Marlborough DPW Water Division East Plt
Marlborough, MA · Middlesex County · Publicly Owned Treatment Works
- Average flow
- 2.04 MGD
- Design flow
- 5.5 MGD
- NPDES permit
- MA0100498
- Effective
- Permit expires
- March 2027
- Population served
- —
- CWNS 2022
Marlborough DPW Water Division East Plt is a publicly owned wastewater treatment plant in Marlborough, Middlesex County, Massachusetts treating an average of 2.04 million gallons per day against a permitted design capacity of 5.5 MGD. Treatment on site includes clarifiers. It discharges under NPDES permit MA0100498 (effective), which expires in March 2027, with 13 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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Compliance snapshot (last 3 years)
- Total violations
- 13
- Effluent violations
- 13
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
24 verified contacts for Marlborough DPW Water Division East Plt, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Marlborough DPW Water Division East Plt, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Massachusetts
Hudson · 4 mi away
0.78 MGD
Marlborough · 6 mi away
1.16 MGD
Wayland · 7 mi away
0.03 MGD
Westborough · 9 mi away
4.17 MGD
Concord · 11 mi away
0.68 MGD
Millbury · 18 mi away
24.1 MGD
Norfolk · 18 mi away
0.18 MGD
Billerica · 20 mi away
2.88 MGD
Marlborough DPW Water Division East Plt: 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.