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Addison County, Vermont — public water systems

At a glance

70 active public water systems are filed under Addison County, Vermont in EPA's SDWIS records, together reporting 32,655 people served. The largest is Middlebury Water Dept, which reports serving 9,379 people. 9 are community water systems serving people where they live; the other 61 are non-community systems, such as schools, workplaces, campgrounds and gas stations with their own supply.

Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.

Active systems

70

Population served

32.7K

Community systems

9

Groundwater share

95.7%

How does Addison County compare with other Vermont counties?

Addison County has the 9th-most active public water systems among the 14 counties listed for active Vermont systems in EPA records; among the 14 with 3 or more systems, the median has 78. Its systems report 32,655 people served in total, the 8th-largest county figure in the state and 5% of the statewide total. The average system here reports serving 467 people, roughly in line with the Vermont average of 477. Population figures are what each system reports; people served by more than one system, such as a wholesaler and the town that buys from it, are counted by each.

Where does Addison County's drinking water come from?

By primary water source, Addison County's active systems draw on groundwater (67, 96%) and surface water (3, 4.3%). Overall, 96% rely mainly on groundwater (including purchased groundwater) and 4.3% on surface water, compared with 93% and 7% across Vermont. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, Middlebury Water Dept, draws primarily on groundwater.

What kinds of water systems operate in Addison County?

Addison County's active systems break down as 9 community systems (13%), 17 non-transient non-community systems (24%) and 44 transient non-community systems (63%). A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. EPA lists their owner types as private (70%), local government (23%), state government (4.3%) and federal government (1.4%).

The 50 largest water systems in Addison County

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Active public water systems in Addison County, Vermont
#Water systemCountyPopulation servedTypeSource
1Middlebury Water DeptAddison9,379CommunityGroundwater
2Vergennes Panton Water DistrictAddison5,100CommunitySurface water
3Tri Town Water DistrictAddison3,800CommunitySurface water
4Bristol Water DeptAddison2,103CommunityGroundwater
5Branbury State ParkAddison963Transient non-communityGroundwater
6Kampersville Campground and StoreAddison864Transient non-communityGroundwater
7East Middlebury Fd 1Addison642CommunityGroundwater
8Long PointAddison530Transient non-communityGroundwater
9Beeman Elementary SchoolAddison489Non-transient non-communityGroundwater
10Waterhouses Marina CampgroundAddison471Transient non-communityGroundwater
11Basin Harbor ClubAddison470Transient non-communitySurface water
12Victory Baptist ChurchAddison424Transient non-communityGroundwater
13Dakin FarmsAddison400Transient non-communityGroundwater
14Middlebury College Breadloaf CampusAddison400Transient non-communityGroundwater
15Monkton Central SchoolAddison359Non-transient non-communityGroundwater
16Starksboro Village Water CoopAddison350CommunityGroundwater
17Middlebury College SnowbowlAddison333Transient non-communityGroundwater
18Keewaydin CampAddison300Transient non-communityGroundwater
19Rivers Bend CampgroundAddison288Transient non-communityGroundwater
20Blueberry Hill Outdoor CenterAddison218Transient non-communityGroundwater
21Lazy Brook MHPAddison205CommunityGroundwater
22Sunray Peace VillageAddison204Transient non-communityGroundwater
23Bingham Memorial SchoolAddison203Non-transient non-communityGroundwater
24Songadeewin of KeewaydinAddison200Transient non-communityGroundwater
25Salisbury SchoolAddison200Non-transient non-communityGroundwater
26Green Mountain Family CampgroundAddison194Transient non-communityGroundwater
27Orwell Village SchoolAddison189Non-transient non-communityGroundwater
28Leicester Central SchoolAddison176Non-transient non-communityGroundwater
29Addison County Home Health and HospiceAddison175Non-transient non-communityGroundwater
30Country Village CampgroundAddison166Transient non-communityGroundwater
31Monkton Town Offices - Methodist ChurchAddison155Transient non-communityGroundwater
32Camp Common GroundAddison154Transient non-communityGroundwater
33Lincoln Community SchoolAddison150Non-transient non-communityGroundwater
34Killooleet CampAddison138Transient non-communityGroundwater
35Brookside MHPAddison135CommunityGroundwater
36Mount Independence State Historic SiteAddison126Transient non-communityGroundwater
37The TillermanAddison124Transient non-communityGroundwater
38Silver Towers CampAddison120Transient non-communityGroundwater
39Weybridge Elementary SchoolAddison114Non-transient non-communityGroundwater
40Ripton Elementary SchoolAddison107Non-transient non-communityGroundwater
41Camp ThorpeAddison95Transient non-communityGroundwater
42Kampersville Campground - Looney LaneAddison88Transient non-communityGroundwater
43Tourterelle Restaurant and InnAddison87Transient non-communityGroundwater
44Kingsland Bay State ParkAddison80Transient non-communityGroundwater
45Sunset LodgeAddison78Transient non-communityGroundwater
46Starry Night CafeAddison77Transient non-communityGroundwater
47Moosalamoo CampgroundAddison76Transient non-communityGroundwater
48Blueberry Hill InnAddison74Transient non-communityGroundwater
49Cameron PropertyAddison73Non-transient non-communityGroundwater
50Point CounterpointAddison66Transient non-communityGroundwater

All other water systems in Addison County (20)

The remaining active systems filed under Addison County, largest first, with the population each reports serving.

Addison County water systems: frequently asked questions

How many public water systems are in Addison County, Vermont?

EPA's SDWIS records file 70 active public water systems under Addison County, Vermont: 9 community systems (13%), 17 non-transient non-community systems (24%) and 44 transient non-community systems (63%).

Who supplies drinking water in Addison County, VT?

The largest community water systems filed under Addison County are Middlebury Water Dept (9,379 people served), Vergennes Panton Water District (5,100 people served) and Tri Town Water District (3,800 people served). Which system serves a particular address depends on its service area, which EPA's SDWIS records do not include; a water bill or the local utility can confirm it.

Does Addison County's drinking water come from groundwater or surface water?

Of the 70 active public water systems in Addison County, 96% draw mainly on groundwater and 4.3% on surface water, counting purchased supplies. The largest system, Middlebury Water Dept, uses groundwater.

Where can I find a water quality report for Addison County?

Each community water system must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1, covering the previous calendar year. 9 community systems are filed under Addison County, so the report to look for is the one from the system that supplies your address.

How can I check violations for a water system in Addison County?

Open the system's profile from the list on this page. Each profile shows the most recent Safe Drinking Water Act violations in EPA's records, with plain-English labels and whether each one is resolved. For current compliance status, EPA ECHO is the primary source.

More Vermont water systems

About this data

Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.

Cite as: AquaCensus, “Public water systems in Addison County, Vermont”, https://aquacensus.com/water-systems/vermont/addison (data as of October 1, 2026).