Hinsdale Wastewater Treatment Plant
120 River Road, Hinsdale, NH 03451 · Cheshire County · Publicly Owned Treatment Works
- Average flow
- 0.12 MGD
- Design flow
- —
- NPDES permit
- NHG580016
- Effective
- Permit expires
- November 2026
- Population served
- 3,204
- CWNS 2022
Hinsdale Wastewater Treatment Plant is a publicly owned wastewater treatment works in Hinsdale, Cheshire County, New Hampshire treating an average of 0.12 million gallons per day, serving about 3,204 residents. It discharges under NPDES permit NHG580016 (effective), which expires in November 2026, with 6 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at Hinsdale Wastewater Treatment Plant.
Available with a free Klarifi account
See the full treatment train at Hinsdale Wastewater Treatment Plant: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 6
- Effluent violations
- 6
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for Hinsdale Wastewater Treatment Plant, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Hinsdale Wastewater Treatment Plant, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in New Hampshire
Winchester · 5 mi away
0.14 MGD
Swanzey · 10 mi away
0.06 MGD
Westmoreland · 13 mi away
0.01 MGD
Keene · 13 mi away
1.87 MGD
Charlestown · 31 mi away
0.17 MGD
Claremont · 42 mi away
1.39 MGD
Henniker · 44 mi away
0.13 MGD
Milford · 44 mi away
1.14 MGD
Hinsdale Wastewater Treatment Plant: 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 November 28, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Lift station · Sludge dewatering · all terms