Spencer Wastewater Treatment Plant
69 West Main Street, Spencer, MA 01562 · Worcester County · Publicly Owned Treatment Works
- Average flow
- 0.66 MGD
- Design flow
- —
- NPDES permit
- MAG590010
- Effective
- Permit expires
- October 2027
- Population served
- 4,749
- CWNS 2022
Spencer Wastewater Treatment Plant is a publicly owned wastewater treatment works in Spencer, Worcester County, Massachusetts treating an average of 0.66 million gallons per day, serving about 4,749 residents. It discharges under NPDES permit MAG590010 (effective), which expires in October 2027, with 20 recorded violations in the last three years. EPA has recorded 4 formal enforcement actions naming the plant, the latest in June 2023.
Treatment technology
10 treatment structures and unit processes identified, 2 planned upgrades on record at Spencer Wastewater Treatment Plant.
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See the full treatment train at Spencer Wastewater Treatment Plant: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 20
- Effluent violations
- 20
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 Spencer Wastewater Treatment Plant in EPA's ICIS system.
- Formal actions
- 4
- 1 since FY2020
- Compliance actions
- $7.3M
- required by EPA orders
- EPA inspections
- 1
- latest Jan 2003
Latest case · Jun 2023
SPENCER WASTEWATER TREATMENT PLANT
Administrative order · CWA, NPDES Permit Violations · Final Order Issued
EPA's description of the case:
“On June 6, 2023, EPA issued a Clean Water Act Administrative Order (AO) to the Town of Spencer, Massachusetts that addresses the Town?s violations of the total copper discharge limit in its NPDES…”
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Source: EPA ECHO, civil enforcement case 01-2023-2026.
Full case history with a free Klarifi account
Every action against Spencer Wastewater Treatment Plant with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
6 verified contacts for Spencer Wastewater Treatment Plant, with validated emails and direct phone numbers.
Unlock 6 verified contacts (3 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Spencer Wastewater Treatment Plant, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Massachusetts
North Brookfield · 3 mi away
0.4 MGD
Leicester · 5 mi away
0.13 MGD
Charlton · 6 mi away
0.41 MGD
North Oxford · 7 mi away
0.26 MGD
Hardwick · 10 mi away
0.02 MGD
Gilbertville · 11 mi away
0.08 MGD
Millbury · 12 mi away
30.02 MGD
Palmer (three Rivers) · 18 mi away
1.37 MGD
Spencer Wastewater Treatment Plant: 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 November 7, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Ozonation · Activated sludge · all terms