Westfield Wastewater Treatment Plant
149 Neck Rd, Westfield, MA 01085 · Hampden County · Publicly Owned Treatment Works
- Average flow
- 2.95 MGD
- Design flow
- 6.1 MGD
- NPDES permit
- MA0101800
- Effective
- Permit expires
- November 2028
- Population served
- 2,559
- CWNS 2022
Westfield Wastewater Treatment Plant is a publicly owned wastewater treatment works in Westfield, Hampden County, Massachusetts treating an average of 2.95 million gallons per day against a permitted design capacity of 6.1 MGD, serving about 2,559 residents. It discharges under NPDES permit MA0101800 (effective), which expires in November 2028, with 0 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in September 2002.
Treatment technology
13 treatment structures and unit processes identified at Westfield Wastewater Treatment Plant.
Available with a free Klarifi account
See the full treatment train at Westfield Wastewater Treatment Plant: structures, unit processes and planned upgrades, with 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.
EPA enforcement history
Federal civil enforcement cases, compliance inspections and informal actions recorded for Westfield Wastewater Treatment Plant in EPA's ICIS system.
- Formal actions
- 1
- 0 since FY2020
- Compliance actions
- $50,000
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Sep 2002
WESTFIELD MA POTW
Administrative order · CWA, NPDES Permit Violations · Final Order No Penalty · Compliance actions $50,000
Source: EPA ECHO, civil enforcement case 01-2002-0181.
Full case history with a free Klarifi account
Every action against Westfield Wastewater Treatment Plant with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
30 verified contacts for Westfield Wastewater Treatment Plant, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Westfield Wastewater Treatment Plant, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Massachusetts
Woronoco Village · 6 mi away
0.0045 MGD
Holyoke · 8 mi away
6.07 MGD
Russell · 8 mi away
0.06 MGD
Huntington · 11 mi away
0.03 MGD
Northampton · 15 mi away
4.21 MGD
Hadley · 16 mi away
0.32 MGD
Palmer (three Rivers) · 19 mi away
1.37 MGD
Hatfield · 20 mi away
0.15 MGD
Westfield 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 February 27, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Filter press · FOG · all terms