Who issues NPDES permits in Vermont?

Vermont Department of Environmental Conservation issues and enforces NPDES permits for wastewater discharges in Vermont. Klarifi tracks 64 permits held by publicly owned treatment plants in the state.

How many NPDES permits in Vermont are expired or administratively continued?

9 permits are administratively continued (the plant applied for renewal and the old permit stays in force) and 46 are recorded as expired, out of 64 permits tracked. 9 are effective.

How many Vermont wastewater permits come up for renewal soon?

2 in 2026, 5 in 2027 and 3 in 2028. Each year has its own renewal calendar with the plants listed.

How do I look up an NPDES permit number?

Enter the permit number (two letters and seven characters, for example TX0021873) or the plant name in the lookup on the NPDES page; each result opens the plant profile with status, expiry, design flow and the three-year violation count.

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NPDES permits in Vermont

Name: NPDES permits held by wastewater treatment plants in Vermont
Creator: Klarifi
License: https://klarifi.io/terms-of-service

64 permits held by publicly owned wastewater treatment plants · issued by VT DEC

Effective

Administratively continued

Expired

Total tracked

Vermont Department of Environmental Conservation (VT DEC) runs the NPDES program in Vermont under delegation from EPA Region 1, issuing and enforcing the discharge permits listed here. Klarifi tracks 64 permits held by publicly owned treatment plants in the state, with status, expiry, design flow and three-year compliance for each. Agency website →

An NPDES permit runs for five years. To keep discharging, a plant must apply for renewal at least 180 days before the expiry date, and the renewed permit usually arrives with tighter effluent limits, new monitoring requirements or a compliance schedule. That is why the year a permit expires is the year a plant starts budgeting for upgrades: nutrient removal, disinfection, capacity or controls.

Permit renewals by year

2026: 2 permits

2027: 5 permits →

2028: 3 permits

2029: 1 permits

Largest permit holders in Vermont

The 25 largest publicly owned wastewater treatment plants in Vermont by permitted design flow, with NPDES permit number, status and expiry. Source: EPA ICIS-NPDES via Klarifi.
Facility	City	Avg flow (MGD)	Design (MGD)	NPDES permit	Status	Expires	Violations (3y)
Bennington Wastewater Treatment Facility	Bennington	2.53	—	VT0100021	Effective	Jun 2029	7
St Albans City	St Albans	1.77	—	VT0100323	Expired	Sep 2022	18
Essex Junction Wastewater Treatment Facility	Essex Junction	1.67	—	VT0100111	Administratively continued	Jun 2026	2
Montpelier Wastewater Treatment Facility	Montpelier	1.22	—	VT0100196	Administratively continued	Sep 2022	0
St Johnsbury	St Johnsbury	0.95	—	VT0100579	Expired	Mar 2023	18
Springfield Wastewater Treatment Facility	Springfield	0.6	—	VT0100374	Administratively continued	Sep 2020	18
Winooski Sewage Treatment Plant	Winooski	0.46	—	VT0100510	Administratively continued	Jun 2026	0
Waterbury WWTP	Waterbury	0.39	—	VT0100463	Expired	Dec 2025	1
Northfield Wastewater Treatment Facility	Northfield	0.33	—	VT0100242	Expired	Sep 2025	18
Stowe WPCF	Stowe	0.28	—	VT0100455	Expired	Sep 2025	85
Champlain Water District	So Burlington	0.25	—	VT0020729	Expired	Mar 2016	1
Milton W P C	Milton	0.25	—	VT0100684	Expired	Jun 2023	0
Morrisville WPCF	Morrisville	0.23	—	VT0100480	Expired	Jun 2023	1
Wastewater Treatment Facility #2	Shelburne	0.23	—	VT0100820	Expired	Dec 2022	43
Brandon WWTF	Brandon	0.22	—	VT0100056	Effective	Mar 2027	12
Swanton Village Wastewater Treatment Facility	Swanton	0.22	—	VT0100501	Expired	Jun 2023	13
Manchester Town Water & Sewer Dept	Manchester	0.18	—	VT0100170	Expired	Sep 2023	0
Randolph	Randolph	0.17	—	VT0100285	Expired	Sep 2020	240
Wastewater Treatment Facility No 1	Shelburne	0.17	—	VT0100331	Administratively continued	Sep 2022	25
Castleton Wastewater Treatment Facility	Castleton	0.17	—	VT0100897	Expired	Jun 2024	0
West Rutland	West Rutland	0.13	—	VT0100714	Effective	Sep 2027	2
Hinesburg Wastewater Treatment Facility	Hinesburg	0.11	—	VT0101028	Effective	Sep 2028	71
Hartford - Quechee	Hartford	0.11	—	VT0100978	Expired	Sep 2024	72
Ludlow Wastewater Treatment Facility	Ludlow	0.1	—	VT0100145	Expired	Dec 2019	24
Proctor Wastewater Treatment Facility	Proctor	0.08	—	VT0100528	Effective	Dec 2027	25

All 64 plants in Vermont →

NPDES permits in Vermont: 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.

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