Williamstown WPCF
Williamstown, VT · Orange County · Publicly Owned Treatment Works
- Average flow
- 0.07 MGD
- Design flow
- —
- NPDES permit
- VT0100722
- Expired
- Permit expires
- December 2022
- Population served
- 1,814
- CWNS 2022
Williamstown WPCF is a publicly owned wastewater treatment works in Williamstown, Orange County, Vermont treating an average of 0.07 million gallons per day, serving about 1,814 residents. Treatment on site includes aerated lagoons, chemical p removal, dechlorination, disinfection, chlorine/ chloramine, lagoon, aerobic and other unit processes. It discharges under NPDES permit VT0100722 (expired), which expires in December 2022, with 2 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Aerated lagoons
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Chemical P Removal
unit processDechlorination
unit processDisinfection, chlorine/ chloramine
unit processLagoon, Aerobic
unit processScreening
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Compliance snapshot (last 3 years)
- Total violations
- 2
- Effluent violations
- 2
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Williamstown WPCF, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Williamstown WPCF, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Vermont
Northfield · 7 mi away
0.33 MGD
Montpelier · 9 mi away
1.22 MGD
Plainfield · 11 mi away
0.03 MGD
Randolph · 15 mi away
0.17 MGD
Marshfield · 18 mi away
0.02 MGD
Waterbury · 19 mi away
0.39 MGD
Cabot · 21 mi away
0.02 MGD
Bethel · 21 mi away
0.04 MGD
Williamstown 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 20, 2025.