Deer Island Wastewater Treatment Facility
Winthrop, MA · Suffolk County · Publicly Owned Treatment Works
- Average flow
- 249.63 MGD
- Design flow
- 480 MGD
- NPDES permit
- 20027916
- ADC
- Permit expires
- July 2005
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Biogas silos
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Biogas balloons
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Disinfection, chlorine/ chloramine
unit processBiosolids Anaerobic Digestion with Energy Recovery
unit processBiosolids Chemical Addition
unit processBiosolids Drying
unit processBiosolids Mechanical Dewatering
unit processBiosolids Thickening
unit processDechlorination
unit processScreening
unit processPrimary Clarification or Sedimentation
unit processSuspended Growth, Aerobic
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Compliance snapshot (last 3 years)
- Total violations
- 2
- Effluent violations
- 1
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
4 verified contacts for Deer Island Wastewater Treatment Facility, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Deer Island Wastewater Treatment Facility — plus full compliance history and discharge data.
Try Klarifi freeData sourced from public EPA / NPDES records and Klarifi analysis. Last updated September 2025.