Kootenai County, Idaho — public water systems

183 active public water systems serve Kootenai County, reporting 178.4K people served.

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

Active systems

183

Population served

178.4K

Community systems

113

Groundwater share

95.1%

Water systems in Kootenai County

Active public water systems in Kootenai County, Idaho
#	Water system	County	Population served	Type	Source
1	Coeur D Alene City of	Kootenai	54,115	Community	Groundwater
2	Post Falls City of	Kootenai	20,285	Community	Groundwater
3	East Greenacres Irrigation Dist	Kootenai	11,165	Community	Groundwater
4	Rathdrum City of	Kootenai	10,358	Community	Groundwater
5	Hayden Lake Irrigation Dist	Kootenai	9,375	Community	Groundwater
6	Ross Point Water Dist	Kootenai	8,965	Community	Groundwater
7	Avondale Irrigation Dist	Kootenai	8,785	Community	Groundwater
8	Hillside Service Area	Kootenai	4,140	Community	Groundwater
9	Silverwood	Kootenai	3,930	Non-transient non-community	Groundwater
10	Rimrock Service Area	Kootenai	3,493	Community	Groundwater
11	Spirit Lake City of	Kootenai	2,825	Community	Groundwater
12	Dalton Water Assn Inc.	Kootenai	2,598	Community	Groundwater
13	Twin Lakes Service Area	Kootenai	2,023	Community	Groundwater
14	Idpr Farragut State Park	Kootenai	2,000	Transient non-community	Groundwater
15	Hauser Lake Water Assn Inc.	Kootenai	1,575	Community	Groundwater
16	Bayview Water and Sewer Dist	Kootenai	1,320	Community	Groundwater
17	Huetter Poe Itd	Kootenai	1,200	Transient non-community	Groundwater
18	Hayden Pines Grouse Meadows	Kootenai	1,188	Community	Groundwater
19	Remington Rec Water Dist	Kootenai	1,104	Community	Groundwater
20	Black Rock Utilities Inc.	Kootenai	1,014	Community	Groundwater
21	Athol City of	Kootenai	990	Community	Groundwater
22	Greenferry Water & Sewer District	Kootenai	978	Community	Groundwater
23	Kootenai County Water Dist 1	Kootenai	843	Community	Surface water
24	Gem State - Spirit Lake East	Kootenai	843	Community	Groundwater
25	Gem State - Bar Circle S Ranch	Kootenai	633	Community	Groundwater
26	Real Life Ministries North	Kootenai	600	Transient non-community	Groundwater
27	Worley City of	Kootenai	591	Community	Groundwater
28	Chilco Service Area	Kootenai	563	Community	Groundwater
29	Pine Villa Park and Water Assn	Kootenai	500	Community	Groundwater
30	Emerald Estates Water Assn Inc.	Kootenai	485	Community	Groundwater
31	Holiday Acres Water Assn	Kootenai	480	Community	Groundwater
32	Gozzer Ranch	Kootenai	470	Community	Surface water
33	Cave Bay Community System	Kootenai	458	Community	Groundwater
34	Harrison City of	Kootenai	456	Community	Groundwater
35	New Life Community Church	Kootenai	450	Non-transient non-community	Groundwater
36	Pineview Estates Water Dist	Kootenai	450	Community	Groundwater
37	Lone Mountain Estates	Kootenai	448	Community	Groundwater
38	Mountain View Terrace	Kootenai	445	Community	Groundwater
39	Gem State - Bitterroot Water Company	Kootenai	428	Community	Groundwater
40	Garwood Water Coop	Kootenai	398	Community	Groundwater
41	Leisure Park	Kootenai	381	Community	Groundwater
42	Troy Hoffman Water Corp	Kootenai	367	Community	Groundwater
43	Harbor View Estates Water & Sewer Dist	Kootenai	355	Community	Surface water
44	Conkling Park Water Assn	Kootenai	309	Community	Groundwater
45	Rose Lake Water Assn	Kootenai	300	Community	Groundwater
46	Elkhorn Ranch	Kootenai	278	Community	Groundwater
47	Lost Creek Estates Water	Kootenai	277	Community	Groundwater
48	Arrow Point Park	Kootenai	275	Community	Purchased surface water
49	Royal Highland Water System	Kootenai	275	Community	Groundwater
50	Chateaux Water Assn Inc.	Kootenai	275	Community	Groundwater