Town Of Hopkinton WWTP
Hopkington, NH · Merrimack County · Publicly Owned Treatment Works
- Average flow
- 0.03 MGD
- Design flow
- 0.12 MGD
- NPDES permit
- NHG580579
- Effective
- Permit expires
- November 2026
- Population served
- 628
- CWNS 2022
Town Of Hopkinton WWTP is a publicly owned wastewater treatment works in Hopkington, Merrimack County, New Hampshire treating an average of 0.03 million gallons per day against a permitted design capacity of 0.12 MGD, serving about 628 residents. It discharges under NPDES permit NHG580579 (effective), which expires in November 2026, with 48 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 48
- Effluent violations
- 8
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for Town Of Hopkinton WWTP, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Town Of Hopkinton WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in New Hampshire
Henniker · 7 mi away
0.11 MGD
Concord · 7 mi away
0.18 MGD
Concord · 9 mi away
3.2 MGD
Allenstown · 13 mi away
0.45 MGD
Franklin · 13 mi away
3.53 MGD
Hooksett · 16 mi away
0.68 MGD
Sunapee · 24 mi away
0.22 MGD
Bristol · 26 mi away
0.21 MGD
Town Of Hopkinton 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 August 14, 2024.