Stockbridge W W T P
Stockbridge, MA · Berkshire County · Publicly Owned Treatment Works
- Average flow
- 0.1 MGD
- Design flow
- —
- NPDES permit
- MAG580029
- Effective
- Permit expires
- November 2026
- Population served
- 1,398
- CWNS 2022
Stockbridge W W T P is a publicly owned wastewater treatment plant in Stockbridge, Berkshire County, Massachusetts treating an average of 0.1 million gallons per day, serving about 1,398 residents. Treatment on site includes clarifiers, carrousels / oxidation ditches, biological n removal, biological treatment, other, biologically active filtration (baf) and other unit processes. It discharges under NPDES permit MAG580029 (effective), which expires in November 2026, with 0 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
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Carrousels / oxidation ditches
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Biological N removal
unit processBiological Treatment, Other
unit processBiologically Active Filtration (BAF)
unit processBiosolids Thickening
unit processChemical P Removal
unit processDisinfection, UV
unit processPrimary Clarification or Sedimentation
unit processScreening
unit processUnlock exact unit counts →
Compliance snapshot (last 3 years)
- Total violations
- 0
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for Stockbridge W W T P, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Stockbridge W W T P, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Massachusetts
West Stockbridge · 3 mi away
0.009 MGD
Lee · 4 mi away
0.47 MGD
Lenox · 6 mi away
0.3 MGD
Pittsfield · 9 mi away
7 MGD
Huntington · 23 mi away
0.03 MGD
Russell · 25 mi away
0.04 MGD
Woronoco Village · 27 mi away
0.004 MGD
Williamstown · 31 mi away
2.04 MGD
Stockbridge W W T P: 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 November 28, 2025.