Bangor Wastewater Treatment Facility
760 Main Street, Bangor, ME 04401 · Penobscot County · Publicly Owned Treatment Works
- Average flow
- 7.09 MGD
- Design flow
- 18 MGD
- NPDES permit
- ME0100781
- Effective
- Permit expires
- July 2031
- Population served
- 38,856
- CWNS 2022
Bangor Wastewater Treatment Facility is a publicly owned wastewater treatment works in Bangor, Penobscot County, Maine treating an average of 7.09 million gallons per day against a permitted design capacity of 18 MGD, serving about 38,856 residents. It discharges under NPDES permit ME0100781 (effective), which expires in July 2031, with 14 recorded violations in the last three years. EPA has recorded 2 formal enforcement actions naming the plant, the latest in December 2015.
Treatment technology
10 treatment structures and unit processes identified at Bangor Wastewater Treatment Facility.
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See the full treatment train at Bangor Wastewater Treatment Facility: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 14
- Effluent violations
- 10
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 Bangor Wastewater Treatment Facility in EPA's ICIS system.
- Formal actions
- 2
- 0 since FY2020
- Penalties assessed
- $20,000
- all cases
- Compliance actions
- $100M
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Dec 2015
BANGOR CITY OF
Judicial case · CWA, NPDES Permit Violations · Final Order No Penalty · Compliance actions $100M
EPA's description of the case:
“On September 30, 2012, Region 1 referred a civil enforcement action to DOJ regarding an existing consent decree with the City of Bangor, Maine. In 2010, the Region informed the City that, despite its…”
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Source: EPA ECHO, civil enforcement case 01-2012-2039.
Full case history with a free Klarifi account
Every action against Bangor Wastewater Treatment Facility with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
1 verified contact for Bangor 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 Bangor Wastewater Treatment Facility, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Maine
Brewer · 1 mi away
1.47 MGD
Veazie · 5 mi away
0.13 MGD
Old Town · 12 mi away
1.09 MGD
Old Town · 14 mi away
0.04 MGD
Bucksport · 15 mi away
0.31 MGD
Searsport · 23 mi away
0.06 MGD
Newport · 24 mi away
0.22 MGD
Ellsworth · 24 mi away
0.00068 MGD
Bangor 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 4, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Tertiary treatment · Significant industrial user · all terms