Montville Water Pollution Control Facility
Montville (uncasville), CT · New London County · Publicly Owned Treatment Works
- Average flow
- 0.75 MGD
- Design flow
- 4.5 MGD
- NPDES permit
- CT0100935
- Expired
- Permit expires
- October 2024
- Population served
- 18,478
- CWNS 2022
Montville Water Pollution Control Facility is a publicly owned wastewater treatment works in Montville (uncasville), New London County, Connecticut treating an average of 0.75 million gallons per day against a permitted design capacity of 4.5 MGD, serving about 18,478 residents. Treatment on site includes clarifiers. It discharges under NPDES permit CT0100935 (expired), which expires in October 2024, with 59 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
Unlock
Unlock exact unit counts →
Compliance snapshot (last 3 years)
- Total violations
- 59
- Effluent violations
- 59
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
5 verified contacts for Montville Water Pollution Control Facility, with validated emails and direct phone numbers.
Unlock 5 verified contacts (2 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Montville Water Pollution Control Facility, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Connecticut
New London · 7 mi away
4.66 MGD
Ledyard · 7 mi away
0.08 MGD
Mystic · 9 mi away
0.42 MGD
Baltic · 12 mi away
0.07 MGD
Stonington · 12 mi away
0.21 MGD
Deep River · 18 mi away
0.18 MGD
Plainfield · 18 mi away
0.27 MGD
East Haddam · 19 mi away
0.01 MGD
Montville Water Pollution Control 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 September 11, 2026; facility record last updated February 16, 2025.