Salisbury Wastewater Treatment Facility
125 Elm St, Salisbury, MA 01952 · Essex County · Publicly Owned Treatment Works
- Average flow
- 0.73 MGD
- Design flow
- 1.3 MGD
- NPDES permit
- MA0102873
- Administratively continued
- Permit expires
- January 2021
- Population served
- 6,401
- CWNS 2022
Salisbury Wastewater Treatment Facility is a publicly owned wastewater treatment works in Salisbury, Essex County, Massachusetts treating an average of 0.73 million gallons per day against a permitted design capacity of 1.3 MGD, serving about 6,401 residents. It discharges under NPDES permit MA0102873 (administratively continued), which expires in January 2021, with 14 recorded violations in the last three years. EPA has recorded 5 formal enforcement actions naming the plant, the latest in August 2023.
Treatment technology
10 treatment structures and unit processes identified at Salisbury Wastewater Treatment Facility.
Available with a free Klarifi account
See the full treatment train at Salisbury Wastewater Treatment Facility: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 14
- Effluent violations
- 14
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 Salisbury Wastewater Treatment Facility in EPA's ICIS system.
- Formal actions
- 5
- 1 since FY2020
- Penalties assessed
- $1,200
- all cases
- Compliance actions
- $5.8M
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Aug 2023
SALISBURY TOWN OF
Administrative order · CWA, NPDES Permit Violations · Final Order No Penalty · Compliance actions $300,000
EPA's description of the case:
“The Town is in violation of stringent, WQ-based effluent limits for ammonia nitrogen, copper, and nickel. The Order requires the Town to complete a study to evaluate the feasibility of only…”
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Source: EPA ECHO, civil enforcement case 01-2016-2007.
Full case history with a free Klarifi account
Every action against Salisbury Wastewater Treatment Facility with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
Decision-makers at Salisbury Wastewater Treatment Facility.
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Nearby wastewater treatment plants in Massachusetts
Newburyport · 2 mi away
1.52 MGD
Merrimac · 5 mi away
0.36 MGD
Ipswich · 11 mi away
0.66 MGD
Manchester · 19 mi away
0.44 MGD
Salem · 22 mi away
21.66 MGD
Billerica · 26 mi away
3.3 MGD
Winthrop · 34 mi away
270.96 MGD
Concord · 34 mi away
0.83 MGD
Salisbury Wastewater Treatment 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 October 26, 2026; facility record last updated October 9, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Lift station · Sludge dewatering · all terms