Claremont Wastewater Treatment Facility
338 Plains Road, Claremont, NH 03743 · Sullivan County · Publicly Owned Treatment Works
- Average flow
- 1.39 MGD
- Design flow
- 3.9 MGD
- NPDES permit
- NH0101257
- Administratively continued
- Permit expires
- September 2021
- Population served
- 13,595
- CWNS 2022
Claremont Wastewater Treatment Facility is a publicly owned wastewater treatment works in Claremont, Sullivan County, New Hampshire treating an average of 1.39 million gallons per day against a permitted design capacity of 3.9 MGD, serving about 13,595 residents. It discharges under NPDES permit NH0101257 (administratively continued), which expires in September 2021, with 0 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in October 2006.
Treatment technology
2 treatment structures and unit processes identified at Claremont Wastewater Treatment Facility.
Available with a free Klarifi account
See the full treatment train at Claremont Wastewater Treatment Facility: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 0
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
EPA enforcement history
Federal civil enforcement cases, compliance inspections and informal actions recorded for Claremont Wastewater Treatment Facility in EPA's ICIS system.
- Formal actions
- 1
- 0 since FY2020
- Compliance actions
- $50,000
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Oct 2006
CLAREMONT NH POTW
Administrative order · CWA, NPDES Permit Violations · Final Order No Penalty · Compliance actions $50,000
Source: EPA ECHO, civil enforcement case 01-2002-0178.
Full case history with a free Klarifi account
Every action against Claremont Wastewater Treatment Facility with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
Decision-makers at Claremont Wastewater Treatment Facility.
No verified contacts on file yet
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Nearby wastewater treatment plants in New Hampshire
Charlestown · 12 mi away
0.17 MGD
Sunapee · 13 mi away
0.3 MGD
Lebanon · 17 mi away
1.15 MGD
Hanover · 22 mi away
1.11 MGD
Westmoreland · 29 mi away
0.01 MGD
Henniker · 32 mi away
0.13 MGD
Keene · 35 mi away
1.87 MGD
Bristol · 36 mi away
0.2 MGD
Claremont Wastewater Treatment 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 March 2, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Anaerobic digester · Lift station · all terms