Westerly Wastewater Treatment Facility
Marlborough, MA · Middlesex County · Publicly Owned Treatment Works
- Average flow
- 1.28 MGD
- Design flow
- 2.89 MGD
- NPDES permit
- 3602885809
- Effective
- Permit expires
- December 2026
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
Unlock
Biological N removal
unit processChemical Addition, Ferric Chloride
unit processChemical P Removal
unit processBiosolids Mechanical Dewatering
unit processBiosolids Thickening
unit processScreening
unit processDisinfection, UV
unit processSuspended Growth, Aerobic
unit processPrimary Clarification or Sedimentation
unit processUnlock exact unit counts →
Compliance snapshot (last 3 years)
- Total violations
- 27
- Effluent violations
- 20
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
17 verified contacts for Westerly Wastewater Treatment Facility, with validated emails and direct phone numbers.
Unlock 17 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Westerly Wastewater Treatment Facility — plus full compliance history and discharge data.
Try Klarifi free+ 13 more verified contacts in Klarifi
Data sourced from public EPA / NPDES records and Klarifi analysis. Last updated May 2025.