Rochester Wastewater Treatment Facility
175 Pickering Rd, Rochester, NH 03839 · Strafford County · Publicly Owned Treatment Works
- Average flow
- 2.88 MGD
- Design flow
- 5 MGD
- NPDES permit
- NH0100668
- Effective
- Permit expires
- June 2028
- Population served
- 17,500
- CWNS 2022
Rochester Wastewater Treatment Facility is a publicly owned wastewater treatment works in Rochester, Strafford County, New Hampshire treating an average of 2.88 million gallons per day against a permitted design capacity of 5 MGD, serving about 17,500 residents. It discharges under NPDES permit NH0100668 (effective), which expires in June 2028, with 3 recorded violations in the last three years. EPA has recorded 2 formal enforcement actions naming the plant, the latest in March 2024.
Treatment technology
3 treatment structures and unit processes identified at Rochester Wastewater Treatment Facility.
Available with a free Klarifi account
See the full treatment train at Rochester Wastewater Treatment Facility: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 3
- Effluent violations
- 3
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 Rochester Wastewater Treatment Facility in EPA's ICIS system.
- Formal actions
- 2
- 2 since FY2020
- Compliance actions
- $23M
- required by EPA orders
- EPA inspections
- 1
- latest Sep 2002
Latest case · Mar 2024
ROCHESTER WWTF
Administrative order · CWA, NPDES Permit Violations · Final Order Issued · Compliance actions $18M
EPA's description of the case:
“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…”
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Source: EPA ECHO, civil enforcement case 01-2024-2034.
Full case history with a free Klarifi account
Every action against Rochester Wastewater Treatment Facility with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Capital improvement projects in Rochester
Rochester's capital improvement plan lists 65 water, sewer and wastewater line items worth $138M starting 2026–2030. The largest budgeted items are shown here.
All water and sewer capital projects in Rochester →
| Project | Budget | Years |
|---|---|---|
| Wastewater Treatment Plant Upgrade to meet Permit | $49,620,000 | 2026–2031 |
| Pump Station Replacement Program | $14,895,735 | 2026–2031 |
| Sewer System Master Plan (SSMP) | $8,827,000 | 2026–2031 |
| WTP Residuals Disposal | $4,000,000 | 2027–2028 |
| Round Pond Augmentation | $4,000,000 | 2026–2026 |
Full project details — scope, funding source, engineering consultant and the decision-makers behind each project — are available in Klarifi, along with similar wastewater capital projects in other cities.
Key contacts
2 verified contacts for Rochester Wastewater Treatment Facility, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Rochester Wastewater Treatment Facility, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in New Hampshire
Durham · 9 mi away
0.72 MGD
Dover · 9 mi away
2.18 MGD
Newmarket · 13 mi away
0.44 MGD
Portsmouth (newington) · 14 mi away
0.11 MGD
Portsmouth · 15 mi away
—
Epping · 16 mi away
0.18 MGD
Portsmouth · 17 mi away
3.28 MGD
Exeter · 18 mi away
1.45 MGD
Rochester 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 15, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Lift station · Sludge dewatering · all terms