Ostrander WWTP
4400 Ostrander Road, Ostrander, OH 43061 · Delaware County · Publicly Owned Treatment Works
- Average flow
- 0.06 MGD
- Design flow
- 0.09 MGD
- NPDES permit
- OH0105929
- Effective
- Permit expires
- June 2029
- Population served
- 1,094
- CWNS 2022
Ostrander WWTP is a publicly owned wastewater treatment works in Ostrander, Delaware County, Ohio treating an average of 0.06 million gallons per day against a permitted design capacity of 0.09 MGD, serving about 1,094 residents. It discharges under NPDES permit OH0105929 (effective), which expires in June 2029, with 6 recorded violations in the last three years.
Treatment technology
Treatment structures and unit processes at Ostrander WWTP.
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 Ostrander WWTP.
No verified contacts on file yet
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Delaware · 8 mi away
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Plain City · 9 mi away
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Marysville · 9 mi away
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Plain City · 11 mi away
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Ostrander 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 October 26, 2026; facility record last updated November 29, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Tertiary treatment · Significant industrial user · all terms