Mystic WPCF
Mystic, CT · New London County · Publicly Owned Treatment Works
- Average flow
- 0.42 MGD
- Design flow
- 0.88 MGD
- NPDES permit
- CT0100544
- Administratively continued
- Permit expires
- August 2022
- Population served
- 5,341
- CWNS 2022
Mystic WPCF is a publicly owned wastewater treatment works in Mystic, New London County, Connecticut treating an average of 0.42 million gallons per day against a permitted design capacity of 0.88 MGD, serving about 5,341 residents. Treatment on site includes biogas silos, biogas balloons. It discharges under NPDES permit CT0100544 (administratively continued), which expires in August 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.
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
6 verified contacts for Mystic WPCF, with validated emails and direct phone numbers.
Unlock 6 verified contacts (3 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Mystic WPCF, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Connecticut
Stonington · 3 mi away
0.21 MGD
Ledyard · 6 mi away
0.08 MGD
New London · 7 mi away
4.66 MGD
Montville (uncasville) · 9 mi away
0.75 MGD
Baltic · 19 mi away
0.07 MGD
Plainfield · 22 mi away
0.27 MGD
Deep River · 25 mi away
0.18 MGD
Plainfield · 26 mi away
0.35 MGD
Mystic 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 November 28, 2025.