP
Hamler, OH · Henry County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 0.11 MGD
- NPDES permit
- OH0021105
- Effective
- Permit expires
- November 2027
- Population served
- 599
- CWNS 2022
Hamler WWTP is a publicly owned wastewater treatment works in Hamler, Henry County, Ohio, serving about 599 residents. Treatment on site includes uncovered lagoons. It discharges under NPDES permit OH0021105 (effective), which expires in November 2027, with 62 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
- 62
- Effluent violations
- 62
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Hamler WWTP, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at Hamler WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Ohio
Holgate · 6 mi away
—
Deshler · 9 mi away
—
Leipsic · 10 mi away
0.84 MGD
Mcclure · 11 mi away
—
Miller City · 11 mi away
0.0067 MGD
Napoleon · 11 mi away
1.08 MGD
Hoytville · 13 mi away
—
Liberty Center · 13 mi away
0.1 MGD
Hamler 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 November 15, 2025.