Holyoke Water Pollution Control Facility
Holyoke, MA · Hampden County · Publicly Owned Treatment Works
- Average flow
- 5.02 MGD
- Design flow
- —
- NPDES permit
- MAL101630
- Effective
- Permit expires
- December 2030
- Population served
- 34,070
- CWNS 2022
Holyoke Water Pollution Control Facility is a publicly owned wastewater treatment works in Holyoke, Hampden County, Massachusetts treating an average of 5.02 million gallons per day, serving about 34,070 residents. Treatment on site includes clarifiers, biological n removal, biological p removal, biological treatment, other, biosolids chemical addition and other unit processes. It discharges under NPDES permit MAL101630 (effective), which expires in December 2030, with 4 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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Biological N removal
unit processBiological P removal
unit processBiological Treatment, Other
unit processBiosolids Chemical Addition
unit processBiosolids Incineration
unit processBiosolids Mechanical Dewatering
unit processBiosolids Thickening
unit processDisinfection, chlorine/ chloramine
unit processFlotation
unit processPrimary Clarification or Sedimentation
unit processScreening
unit processSludge Blanket, Anaerobic
unit processSuspended Growth, Aerobic
unit processSuspended Growth, Anaerobic
unit processUnlock exact unit counts →
Compliance snapshot (last 3 years)
- Total violations
- 4
- Effluent violations
- 3
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for Holyoke Water Pollution Control Facility, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Holyoke Water Pollution Control Facility, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Massachusetts
Westfield · 8 mi away
2.4 MGD
Northampton · 8 mi away
3.84 MGD
Hadley · 10 mi away
0.34 MGD
Woronoco Village · 11 mi away
0.004 MGD
Russell · 12 mi away
0.04 MGD
Palmer (three Rivers) · 13 mi away
1.2 MGD
Huntington · 14 mi away
0.03 MGD
Hadley · 14 mi away
3.33 MGD
Holyoke Water Pollution Control 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 May 19, 2025.