Ansonia Water Pollution Control Facility
Ansonia, CT · New Haven County · Publicly Owned Treatment Works
- Average flow
- 1.3 MGD
- Design flow
- 3.5 MGD
- NPDES permit
- CT0100013
- Administratively continued
- Permit expires
- November 2022
- Population served
- 18,815
- CWNS 2022
Ansonia Water Pollution Control Facility is a publicly owned wastewater treatment works in Ansonia, New Haven County, Connecticut treating an average of 1.3 million gallons per day against a permitted design capacity of 3.5 MGD, serving about 18,815 residents. It discharges under NPDES permit CT0100013 (administratively continued), which expires in November 2022, with 8 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 8
- Effluent violations
- 8
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
9 verified contacts for Ansonia Water Pollution Control Facility, with validated emails and direct phone numbers.
Unlock 9 verified contacts (6 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Ansonia Water Pollution Control Facility, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Connecticut
Shelton · 1 mi away
1.6 MGD
Seymour · 2 mi away
0.89 MGD
Beacon Falls · 7 mi away
0.28 MGD
Milford · 8 mi away
4.5 MGD
Stratford · 11 mi away
5.02 MGD
Newtown · 12 mi away
0.3 MGD
Bridgeport · 12 mi away
4.1 MGD
Bridgeport · 14 mi away
16.7 MGD
Ansonia 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 9, 2025.