Hardin-Northern Schools-Hardin-Northern Schools
11589 State Rte 81, Dola, OH 45835 · Hardin County · Publicly Owned Treatment Works
- Average flow
- 0.0014 MGD
- Design flow
- —
- NPDES permit
- OH0132951
- Effective
- Permit expires
- March 2029
- Population served
- —
- CWNS 2022
Hardin-Northern Schools-Hardin-Northern Schools is a publicly owned wastewater treatment plant in Dola, Hardin County, Ohio treating an average of 0.0014 million gallons per day. It discharges under NPDES permit OH0132951 (effective), which expires in March 2029, with 6 recorded violations in the last three years.
Treatment technology
Treatment structures and unit processes at Hardin-Northern Schools-Hardin-Northern Schools.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 6
- Effluent violations
- 6
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Hardin-Northern Schools-Hardin-Northern Schools.
No verified contacts on file yet
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Hardin-Northern Schools-Hardin-Northern Schools: 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 October 26, 2026; facility record last updated August 14, 2024.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Centrate · Ozonation · all terms