York Wastewater Treatment Facility
York, ME · York County · Publicly Owned Treatment Works
- Average flow
- 0.67 MGD
- Design flow
- 3 MGD
- NPDES permit
- ME0101222
- Effective
- Permit expires
- March 2030
- Population served
- 9,400
- CWNS 2022
York Wastewater Treatment Facility is a publicly owned wastewater treatment works in York, York County, Maine treating an average of 0.67 million gallons per day against a permitted design capacity of 3 MGD, serving about 9,400 residents. Treatment on site includes biogas balloons, biological treatment, other, biosolids drying, dechlorination, disinfection, chlorine/ chloramine and other unit processes. It discharges under NPDES permit ME0101222 (effective), which expires in March 2030, with 12 recorded violations in the last three years. Planned upgrades on record: biological n removal.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Biogas balloons
Unlock
Biological Treatment, Other
unit processBiosolids Drying
unit processDechlorination
unit processDisinfection, chlorine/ chloramine
unit processScreening
unit processBiological N removal
planned upgradeUnlock exact unit counts →
Compliance snapshot (last 3 years)
- Total violations
- 12
- Effluent violations
- 12
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at York Wastewater Treatment Facility.
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Nearby wastewater treatment plants in Maine
Ogunquit · 6 mi away
0.54 MGD
South Berwick · 11 mi away
0.2 MGD
Kennebunkport · 14 mi away
0.26 MGD
Sanford · 17 mi away
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Biddeford · 22 mi away
0.0048 MGD
Old Orchard Beach · 24 mi away
0.9 MGD
Cape Elizabeth · 34 mi away
0.14 MGD
Limerick · 36 mi away
0.11 MGD
York 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 6, 2025.