Epping Wasterwater Treatment Facility
85 Lagoon Road, Epping, NH 03042 · Rockingham County · Publicly Owned Treatment Works
- Average flow
- 0.18 MGD
- Design flow
- —
- NPDES permit
- NHG580012
- Effective
- Permit expires
- November 2026
- Population served
- 1,800
- CWNS 2022
Epping Wasterwater Treatment Facility is a publicly owned wastewater treatment works in Epping, Rockingham County, New Hampshire treating an average of 0.18 million gallons per day, serving about 1,800 residents. It discharges under NPDES permit NHG580012 (effective), which expires in November 2026, with 121 recorded violations in the last three years. EPA has recorded 3 formal enforcement actions naming the plant, the latest in May 2023.
Treatment technology
Treatment structures and unit processes at Epping Wasterwater Treatment Facility.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 121
- Effluent violations
- 26
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 Epping Wasterwater Treatment Facility in EPA's ICIS system.
- Formal actions
- 3
- 1 since FY2020
- Compliance actions
- $8.9M
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · May 2023
EPPING WASTEWATER TREATMENT FACILITY
Administrative order · CWA, NPDES Permit Violations · Final Order Issued · Compliance actions $3.5M
EPA's description of the case:
“On May 11, 2023, the Region issued an administrative order (AO) to the Town of Epping, New Hampshire to cease bypasses at its wastewater treatment plant. The plant discharges upstream of several…”
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Source: EPA ECHO, civil enforcement case 01-2023-2022.
Full case history with a free Klarifi account
Every action against Epping Wasterwater Treatment Facility with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
2 verified contacts for Epping Wasterwater Treatment Facility, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Epping Wasterwater Treatment Facility, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in New Hampshire
Exeter · 7 mi away
1.45 MGD
Newmarket · 7 mi away
0.44 MGD
Durham · 10 mi away
0.72 MGD
Portsmouth · 14 mi away
—
Portsmouth (newington) · 14 mi away
0.11 MGD
Dover · 14 mi away
2.18 MGD
Hampton · 15 mi away
2.24 MGD
Rochester · 16 mi away
2.88 MGD
Epping Wasterwater 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 September 14, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Equalization tank · Centrate · all terms