Marlborough DPW Water Division East Plt
860 Boston Post Rd, Marlborough, MA 01752 · Middlesex County · Publicly Owned Treatment Works
- Average flow
- 2.77 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 2.77 million gallons per day against a permitted design capacity of 5.5 MGD. It discharges under NPDES permit MA0100498 (effective), which expires in March 2027, with 16 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in December 2009.
Treatment technology
One treatment structure or unit process identified at Marlborough DPW Water Division East Plt.
Available with a free Klarifi account
See the full treatment train at Marlborough DPW Water Division East Plt: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 16
- Effluent violations
- 16
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
EPA enforcement history
Federal civil enforcement cases, compliance inspections and informal actions recorded for Marlborough DPW Water Division East Plt in EPA's ICIS system.
- Formal actions
- 1
- 0 since FY2020
- Compliance actions
- $20M
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Dec 2009
MARLBORO EAST WWTF
Administrative order · CWA, NPDES Permit Violations · Final Order No Penalty · Compliance actions $20M
EPA's description of the case:
“On 12/11/09, EPA issued a CWA administrative order to the City of Marlboro that puts the city on a schedule to upgrade its easterly wastewater treatment plant in order to come into compliance with…”
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Source: EPA ECHO, civil enforcement case 01-2010-2002.
Full case history with a free Klarifi account
Every action against Marlborough DPW Water Division East Plt with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
24 verified contacts for Marlborough DPW Water Division East Plt, with validated emails and direct phone numbers.
Unlock 24 verified contacts (21 more than shown)
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
1.33 MGD
Marlborough · 6 mi away
1.58 MGD
Wayland · 7 mi away
0.03 MGD
Westborough · 9 mi away
4.86 MGD
Concord · 11 mi away
0.83 MGD
Medfield · 14 mi away
0.77 MGD
Millbury · 18 mi away
30.02 MGD
Norfolk · 18 mi away
0.21 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 October 26, 2026; facility record last updated May 19, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biological nutrient removal · Tertiary treatment · all terms