Ulster County, New York — public water systems

446 active public water systems serve Ulster County, reporting 133K people served.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO, refreshed quarterly.

Active systems

446

Population served

133K

Community systems

112

Groundwater share

93.9%

Water systems in Ulster County

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Active public water systems in Ulster County, New York
#	Water system	County	Population served	Type	Source
1	Kingston (City) Water District	Ulster	24,000	Community	Surface water
2	New Paltz (Village) Water Dist	Ulster	7,523	Community	Surface water
3	Ulster Water District	Ulster	5,500	Community	Purchased surface water
4	Port Ewen Water District	Ulster	4,500	Community	Surface water
5	Ellenville (Village) Water Dis	Ulster	4,300	Community	Groundwater
6	Saugerties (Village) Water Dis	Ulster	4,200	Community	Surface water
7	Glasco Water District	Ulster	4,071	Community	Purchased surface water
8	Highland Water District	Ulster	4,000	Community	Surface water
9	Marlborough Water District	Ulster	3,248	Community	Purchased surface water
10	Eastern/Ulster Correctional Fa	Ulster	2,578	Community	Groundwater
11	Woodstock Water District	Ulster	2,400	Community	Groundwater
12	Rosendale Water District	Ulster	2,200	Community	Surface water
13	Hurley Water Co	Ulster	2,200	Community	Groundwater
14	Watchtower Farms I	Ulster	1,800	Community	Surface water
15	Greenfield Resort	Ulster	1,750	Community	Groundwater
16	Golden Hill Water District	Ulster	1,600	Community	Purchased surface water
17	Wallkill Water District	Ulster	1,500	Community	Groundwater
18	Onteora High School	Ulster	1,300	Non-transient non-community	Groundwater
19	Wallkill/Shawangunk Correction	Ulster	1,200	Community	Groundwater under influence of surface water
20	Ulster County Community Col	Ulster	997	Non-transient non-community	Groundwater
21	Highland High School	Ulster	900	Non-transient non-community	Groundwater
22	Lake Mohonk Mountain House	Ulster	880	Community	Groundwater under influence of surface water
23	New Paltz (Town) Water Distric	Ulster	810	Community	Purchased surface water
24	Rondout Valley Middle School	Ulster	777	Non-transient non-community	Groundwater
25	Camp Rav Tov-Napanoch	Ulster	750	Transient non-community	Groundwater
26	Napanoch Water District	Ulster	750	Community	Groundwater
27	Forest Park #1	Ulster	750	Community	Groundwater
28	Minnewaska State Park Visitor Center	Ulster	747	Transient non-community	Groundwater
29	Frost Valley Ymca	Ulster	688	Community	Groundwater
30	Jellystone Park at Birchwood Acres	Ulster	650	Transient non-community	Groundwater
31	Rondout Valley High School	Ulster	622	Non-transient non-community	Groundwater
32	Kingsvale Water Co	Ulster	600	Community	Groundwater
33	Kerhonkson Water District	Ulster	600	Community	Groundwater
34	Lenape Elementary School	Ulster	588	Non-transient non-community	Groundwater
35	Camp Rav Tov-Dairyland	Ulster	550	Transient non-community	Groundwater
36	Plattekill Elementary School	Ulster	550	Non-transient non-community	Groundwater
37	Hudson Valley Water Co #1	Ulster	525	Community	Groundwater
38	Camp Bnos Belz	Ulster	500	Transient non-community	Groundwater
39	Wawarsing Wd	Ulster	500	Community	Groundwater
40	Camp Rav Tov-Kerhonkson	Ulster	500	Transient non-community	Groundwater
41	Machne Rav Tov Cherrytown	Ulster	495	Transient non-community	Groundwater
42	Pine Hill Water Company	Ulster	477	Community	Groundwater
43	Camp Rav Tov-Ulster Heights	Ulster	470	Transient non-community	Groundwater
44	Nys Office of Children & Family Services	Ulster	470	Community	Surface water
45	Malden Water District	Ulster	460	Community	Purchased surface water
46	Aloha Home Acres	Ulster	452	Community	Groundwater
47	Phoenicia Water District	Ulster	450	Community	Surface water
48	Ken Wilson State Park	Ulster	450	Transient non-community	Groundwater
49	High Falls Water District	Ulster	426	Community	Purchased surface water
50	Rondout Valley Camping Resort	Ulster	411	Transient non-community	Groundwater