Greenwich WWTP
Greenwich, OH · Huron County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 0.2 MGD
- NPDES permit
- OH0020486
- Effective
- Permit expires
- May 2031
- Population served
- 1,396
- CWNS 2022
Greenwich WWTP is a publicly owned wastewater treatment works in Greenwich, Huron County, Ohio, serving about 1,396 residents. Treatment on site includes uncovered lagoons. It discharges under NPDES permit OH0020486 (effective), which expires in May 2031, with 216 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Uncovered lagoons
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Compliance snapshot (last 3 years)
- Total violations
- 216
- Effluent violations
- 75
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Greenwich WWTP, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Greenwich WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Ohio
Fitchville · 5 mi away
0.0023 MGD
Shiloh · 6 mi away
0.09 MGD
New London · 7 mi away
0.24 MGD
Plymouth · 8 mi away
0.18 MGD
Willard · 9 mi away
0.001 MGD
Willard · 9 mi away
0.0048 MGD
Savannah · 9 mi away
—
Shelby · 11 mi away
1.42 MGD
Greenwich 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 September 10, 2026.