Sprague Wastewater Treatment Plant
Baltic, CT · New London County · Publicly Owned Treatment Works
- Average flow
- 0.07 MGD
- Design flow
- 0.4 MGD
- NPDES permit
- CT0100978
- Administratively continued
- Permit expires
- August 2021
- Population served
- 2,950
- CWNS 2022
Sprague Wastewater Treatment Plant is a publicly owned wastewater treatment works in Baltic, New London County, Connecticut treating an average of 0.07 million gallons per day against a permitted design capacity of 0.4 MGD, serving about 2,950 residents. It discharges under NPDES permit CT0100978 (administratively continued), which expires in August 2021, with 0 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
- 0
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Sprague Wastewater Treatment Plant, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at Sprague Wastewater Treatment Plant, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Connecticut
Plainfield · 8 mi away
0.27 MGD
Willimantic · 9 mi away
1.31 MGD
Plainfield · 11 mi away
0.35 MGD
Montville (uncasville) · 12 mi away
0.75 MGD
Ledyard · 14 mi away
0.08 MGD
Danielson · 16 mi away
2.95 MGD
Storrs · 17 mi away
1.5 MGD
New London · 19 mi away
4.66 MGD
Sprague Wastewater Treatment Plant: 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 27, 2025.