Hammer Heinsman WWTP
Tiffin, OH · Seneca County · Publicly Owned Treatment Works
- Average flow
- 0.0079 MGD
- Design flow
- 0.03 MGD
- NPDES permit
- OH0039268
- Effective
- Permit expires
- February 2027
- Population served
- 153
- CWNS 2022
Hammer Heinsman WWTP is a publicly owned wastewater treatment works in Tiffin, Seneca County, Ohio treating an average of 0.0079 million gallons per day against a permitted design capacity of 0.03 MGD, serving about 153 residents. It discharges under NPDES permit OH0039268 (effective), which expires in February 2027, with 0 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 0
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Hammer Heinsman WWTP.
No verified contacts on file yet
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Nearby wastewater treatment plants in Ohio
Tiffin · 1 mi away
1.97 MGD
Tiffin · 4 mi away
0.01 MGD
Republic · 6 mi away
—
Bloomville · 8 mi away
0.03 MGD
Bettsville · 10 mi away
0.04 MGD
Sycamore · 12 mi away
0.02 MGD
Fostoria · 14 mi away
0.05 MGD
Attica · 14 mi away
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Hammer Heinsman 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 August 20, 2024.