Sunapee, Town Of-WWTP
Sunapee, NH · Sullivan County · Publicly Owned Treatment Works
- Average flow
- 0.22 MGD
- Design flow
- —
- NPDES permit
- NHG580017
- Effective
- Permit expires
- November 2026
- Population served
- —
- CWNS 2022
Sunapee, Town Of-WWTP is a publicly owned wastewater treatment works in Sunapee, Sullivan County, New Hampshire treating an average of 0.22 million gallons per day. Treatment on site includes carrousels / oxidation ditches, biogas balloons. It discharges under NPDES permit NHG580017 (effective), which expires in November 2026, with 27 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
- 27
- Effluent violations
- 15
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
5 verified contacts for Sunapee, Town Of-WWTP, with validated emails and direct phone numbers.
Unlock 5 verified contacts (2 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Sunapee, Town Of-WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in New Hampshire
Claremont · 13 mi away
1.2 MGD
Charlestown · 19 mi away
0.03 MGD
Lebanon · 21 mi away
0.89 MGD
Henniker · 21 mi away
0.11 MGD
Franklin · 23 mi away
3.53 MGD
Hanover · 24 mi away
0.99 MGD
Hopkington · 24 mi away
0.03 MGD
Bristol · 25 mi away
0.21 MGD
Sunapee, Town Of-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 November 29, 2025.