Attica STP
Heyman Drive, Attica, OH 44807 · Seneca County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 0.2 MGD
- NPDES permit
- OH0023957
- Effective
- Permit expires
- August 2028
- Population served
- 2,119
- CWNS 2022
Attica STP is a publicly owned wastewater treatment works in Attica, Seneca County, Ohio, serving about 2,119 residents. It discharges under NPDES permit OH0023957 (effective), which expires in August 2028, with 0 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Attica STP.
Available with a free Klarifi account
See the full treatment train at Attica STP: structures, unit processes and planned upgrades, with exact unit counts.
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 Attica STP.
No verified contacts on file yet
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Nearby wastewater treatment plants in Ohio
New Washington · 6 mi away
—
Bloomville · 7 mi away
0.08 MGD
Republic · 8 mi away
0.12 MGD
Willard · 9 mi away
1.81 MGD
Willard · 11 mi away
0.0057 MGD
Willard · 11 mi away
0.0016 MGD
Plymouth · 12 mi away
0.23 MGD
Tiffin · 14 mi away
0.0052 MGD
Attica STP: 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 16, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · FOG · Equalization tank · all terms