Amherst Wpcc
Amherst, OH · Lorain County · Publicly Owned Treatment Works
- Average flow
- 1.19 MGD
- Design flow
- 3.5 MGD
- NPDES permit
- OH0021628
- Administratively continued
- Permit expires
- January 2026
- Population served
- 12,681
- CWNS 2022
Amherst Wpcc is a publicly owned wastewater treatment plant in Amherst, Lorain County, Ohio treating an average of 1.19 million gallons per day against a permitted design capacity of 3.5 MGD, serving about 12,681 residents. Treatment on site includes clarifiers, carrousels / oxidation ditches. It discharges under NPDES permit OH0021628 (administratively continued), which expires in January 2026, with 10 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 10
- Effluent violations
- 10
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Amherst Wpcc.
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Nearby wastewater treatment plants in Ohio
Lorain · 2 mi away
1.58 MGD
Elyria · 4 mi away
0.02 MGD
Lorain · 5 mi away
7.69 MGD
Vermilion · 6 mi away
0.76 MGD
Elyria · 7 mi away
5.49 MGD
Oberlin · 8 mi away
1.05 MGD
North Ridgeville · 9 mi away
4.98 MGD
Oberlin · 10 mi away
0.00099 MGD
Amherst Wpcc: 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 April 24, 2025.