Northumberland Village Water Pollution Control Facility
70 Main Street, Groveton, NH 03582 · Coos County · Publicly Owned Treatment Works
- Average flow
- 0.04 MGD
- Design flow
- —
- NPDES permit
- NHG581206
- Effective
- Permit expires
- November 2026
- Population served
- 334
- CWNS 2022
Northumberland Village Water Pollution Control Facility is a publicly owned wastewater treatment works in Groveton, Coos County, New Hampshire treating an average of 0.04 million gallons per day, serving about 334 residents. It discharges under NPDES permit NHG581206 (effective), which expires in November 2026, with 25 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at Northumberland Village Water Pollution Control Facility.
Available with a free Klarifi account
See the full treatment train at Northumberland Village Water Pollution Control Facility: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 25
- Effluent violations
- 25
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Northumberland Village Water Pollution Control Facility, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at Northumberland Village Water Pollution Control Facility, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in New Hampshire
Northumberland · 1 mi away
0.09 MGD
Lancaster · 8 mi away
0.0034 MGD
Lancaster · 8 mi away
0.68 MGD
North Stratford · 12 mi away
0.02 MGD
Whitefield · 16 mi away
0.13 MGD
Berlin · 19 mi away
1.75 MGD
Colebrook · 21 mi away
0.28 MGD
Littleton · 24 mi away
0.55 MGD
Northumberland Village Water Pollution Control Facility: 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 8, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Anaerobic digester · Lift station · all terms