Washington County, Minnesota — public water systems

193 active public water systems serve Washington County, reporting 260K people served.

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

Active systems

193

Population served

260K

Community systems

Groundwater share

100%

Water systems in Washington County

Active public water systems in Washington County, Minnesota
#	Water system	County	Population served	Type	Source
1	Woodbury	Washington	82,643	Community	Groundwater
2	Cottage Grove	Washington	39,712	Community	Groundwater
3	Oakdale	Washington	28,674	Community	Groundwater
4	Stillwater	Washington	19,462	Community	Groundwater
5	Hugo	Washington	12,047	Community	Groundwater
6	Forest Lake	Washington	11,800	Community	Groundwater
7	Lake Elmo	Washington	10,978	Community	Groundwater
8	Mahtomedi	Washington	8,818	Community	Groundwater
9	Saint Paul Park	Washington	5,427	Community	Groundwater
10	Oak Park Heights	Washington	4,776	Community	Groundwater
11	Newport	Washington	4,000	Community	Groundwater
12	Lakeland Municipal Water	Washington	3,500	Community	Groundwater
13	Bayport	Washington	2,700	Community	Groundwater
14	Cimarron Park	Washington	2,400	Community	Groundwater
15	St. Croix Travel Information Cntr. Mndot	Washington	1,604	Transient non-community	Groundwater
16	Birchwood	Washington	864	Community	Purchased groundwater
17	Shepherd of the Valley Lutheran Church	Washington	850	Transient non-community	Groundwater
18	Green Acres Recreation	Washington	800	Transient non-community	Groundwater
19	Mn Correctional Facility - Stillwater	Washington	781	Community	Groundwater
20	3m Cottage Grove	Washington	740	Non-transient non-community	Groundwater
21	Willernie	Washington	525	Community	Purchased groundwater
22	Lucy Winton Bell Athletic Field	Washington	500	Transient non-community	Groundwater
23	Scandia Elementary School	Washington	425	Non-transient non-community	Groundwater
24	Camp Galilee	Washington	400	Transient non-community	Groundwater
25	Cottage Grove United Church of Christ	Washington	380	Transient non-community	Groundwater
26	Afton Alps	Washington	350	Non-transient non-community	Groundwater
27	Woodlund Mobile Home Park	Washington	330	Community	Groundwater
28	Applewood Hills Golf Course	Washington	300	Transient non-community	Groundwater
29	Brookside Management Company LLC	Washington	300	Transient non-community	Groundwater
30	Hugo Estates	Washington	300	Community	Groundwater
31	Disabled Veterans Rest Camp Assn.	Washington	300	Transient non-community	Groundwater
32	Hidden Pines Ranch	Washington	300	Transient non-community	Groundwater
33	Church of Jesus Christ Latter-Day Saints	Washington	300	Transient non-community	Groundwater
34	River Valley Christian Church	Washington	300	Transient non-community	Groundwater
35	Oneka Ridge Golf	Washington	250	Transient non-community	Groundwater
36	Selma'S Ice Cream Parlour	Washington	250	Transient non-community	Groundwater
37	The Madison	Washington	250	Transient non-community	Groundwater
38	Keystone Wedding & Events	Washington	250	Transient non-community	Groundwater
39	White Bear Yacht Club - Main Club House	Washington	225	Non-transient non-community	Groundwater
40	New Life Evangelical Church	Washington	225	Transient non-community	Groundwater
41	Hosanna Lutheran Church	Washington	205	Non-transient non-community	Groundwater
42	Outing Lodge at Pine Point	Washington	200	Transient non-community	Groundwater
43	Golden Acres Park	Washington	200	Transient non-community	Groundwater
44	Camp Lakamaga	Washington	200	Transient non-community	Groundwater
45	Meister'S Bar & Grill	Washington	200	Transient non-community	Groundwater
46	Hope Glen Farm LLC	Washington	200	Transient non-community	Groundwater
47	Logger'S Trail Golf Club	Washington	200	Transient non-community	Groundwater
48	Tanner'S Brook Golf Club	Washington	200	Transient non-community	Groundwater
49	Oasis Cafe	Washington	200	Transient non-community	Groundwater
50	Mahtomedi Dairy Queen	Washington	200	Transient non-community	Groundwater