Plymouth WWTP
S R 61 North, Plymouth, OH 44865 · Huron County · Publicly Owned Treatment Works
- Average flow
- 0.23 MGD
- Design flow
- 0.45 MGD
- NPDES permit
- OH0027065
- Effective
- Permit expires
- April 2031
- Population served
- 1,707
- CWNS 2022
Plymouth WWTP is a publicly owned wastewater treatment works in Plymouth, Huron County, Ohio treating an average of 0.23 million gallons per day against a permitted design capacity of 0.45 MGD, serving about 1,707 residents. It discharges under NPDES permit OH0027065 (effective), which expires in April 2031, with 0 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at Plymouth WWTP.
Available with a free Klarifi account
See the full treatment train at Plymouth WWTP: 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 Plymouth WWTP.
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Nearby wastewater treatment plants in Ohio
Willard · 2 mi away
0.0057 MGD
Willard · 2 mi away
0.0016 MGD
Shiloh · 4 mi away
0.14 MGD
Willard · 5 mi away
1.81 MGD
Shelby · 7 mi away
1.79 MGD
Greenwich · 8 mi away
0.21 MGD
New Washington · 10 mi away
—
Fitchville · 11 mi away
0.0023 MGD
Plymouth 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 August 19, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biosolids · Filter press · all terms