Sanford Wastewater Treatment Facility
Sanford, ME · York County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 4.4 MGD
- NPDES permit
- ME0100617
- Administratively continued
- Permit expires
- July 2023
- Population served
- 11,904
- CWNS 2022
Sanford Wastewater Treatment Facility is a publicly owned wastewater treatment works in Sanford, York County, Maine, serving about 11,904 residents. Treatment on site includes uncovered lagoons, carrousels / oxidation ditches, biogas balloons, biosolids mechanical dewatering, disinfection, uv and other unit processes. It discharges under NPDES permit ME0100617 (administratively continued), which expires in July 2023, with 4 recorded violations in the last three years. Planned upgrades on record: biosolids drying.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Uncovered lagoons
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Carrousels / oxidation ditches
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Biogas balloons
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Biosolids Mechanical Dewatering
unit processDisinfection, UV
unit processFiltration
unit processPrimary Clarification or Sedimentation
unit processScreening
unit processSuspended Growth, Aerobic
unit processBiosolids Drying
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Compliance snapshot (last 3 years)
- Total violations
- 4
- 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 Sanford Wastewater Treatment Facility.
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Nearby wastewater treatment plants in Maine
Ogunquit · 12 mi away
0.54 MGD
Kennebunkport · 13 mi away
0.26 MGD
South Berwick · 14 mi away
0.2 MGD
York · 17 mi away
0.67 MGD
Old Orchard Beach · 17 mi away
0.9 MGD
Biddeford · 19 mi away
0.0048 MGD
Limerick · 20 mi away
0.11 MGD
Cape Elizabeth · 27 mi away
0.14 MGD
Sanford 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 March 19, 2025.