Manchester Wastewater Treatment Facility
12 Church Street, Manchester, MA 01944 · Essex County · Publicly Owned Treatment Works
- Average flow
- 0.44 MGD
- Design flow
- —
- NPDES permit
- MAG580043
- Effective
- Permit expires
- November 2026
- Population served
- 3,418
- CWNS 2022
Manchester Wastewater Treatment Facility is a publicly owned wastewater treatment works in Manchester, Essex County, Massachusetts treating an average of 0.44 million gallons per day, serving about 3,418 residents. It discharges under NPDES permit MAG580043 (effective), which expires in November 2026, with 37 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in September 2026.
Treatment technology
6 treatment structures and unit processes identified at Manchester Wastewater Treatment Facility.
Available with a free Klarifi account
See the full treatment train at Manchester Wastewater Treatment Facility: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 37
- Effluent violations
- 37
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 Manchester Wastewater Treatment Facility in EPA's ICIS system.
- Formal actions
- 1
- 1 since FY2020
- Compliance actions
- $20,000
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Sep 2026
MANCHESTER BY THE SEA WWTF
Administrative order · CWA, NPDES Permit Violations · Final Order Issued · Compliance actions $20,000
EPA's description of the case:
“On September 2, 2026, the Region entered into an administrative order on consent ( AOC ) with the Town of Manchester-by-the-Sea, Massachusetts requiring the Town to implement an ambient receiving…”
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Source: EPA ECHO, civil enforcement case 01-2026-2033.
Full case history with a free Klarifi account
Every action against Manchester Wastewater Treatment Facility with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
3 verified contacts for Manchester 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 Manchester Wastewater Treatment Facility, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Massachusetts
Salem · 6 mi away
21.66 MGD
Ipswich · 9 mi away
0.66 MGD
Newburyport · 17 mi away
1.52 MGD
Winthrop · 18 mi away
270.96 MGD
Salisbury · 19 mi away
0.73 MGD
Hull · 20 mi away
1.53 MGD
Merrimac · 21 mi away
0.36 MGD
Cohasset · 23 mi away
0.18 MGD
Manchester 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 November 8, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Lift station · Sludge dewatering · all terms