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Sullivan County, New York — public water systems

At a glance

497 active public water systems are filed under Sullivan County, New York in EPA's SDWIS records, together reporting 131,057 people served. The largest is Monticello Village, which reports serving 8,000 people. 69 are community water systems serving people where they live; the other 428 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

497

Population served

131.1K

Community systems

69

Groundwater share

98.4%

How does Sullivan County compare with other New York counties?

Sullivan County has the 2nd-most active public water systems among the 100 counties listed for active New York systems in EPA records; among the 64 with 3 or more systems, the median has 94. Its systems report 131,057 people served in total, the 20th-largest county figure in the state and 0.7% of the statewide total. The average system here reports serving 264 people, well below the New York average of 2,374. 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 Sullivan County's drinking water come from?

By primary water source, Sullivan County's active systems draw on groundwater (485, 98%), surface water (4, 0.8%), purchased surface water (4, 0.8%) and purchased groundwater (3, 0.6%). Overall, 98% rely mainly on groundwater (including purchased groundwater) and 1.6% on surface water, compared with 91% and 8.5% across New York. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, Monticello Village, draws primarily on surface water.

What kinds of water systems operate in Sullivan County?

Sullivan County's active systems break down as 69 community systems (14%), 25 non-transient non-community systems (5%) and 403 transient non-community systems (81%). 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 (90%), local government (8%), state government (1.2%) and public/private partnership (0.2%).

The 50 largest water systems in Sullivan County

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Active public water systems in Sullivan County, New York
#Water systemCountyPopulation servedTypeSource
1Monticello VillageSullivan8,000CommunitySurface water
2Fallsburg Who-Ls-SfSullivan7,850CommunityGroundwater
3Bethel Woods Center for the ArtsSullivan5,000Transient non-communityGroundwater
4Liberty VillageSullivan3,900CommunitySurface water
5Stevensville+RflSullivan3,250CommunityGroundwater
6Swan in Swan LakeSullivan2,900CommunityGroundwater
7Emerald Green Lake Louise Marie WcSullivan2,400CommunitySurface water
8Livingston Manor WdSullivan1,500CommunityGroundwater
9Wurtsboro VillageSullivan1,400CommunityGroundwater
10Ten Mile River Scout CampsSullivan1,300Transient non-communityGroundwater
11Tri-Valley Central SchoolSullivan1,200Non-transient non-communityGroundwater
12Villa Roma Country ClubSullivan1,150CommunityGroundwater
13The Shma Camps - GirlsSullivan1,100Transient non-communityGroundwater
14The Shma Camps - BoysSullivan1,000Transient non-communityGroundwater
15Roscoe-Rockland WdSullivan1,000CommunityGroundwater
16Adelaar WdSullivan1,000CommunityPurchased surface water
17Mongaup Pond CampgroundSullivan1,000Transient non-communityGroundwater
18Woodbourne Correctional FacilitySullivan997CommunityGroundwater
19Uta Satmar Bungalow ColonySullivan950Transient non-communityGroundwater
20Woodridge VillageSullivan902CommunitySurface water
21New Twin Lakes VillageSullivan900CommunityGroundwater
22Camp Zichron Zvi DovidSullivan895Transient non-communityGroundwater
23Kiamesha Artesian Spring Water CompanySullivan879CommunityGroundwater
24Garnet Health - CatskillsSullivan872Non-transient non-communityGroundwater
25Bloomingburg Water Transportation CoSullivan872CommunityGroundwater
26Camp Bnos SkwereSullivan850Transient non-communityGroundwater
27Callicoon WdSullivan850CommunityGroundwater
28River Valley Estates (Ex Foxcroft) MHPSullivan800CommunityGroundwater
29Camp ChipinawSullivan800Transient non-communityGroundwater
30Narrowsburg WdSullivan800CommunityGroundwater
31Syda Foundation AnugrahaSullivan800Transient non-communityGroundwater
32Sullivan West Lake HuntingtonSullivan800Non-transient non-communityGroundwater
33Smallwood WdSullivan800Transient non-communityGroundwater
34Camp RomimuSullivan800Transient non-communityGroundwater
35Camp RayimSullivan760Transient non-communityGroundwater
36Machne Yakov YosefSullivan750Transient non-communityGroundwater
37Camp Tel YehudahSullivan734Transient non-communityGroundwater
38Swan Lake CampgroundSullivan725Transient non-communityGroundwater
39Sullivan County Human Service ComplexSullivan720CommunityGroundwater
40Camp BnosSullivan700Transient non-communityGroundwater
41Camp Morris - Boys and Girls Day CampSullivan700Transient non-communityPurchased surface water
42Kinnebrook Estates MHPSullivan680CommunityGroundwater
43Camp BaiseinuSullivan650Transient non-communityGroundwater
44Camp Arugath HabosemSullivan600Transient non-communityGroundwater
45Camp AgudahSullivan600Transient non-communityGroundwater
46Syda Foundation Atma NidhiSullivan600Transient non-communityGroundwater
47Parkside EstatesSullivan600CommunityGroundwater
48Yasgur Road CampgroundSullivan600Transient non-communityGroundwater
49Tcfd - HarrisSullivan600CommunityGroundwater
50Camp BelzSullivan545Transient non-communityGroundwater

All other water systems in Sullivan County (447)

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

Sullivan County water systems: frequently asked questions

How many public water systems are in Sullivan County, New York?

EPA's SDWIS records file 497 active public water systems under Sullivan County, New York: 69 community systems (14%), 25 non-transient non-community systems (5%) and 403 transient non-community systems (81%).

Who supplies drinking water in Sullivan County, NY?

The largest community water systems filed under Sullivan County are Monticello Village (8,000 people served), Fallsburg Who-Ls-Sf (7,850 people served) and Liberty Village (3,900 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 Sullivan County's drinking water come from groundwater or surface water?

Of the 497 active public water systems in Sullivan County, 98% draw mainly on groundwater and 1.6% on surface water, counting purchased supplies. The largest system, Monticello Village, uses surface water.

Where can I find a water quality report for Sullivan 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. 69 community systems are filed under Sullivan 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 Sullivan 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 New York 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 Sullivan County, New York”, https://aquacensus.com/water-systems/new-york/sullivan (data as of October 1, 2026).