Washington County, Maine — public water systems

109 active public water systems serve Washington County, reporting 22.3K people served.

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

Active systems

109

Population served

22.3K

Community systems

Groundwater share

98.2%

Water systems in Washington County

Active public water systems in Washington County, Maine
#	Water system	County	Population served	Type	Source
1	Calais Water Dept	Washington	2,775	Community	Groundwater
2	Passamaquoddy Water District	Washington	2,125	Community	Surface water
3	Lubec Water District	Washington	1,775	Community	Groundwater
4	Baileyville Utilities District	Washington	1,688	Community	Groundwater
5	Machias Water Company	Washington	1,390	Community	Groundwater
6	Indian Township Tribal Water System	Washington	535	Community	Groundwater
7	Washington Academy #1	Washington	425	Non-transient non-community	Groundwater
8	Washington Academy #2	Washington	425	Non-transient non-community	Groundwater
9	Milbridge Water District	Washington	405	Community	Groundwater
10	Washington County Community College #3	Washington	400	Non-transient non-community	Groundwater
11	Calais High School	Washington	390	Non-transient non-community	Groundwater
12	Danforth Water District	Washington	373	Community	Groundwater
13	Causeway Commons	Washington	365	Transient non-community	Groundwater
14	Hilltop Campground	Washington	325	Transient non-community	Groundwater
15	Quantabacook Water District	Washington	303	Community	Groundwater
16	Keenes Lake Family Campground	Washington	277	Transient non-community	Groundwater
17	St Croix Country Club Inc.	Washington	264	Transient non-community	Groundwater
18	Msu 103 Jonesport Elem/Jbhs	Washington	237	Non-transient non-community	Groundwater
19	Aos 96 Elm Street School	Washington	230	Non-transient non-community	Groundwater
20	Pleasant Lake Campground #1	Washington	227	Transient non-community	Groundwater
21	New Friendly Restaurant	Washington	210	Transient non-community	Groundwater
22	Down East Community Hospital	Washington	205	Non-transient non-community	Groundwater
23	Nook & Cranny Restaurant	Washington	204	Transient non-community	Groundwater
24	Greenland Cove Campground	Washington	203	Transient non-community	Groundwater
25	Sipayik Elementary School	Washington	187	Non-transient non-community	Groundwater
26	Sunset Point Campground	Washington	180	Transient non-community	Groundwater
27	Flagpole View Cabins & Liberty Kitchen	Washington	175	Transient non-community	Groundwater
28	Addison Point Water District	Washington	168	Community	Groundwater
29	Msad 37 Milbridge Elementary School	Washington	158	Non-transient non-community	Groundwater
30	Baptist Youth Camp	Washington	157	Transient non-community	Groundwater
31	Msad 37 Harrington Elem School	Washington	151	Non-transient non-community	Groundwater
32	Washington County Community College #2	Washington	150	Non-transient non-community	Groundwater
33	Pleasant Lake Campground #2	Washington	148	Transient non-community	Groundwater
34	Aos 90 Princeton Elementary School	Washington	138	Non-transient non-community	Groundwater
35	Down East Health Center	Washington	135	Transient non-community	Groundwater
36	West Branch Farms	Washington	135	Transient non-community	Groundwater
37	Msad 37 Cherryfield Elementary School	Washington	133	Non-transient non-community	Groundwater
38	Tunkjoy Bakery	Washington	130	Transient non-community	Groundwater
39	Camp Eagle Wing	Washington	130	Transient non-community	Groundwater
40	Rsu 24 Ella Lewis School	Washington	127	Non-transient non-community	Groundwater
41	St Croix Regional Family Health Center	Washington	120	Non-transient non-community	Groundwater
42	Msad 37 Daniel W Merrit School	Washington	118	Non-transient non-community	Groundwater
43	The Meadows Takeout/Ole 98 Tavern	Washington	111	Transient non-community	Groundwater
44	Cottonwood Camping	Washington	102	Transient non-community	Groundwater
45	Cobscook Institute-2	Washington	100	Transient non-community	Groundwater
46	Wymans of Maine-Housing	Washington	100	Transient non-community	Groundwater
47	Washington County Community College #1	Washington	99	Non-transient non-community	Groundwater
48	Coastal Washington Cit	Washington	99	Non-transient non-community	Groundwater
49	Narraguagus Estates	Washington	97	Community	Groundwater
50	Maine Wilderness Camps	Washington	97	Transient non-community	Groundwater