Thomaston Waste Water Treatment Facility
Thomaston, ME · Knox County · Publicly Owned Treatment Works
- Average flow
- 0.003 MGD
- Design flow
- 0.46 MGD
- NPDES permit
- ME0100668
- Administratively continued
- Permit expires
- September 2023
- Population served
- 2,739
- CWNS 2022
Thomaston Waste Water Treatment Facility is a publicly owned wastewater treatment works in Thomaston, Knox County, Maine treating an average of 0.003 million gallons per day against a permitted design capacity of 0.46 MGD, serving about 2,739 residents. Treatment on site includes aerated lagoons, uncovered lagoons. It discharges under NPDES permit ME0100668 (administratively continued), which expires in September 2023, with 3 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
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.
Key contacts
Decision-makers at Thomaston Waste Water Treatment Facility.
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Nearby wastewater treatment plants in Maine
Warren · 1 mi away
0.07 MGD
Camden · 11 mi away
0.32 MGD
Nobleboro · 16 mi away
0.002 MGD
North Haven · 17 mi away
0.0046 MGD
Vinalhaven · 18 mi away
0.02 MGD
Islesboro · 18 mi away
0.0024 MGD
Wiscasset · 24 mi away
0.13 MGD
Belfast · 25 mi away
0.42 MGD
Thomaston Waste Water 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 September 11, 2026; facility record last updated February 3, 2025.