Machias Wastewater Treatment Facility
33 Kilton Lane, Machias, ME 04654 · Washington County · Publicly Owned Treatment Works
- Average flow
- 0.21 MGD
- Design flow
- 0.37 MGD
- NPDES permit
- ME0100323
- Administratively continued
- Permit expires
- March 2021
- Population served
- 1,335
- CWNS 2022
Machias Wastewater Treatment Facility is a publicly owned wastewater treatment works in Machias, Washington County, Maine treating an average of 0.21 million gallons per day against a permitted design capacity of 0.37 MGD, serving about 1,335 residents. It discharges under NPDES permit ME0100323 (administratively continued), which expires in March 2021, with 2 recorded violations in the last three years.
Treatment technology
6 treatment structures and unit processes identified at Machias Wastewater Treatment Facility.
Available with a free Klarifi account
See the full treatment train at Machias Wastewater Treatment Facility: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 2
- Effluent violations
- 2
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Machias Wastewater Treatment Facility.
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Nearby wastewater treatment plants in Maine
East Machias · 3 mi away
0.0034 MGD
Whitneyville · 3 mi away
0.0021 MGD
Milbridge · 24 mi away
0.03 MGD
Lubec · 25 mi away
0.03 MGD
Perry · 25 mi away
0.02 MGD
Eastport · 26 mi away
0.03 MGD
Eastport · 26 mi away
0.12 MGD
Perry · 26 mi away
0.07 MGD
Machias 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 · Anaerobic digester · Lift station · all terms