Upper Blackstone Wastewater Treatment Plant
Millbury, MA · Worcester County · Publicly Owned Treatment Works
- Average flow
- 25.4 MGD
- Design flow
- —
- NPDES permit
- 3602695213
- EXP
- Permit expires
- February 2026
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
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Biological P removal
unit processPrimary Clarification or Sedimentation
unit processSuspended Growth, Aerobic
unit processBiosolids Mechanical Dewatering
unit processBiosolids Incineration
unit processDisinfection, chlorine/ chloramine
unit processBiological N removal
unit processScreening
unit processSuspended Growth, Anaerobic
unit processBiosolids Thickening
unit processDechlorination
unit processUnlock exact unit counts →
Compliance snapshot (last 3 years)
- Total violations
- 26
- Effluent violations
- 8
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
4 verified contacts for Upper Blackstone Wastewater Treatment Plant, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Upper Blackstone Wastewater Treatment Plant — plus full compliance history and discharge data.
Try Klarifi freeData sourced from public EPA / NPDES records and Klarifi analysis. Last updated July 2025.