Clackamas County, Oregon — public water systems

235 active public water systems serve Clackamas County, reporting 385.7K people served.

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

Active systems

235

Population served

385.7K

Community systems

Groundwater share

89.4%

Water systems in Clackamas County

Active public water systems in Clackamas County, Oregon
#	Water system	County	Population served	Type	Source
1	Sunrise Water Authority	Clackamas	50,003	Community	Purchased surface water
2	Lake Oswego Municipal Water	Clackamas	40,000	Community	Purchased surface water
3	Oregon City	Clackamas	33,940	Community	Purchased surface water
4	Oak Lodge Water Services	Clackamas	30,000	Community	Purchased surface water
5	Clackamas River Water	Clackamas	29,918	Community	Surface water
6	West Linn, City of	Clackamas	28,000	Community	Purchased surface water
7	Wilsonville, City of	Clackamas	25,915	Community	Surface water
8	Milwaukie, City of	Clackamas	20,946	Community	Groundwater
9	Clackamas River Water - Clairmont	Clackamas	19,928	Community	Purchased surface water
10	Canby Utility	Clackamas	18,754	Community	Surface water
11	Sandy, City of	Clackamas	12,991	Community	Surface water
12	Gladstone, City of	Clackamas	12,121	Community	Purchased surface water
13	Molalla, City of	Clackamas	10,298	Community	Surface water
14	Estacada, City of	Clackamas	5,750	Community	Surface water
15	Rivergrove Water District	Clackamas	4,000	Community	Groundwater
16	Lake Grove Water District	Clackamas	3,100	Community	Purchased surface water
17	Boring Water District No 24	Clackamas	2,500	Community	Groundwater
18	Colton Water District	Clackamas	1,500	Community	Surface water
19	Usfs Timberline Lodge 1	Clackamas	1,500	Non-transient non-community	Groundwater
20	Salmon Valley Water Company	Clackamas	1,500	Community	Groundwater
21	Athey Creek Church	Clackamas	1,000	Transient non-community	Groundwater
22	Rhododendron Wtr Assoc	Clackamas	980	Community	Surface water
23	Southwood Park Water District	Clackamas	900	Community	Groundwater
24	Oprd Milo Mciver State Park	Clackamas	850	Transient non-community	Groundwater
25	Timberline Rim Water Co Inc.	Clackamas	800	Community	Groundwater
26	Mulino Water District	Clackamas	700	Community	Groundwater
27	Stafford Elementary	Clackamas	600	Non-transient non-community	Groundwater
28	Riverbend Mobile Home Park	Clackamas	600	Community	Groundwater
29	Barton Food Mart	Clackamas	570	Transient non-community	Groundwater
30	Big Valley Woods Water Corp	Clackamas	550	Community	Groundwater
31	Meadowbrook Grocery	Clackamas	500	Transient non-community	Groundwater
32	Space Age Sandy	Clackamas	500	Transient non-community	Groundwater
33	Usfs Hoodview Pine Pt	Clackamas	500	Transient non-community	Groundwater
34	Usfs Trillium Lake Cg	Clackamas	500	Transient non-community	Groundwater
35	Ninety-One Elem Sd 91	Clackamas	450	Non-transient non-community	Groundwater
36	Oregon Trail Sd - Kelso Elem	Clackamas	450	Non-transient non-community	Groundwater
37	Carus Elementary	Clackamas	415	Non-transient non-community	Groundwater
38	Riverview Mfgd Home Court	Clackamas	400	Community	Groundwater
39	Oregon Trail Sd - Boring Mid Sch	Clackamas	400	Non-transient non-community	Groundwater
40	Clackamas Co Pks-Metzler Pk #2	Clackamas	400	Transient non-community	Groundwater
41	Clackamas Co Pks-Metzler Pk #1	Clackamas	400	Transient non-community	Groundwater
42	Pioneer Mobile Home Park	Clackamas	400	Community	Groundwater
43	Country Christian School	Clackamas	400	Non-transient non-community	Groundwater
44	Butte Creek Elementary Sd 67j	Clackamas	326	Non-transient non-community	Groundwater
45	Eagle Crest Mobile Home Park	Clackamas	300	Community	Groundwater
46	Kelso Water Assn	Clackamas	300	Community	Groundwater
47	Clackamas Co Pks-Barton Park	Clackamas	300	Transient non-community	Groundwater
48	Blm Wildwood Rec Site	Clackamas	300	Transient non-community	Groundwater
49	Oregon Trail Sd - Cottrell Elem	Clackamas	300	Non-transient non-community	Groundwater
50	Alder Creek Barlow Water Dist	Clackamas	300	Community	Purchased surface water