Mattawamkeag WWTF
Mattawamkeag, ME · Penobscot County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 0.09 MGD
- NPDES permit
- ME0102245
- Effective
- Permit expires
- April 2028
- Population served
- 259
- CWNS 2022
Mattawamkeag WWTF is a publicly owned wastewater treatment works in Mattawamkeag, Penobscot County, Maine, serving about 259 residents. Treatment on site includes aerated lagoons, disinfection, chlorine/ chloramine, lagoon, facultative. It discharges under NPDES permit ME0102245 (effective), which expires in April 2028, with 2 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Aerated lagoons
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Disinfection, chlorine/ chloramine
unit processLagoon, Facultative
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Compliance snapshot (last 3 years)
- Total violations
- 2
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Mattawamkeag WWTF.
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Nearby wastewater treatment plants in Maine
Howland · 25 mi away
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Danforth · 26 mi away
0.02 MGD
Milo · 36 mi away
0.08 MGD
Old Town · 41 mi away
0.04 MGD
Old Town · 43 mi away
0.63 MGD
Dover-Foxcroft · 46 mi away
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Veazie · 51 mi away
0.07 MGD
Bangor · 55 mi away
4.38 MGD
Mattawamkeag WWTF: 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 September 11, 2026; facility record last updated January 30, 2025.