Multnomah County, Oregon — public water systems

57 active public water systems serve Multnomah County, reporting 854.6K people served.

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

Active systems

Population served

854.6K

Community systems

Groundwater share

80.7%

Water systems in Multnomah County

Active public water systems in Multnomah County, Oregon
#	Water system	County	Population served	Type	Source
1	Portland Water Bureau	Multnomah	666,200	Community	Surface water
2	Gresham, City of	Multnomah	73,932	Community	Purchased surface water
3	Rockwood PUD	Multnomah	65,443	Community	Purchased surface water
4	Troutdale, City of	Multnomah	16,185	Community	Groundwater
5	Fairview, City of	Multnomah	9,963	Community	Groundwater
6	Wood Village, City of	Multnomah	4,388	Community	Groundwater
7	Usfs Multnomah Falls/Wahkeena	Multnomah	3,200	Transient non-community	Groundwater
8	Corbett Water District	Multnomah	2,954	Community	Surface water
9	Pleasant Home Water District	Multnomah	1,510	Community	Purchased surface water
10	Palatine Hill Water District	Multnomah	1,500	Community	Purchased surface water
11	Lusted Water District	Multnomah	1,200	Community	Purchased surface water
12	Valley View Water District	Multnomah	1,034	Community	Purchased surface water
13	Metro Parks - Oxbow	Multnomah	822	Transient non-community	Groundwater
14	Pleasant Valley Elementary	Multnomah	650	Non-transient non-community	Groundwater
15	Oprd Lewis & Clark State Park	Multnomah	400	Transient non-community	Groundwater
16	Interlachen Water PUD	Multnomah	360	Community	Groundwater
17	Sandy Boulevard Mobile Villa	Multnomah	350	Community	Groundwater
18	Burlington Water District	Multnomah	340	Community	Purchased surface water
19	Manna House Church	Multnomah	300	Community	Groundwater
20	Usfs Eagle Creek Cg	Multnomah	255	Transient non-community	Groundwater
21	Townsend Farms Fairview	Multnomah	250	Non-transient non-community	Groundwater
22	Skyline Elementary Sd 1j	Multnomah	250	Non-transient non-community	Groundwater
23	Camp Collins Ymca	Multnomah	250	Transient non-community	Groundwater
24	Lorna Water District	Multnomah	212	Community	Purchased surface water
25	Central Church of the Nazarene	Multnomah	200	Transient non-community	Groundwater
26	Clear Creek Church	Multnomah	200	Transient non-community	Groundwater
27	Sauvie Island School	Multnomah	175	Non-transient non-community	Groundwater
28	Oprd Ainsworth State Park	Multnomah	150	Transient non-community	Groundwater
29	Sigler Cove Marina	Multnomah	150	Community	Groundwater
30	Trout Creek Bible Camp	Multnomah	150	Transient non-community	Groundwater
31	Rocky Pointe Marina	Multnomah	125	Community	Groundwater
32	Usace Bonneville Dam	Multnomah	109	Non-transient non-community	Groundwater
33	Mobile Village MHP LLC	Multnomah	100	Community	Groundwater
34	Oprd Bridal Veil Falls St Park	Multnomah	100	Transient non-community	Groundwater
35	Sauvie Island Moorage	Multnomah	96	Community	Groundwater
36	Oprd Guy W Talbot Sp	Multnomah	90	Transient non-community	Groundwater
37	Wild Wood Golf Course	Multnomah	82	Transient non-community	Groundwater
38	The Pumpkin Patch	Multnomah	75	Transient non-community	Groundwater
39	Topaz Farm	Multnomah	75	Transient non-community	Groundwater
40	Burnside Rocket	Multnomah	75	Transient non-community	Groundwater
41	Plainview Grocery	Multnomah	75	Transient non-community	Groundwater
42	Wapato Moorage Association	Multnomah	74	Community	Groundwater
43	Terrand Mobile Terrace	Multnomah	71	Community	Groundwater
44	Columbia Airgas	Multnomah	55	Non-transient non-community	Groundwater
45	Bailey Nursery Reeder Rd Main	Multnomah	54	Non-transient non-community	Groundwater
46	Reeder Beach Resort	Multnomah	50	Transient non-community	Groundwater
47	Pleasant Valley Market	Multnomah	50	Transient non-community	Groundwater
48	Club Paesano Cedarville Park	Multnomah	43	Transient non-community	Groundwater
49	Bella Organic Farm	Multnomah	40	Transient non-community	Groundwater
50	Ash Grove Cement West-Rvrgate	Multnomah	32	Non-transient non-community	Groundwater