Herkimer (v) WWTP
Herkimer, NY · Herkimer County · Publicly Owned Treatment Works
- Average flow
- 0.5 MGD
- Design flow
- 1.7 MGD
- NPDES permit
- NY0020486
- Administratively continued
- Permit expires
- December 2024
- Population served
- 16,331
- CWNS 2022
Herkimer (v) WWTP is a publicly owned wastewater treatment works in Herkimer, Herkimer County, New York treating an average of 0.5 million gallons per day against a permitted design capacity of 1.7 MGD, serving about 16,331 residents. Treatment on site includes clarifiers. It discharges under NPDES permit NY0020486 (administratively continued), which expires in December 2024, with 7 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
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Compliance snapshot (last 3 years)
- Total violations
- 7
- Effluent violations
- 4
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Herkimer (v) WWTP.
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Little Falls · 7 mi away
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Dolgeville · 12 mi away
0.52 MGD
Richfield Springs · 12 mi away
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Nelliston · 20 mi away
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Clinton · 21 mi away
0.8 MGD
Clark Mills · 21 mi away
0.11 MGD
Waterville · 22 mi away
0.1 MGD
Herkimer (v) 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 May 22, 2025.