West Unity STP
317 S Liberty St, West Unity, OH 43570 · Williams County · Publicly Owned Treatment Works
- Average flow
- 0.33 MGD
- Design flow
- 0.33 MGD
- NPDES permit
- OH0020303
- Effective
- Permit expires
- November 2027
- Population served
- 1,763
- CWNS 2022
West Unity STP is a publicly owned wastewater treatment works in West Unity, Williams County, Ohio treating an average of 0.33 million gallons per day against a permitted design capacity of 0.33 MGD, serving about 1,763 residents. It discharges under NPDES permit OH0020303 (effective), which expires in November 2027, with 21 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at West Unity STP.
Available with a free Klarifi account
See the full treatment train at West Unity STP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 21
- Effluent violations
- 17
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for West Unity STP, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at West Unity STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Ohio
Pioneer · 4 mi away
0.00043 MGD
Bryan · 5 mi away
0.02 MGD
Fayette · 5 mi away
0.02 MGD
Stryker · 6 mi away
0.02 MGD
Bryan · 7 mi away
0.0055 MGD
Bryan · 7 mi away
0.02 MGD
Archbold · 8 mi away
1.55 MGD
Swanton · 8 mi away
0.46 MGD
West Unity 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 May 23, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Lift station · Sludge dewatering · all terms