Southington WPCF
Southington (plantsville), CT · Hartford County · Publicly Owned Treatment Works
- Average flow
- 3.67 MGD
- Design flow
- 7.4 MGD
- NPDES permit
- CT0100536
- Expired
- Permit expires
- September 2023
- Population served
- 43,500
- CWNS 2022
Southington WPCF is a publicly owned wastewater treatment works in Southington (plantsville), Hartford County, Connecticut treating an average of 3.67 million gallons per day against a permitted design capacity of 7.4 MGD, serving about 43,500 residents. Treatment on site includes clarifiers, biogas silos. It discharges under NPDES permit CT0100536 (expired), which expires in September 2023, with 3 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 3
- Effluent violations
- 1
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
24 verified contacts for Southington WPCF, with validated emails and direct phone numbers.
Unlock 24 verified contacts (21 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Southington WPCF, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Connecticut
Cheshire · 3 mi away
1.85 MGD
Meriden · 5 mi away
6.49 MGD
Thomaston · 12 mi away
0.7 MGD
Portland · 12 mi away
0.24 MGD
Beacon Falls · 14 mi away
0.28 MGD
Glastonbury · 17 mi away
2.17 MGD
East Hampton · 17 mi away
1.04 MGD
Canton · 17 mi away
0.49 MGD
Southington WPCF: 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.