EPA enforcement actions against wastewater plants in New Hampshire
47 formal actions at 19 of 47 plants · $205,950 in penalties · 6 EPA inspections
EPA's enforcement records list 47 formal civil enforcement cases naming publicly owned wastewater treatment plants in New Hampshire, 8 of them since fiscal year 2020. The cases involve 19 of the state's 47 plants, with $205,950 in penalties assessed. The most common ground is npdes permit violations (24 cases). EPA has inspected 6 plants in the state, 6 inspections in total. Every plant links to its profile, and every case to its report on EPA's ECHO site.
- All plants in New Hampshire
- New Hampshire NPDES permits
- EPA enforcement nationwide
- Analysis: enforcement since 2020
Recent enforcement actions in New Hampshire
| Plant | Date | Type | Law section | Outcome | Penalty | Source |
|---|---|---|---|---|---|---|
| Woodstock WWTF Woodstock | Oct 2026 FY2027 | Administrative order | NPDES Permit Violations | Final Order No Penalty | — | ECHO 01-2027-2001 |
EPA's description: “On October 2, 2026, the Region entered into an administrative order on consent ( AOC ) with the Town of Woodstock, New Hampshire requiring the Town to comply with the monitoring requirements for…” | ||||||
| Milford Wastewater Treatment Facility Milford | Aug 2026 FY2023 | Administrative order | NPDES Permit Violations | Final Order No Penalty | — | ECHO 01-2023-2010 |
EPA's description: “On March 23, 2023, EPA issued a Clean Water Act (CWA) Administrative Order (Order) to the Town of Milford, New Hampshire that provides the Town an extension to two interim milestones in its National…” | ||||||
| Waterville Valley Wastewater Treatment Plant Waterville Valley | Apr 2026 FY2026 | Administrative order | NPDES Permit Violations | Final Order Issued | — | ECHO 01-2026-2022 |
EPA's description: “On April 28, 2026, the Region entered into an administrative order on consent ( AOC ) with the Town of Waterville Valley, New Hampshire memorializing the schedule agreed to between EPA and the Town…” | ||||||
| Waterville Valley Wastewater Treatment Plant Waterville Valley | Aug 2024 FY2024 | Administrative order | NPDES Permit Violations | Final Order No Penalty | — | ECHO 01-2024-2068 |
| Rochester Wastewater Treatment Facility Rochester | Mar 2024 FY2024 | Administrative order | NPDES Permit Violations | Final Order Issued | — | ECHO 01-2024-2034 |
EPA's description: “On March 27, 2024, EPA entered into an administrative order on consent (AOC) with the City of Rochester, New Hampshire which provides a schedule for the City to meet its total phosphorus limit in its…” | ||||||
| Epping Wasterwater Treatment Facility Epping | May 2023 FY2023 | Administrative order | NPDES Permit Violations | Final Order Issued | — | ECHO 01-2023-2022 |
EPA's description: “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…” | ||||||
| Epping Wasterwater Treatment Facility Epping | Apr 2023 FY2016 | Administrative order | NPDES Permit Violations | Final Order No Penalty | — | ECHO 01-2016-2023 |
| Exeter Wastewater Treatment Facility Exeter | Dec 2022 FY2013 | Administrative order | NPDES Discharge without a Permit | Final Order No Penalty | — | ECHO 01-2013-2027 |
| Berlin Pollution Control Facility Berlin | Oct 2022 FY2011 | Administrative order | NPDES Permit Violations | Final Order No Penalty | — | ECHO 01-2011-2501 |
EPA's description: “Region I issued a Clean Water Act (Act) Administrative Order to the City of Berlin, New Hampshire for violations of its National Pollutant Discharge Elimination System (NPDES) permit and Section…” | ||||||
