Plainfield Village Sewage Treatment Plant
10 Birch St., Plainfield, CT 06374 · Windham County · Publicly Owned Treatment Works
- Average flow
- 0.36 MGD
- Design flow
- 0.71 MGD
- NPDES permit
- CT0100439
- Administratively continued
- Permit expires
- September 2022
- Population served
- 5,918
- CWNS 2022
Plainfield Village Sewage Treatment Plant is a publicly owned wastewater treatment works in Plainfield, Windham County, Connecticut treating an average of 0.36 million gallons per day against a permitted design capacity of 0.71 MGD, serving about 5,918 residents. It discharges under NPDES permit CT0100439 (administratively continued), which expires in September 2022, with 4 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at Plainfield Village Sewage Treatment Plant.
Available with a free Klarifi account
See the full treatment train at Plainfield Village Sewage Treatment Plant: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 4
- Effluent violations
- 4
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Capital improvement projects in Plainfield
Plainfield's capital improvement plan lists 18 water, sewer and wastewater line items worth $5M starting 2025–2027. The largest budgeted items are shown here.
All water and sewer capital projects in Plainfield →
| Project | Budget | Years |
|---|---|---|
| New Secondary Tank North Plant | $1,990,000 | 2026–2027 |
| Rehab gravity thickener North & Village Plant | $1,900,000 | 2026–2030 |
| Pump Stations Upgrade | $250,000 | 2025–2030 |
| Raising Covered Manholes | $160,000 | 2025–2030 |
| Cutting & Clearing Easements | $160,000 | 2025–2030 |
Full project details — scope, funding source, engineering consultant and the decision-makers behind each project — are available in Klarifi, along with similar wastewater capital projects in other cities.
Key contacts
2 verified contacts for Plainfield Village Sewage Treatment Plant, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Plainfield Village Sewage Treatment Plant, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Connecticut
Plainfield · 4 mi away
0.55 MGD
Baltic · 8 mi away
—
Danielson · 9 mi away
3.4 MGD
Willimantic · 14 mi away
1.64 MGD
Putnam · 16 mi away
1.01 MGD
Ledyard · 16 mi away
0.13 MGD
Montville (uncasville) · 18 mi away
1.25 MGD
Storrs · 20 mi away
1.25 MGD
Plainfield Village Sewage 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 October 26, 2026; facility record last updated February 16, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · WWTP · Biosolids · all terms