Kennebunkport Wastewater Treatment Facility
Kennebunkport, ME · York County · Publicly Owned Treatment Works
- Average flow
- 0.26 MGD
- Design flow
- 0.7 MGD
- NPDES permit
- ME0101184
- Effective
- Permit expires
- November 2026
- Population served
- 3,700
- CWNS 2022
Kennebunkport Wastewater Treatment Facility is a publicly owned wastewater treatment works in Kennebunkport, York County, Maine treating an average of 0.26 million gallons per day against a permitted design capacity of 0.7 MGD, serving about 3,700 residents. Treatment on site includes biogas balloons, biosolids mechanical dewatering, dechlorination, disinfection, chlorine/ chloramine, screening and other unit processes. It discharges under NPDES permit ME0101184 (effective), which expires in November 2026, with 27 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Biogas balloons
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Biosolids Mechanical Dewatering
unit processDechlorination
unit processDisinfection, chlorine/ chloramine
unit processScreening
unit processSuspended Growth, Aerobic
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Compliance snapshot (last 3 years)
- Total violations
- 27
- Effluent violations
- 15
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Kennebunkport Wastewater Treatment Facility.
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Nearby wastewater treatment plants in Maine
Biddeford · 8 mi away
0.0048 MGD
Ogunquit · 9 mi away
0.54 MGD
Old Orchard Beach · 10 mi away
0.9 MGD
Sanford · 13 mi away
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York · 14 mi away
0.67 MGD
Cape Elizabeth · 19 mi away
0.14 MGD
South Berwick · 19 mi away
0.2 MGD
Westbrook · 24 mi away
2.5 MGD
Kennebunkport 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 September 11, 2026; facility record last updated November 26, 2025.