| Leavitt E. Magrath Wastewater Treatment Facility Hampton | Mar 2022 FY2022 | Administrative order | NPDES Permit Violations | Final Order Issued | — | ECHO 01-2022-2010 |
EPA's description: “On March 14, 2021 the Region entered into an administrative order on consent (AOC) with the Town of Hampton, New Hampshire to provide a schedule for it to meet its Total Copper limit in its NPDES…” | ||||||
Full case histories, milestones, violation types and EPA's complete case summaries for every plant are shown with a free Klarifi account. Create one
Largest penalties in New Hampshire
| # | Plant | Date | Type | Outcome | Penalty | Compliance actions | Source |
|---|---|---|---|---|---|---|---|
| 1 | Pierce Island Wastewater Treatment Plant Portsmouth | Oct 2003 FY1989 | Judicial case | Final Order With Pen & Unspecified Cost Recovery | $100,000 | — | ECHO 01-1989-0003 |
| 2 | Keene Wastewater Treatment Facility Keene | Apr 2006 FY2005 | Administrative order | Final Order With Penalty | $58,000 | — | ECHO 01-2005-2001 |
| 3 | Huckleberry Hill Wastewater Treatment Facility Dover | Dec 2013 FY2005 | Administrative order | Final Order With Penalty | $36,000 | — | ECHO 01-2005-2002 |
| 4 | Leavitt E. Magrath Wastewater Treatment Facility Hampton | May 1998 FY1998 | Administrative order | Final Order With Penalty | $5,700 | — | ECHO 01-1998-0055 |
| 5 | Lisbon Wastewater Treatment Facility Lisbon | Jun 1998 FY1997 | Administrative order | Final Order With Penalty | $5,000 | — | ECHO 01-1997-0022 |
| 6 | Town Of Bristol WWTF Bristol | Oct 1997 FY1997 | Administrative order | Final Order With Penalty | $1,000 | — | ECHO 01-1997-0117 |
| 7 | Suncook Wastewater Treatment Facility Allenstown | Jun 1995 FY1995 | Administrative order | Final Order With Penalty | $250 | — | ECHO 01-1995-0075 |
Actions by fiscal year
| Fiscal year | Formal actions | Penalties |
|---|---|---|
| FY2018 | 0 | — |
| FY2019 | 1 | — |
| FY2020 | 0 | — |
| FY2021 | 1 | — |
| FY2022 | 1 | — |
| FY2023 | 2 | — |
| FY2024 | 2 | — |
| FY2025 | 0 | — |
| FY2026 | 1 | — |
| FY2027 | 1 | — |
EPA fiscal years run from 1 October to 30 September. The current year is partial.
EPA enforcement in New Hampshire: questions
How many EPA enforcement actions have been taken against wastewater plants in New Hampshire?
EPA's enforcement records list 47 formal civil enforcement cases naming publicly owned wastewater treatment plants in New Hampshire, 8 of them since fiscal year 2020. They involve 19 of the state's 47 plants. Informal actions such as notices of violation are not counted here.
Which New Hampshire wastewater plant received the largest EPA penalty?
Pierce Island Wastewater Treatment Plant in Portsmouth: $100,000 assessed in fiscal year 1989 (PORTSMOUTH, CITY OF, Final Order With Pen & Unspecified Cost Recovery). Penalties are the amounts EPA records as assessed or agreed, not necessarily what was collected.
What does an EPA administrative order mean for a wastewater plant?
Most cases here are administrative orders under section 309 of the Clean Water Act: EPA finds permit violations, usually effluent limits or discharge without a permit, and orders the plant to return to compliance, often with a corrective action plan, a schedule and sometimes a penalty. Judicial cases go through the Department of Justice and typically end in a consent decree with a capital programme behind it. The latest case in New Hampshire is from Oct 2026.
Enforcement data: EPA ICIS-FE&C civil enforcement cases and ICIS compliance inspections, via ECHO. Penalties are the amounts assessed or agreed in each case as EPA records them. Latest case status in this data: Oct 2026.
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