Larimer County, Colorado — public water systems

135 active public water systems serve Larimer County, reporting 519.2K people served.

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

Active systems

135

Population served

519.2K

Community systems

Groundwater share

59.3%

Water systems in Larimer County

Active public water systems in Larimer County, Colorado
#	Water system	County	Population served	Type	Source
1	Ft Collins City of	Larimer	179,901	Community	Surface water
2	Loveland City of	Larimer	95,471	Community	Surface water
3	Ft Collins Loveland Wd	Larimer	63,532	Community	Purchased surface water
4	East Larimer County Wd	Larimer	27,944	Community	Purchased surface water
5	Csu Main and West Housing Campus	Larimer	27,375	Community	Purchased surface water
6	Little Thompson Wd	Larimer	25,654	Community	Purchased surface water
7	Estes Park Town of	Larimer	16,722	Community	Surface water
8	Berthoud Town of	Larimer	14,211	Community	Surface water
9	Wellington Town of	Larimer	11,720	Community	Surface water
10	Csu South Campus	Larimer	5,164	Non-transient non-community	Purchased surface water
11	Northern Colorado Wa	Larimer	4,675	Community	Purchased surface water
12	Csu Foothills Campus	Larimer	4,483	Non-transient non-community	Purchased surface water
13	West Fort Collins Wd	Larimer	4,000	Community	Purchased surface water
14	Ymca Rockies Wind River	Larimer	3,730	Community	Purchased surface water
15	Fall River Pass	Larimer	3,300	Transient non-community	Groundwater
16	Spring Canyon Wsd	Larimer	2,320	Community	Purchased surface water
17	Timber Ridge MHP	Larimer	1,736	Community	Purchased surface water
18	Harmony Village MHP	Larimer	1,215	Community	Purchased surface water
19	Cloverleaf Colorado LLC	Larimer	1,007	Community	Purchased surface water
20	Poudre Valley Mhc	Larimer	985	Community	Purchased surface water
21	Collins Aire Mhc	Larimer	946	Community	Purchased surface water
22	Rmnp Headquarters East	Larimer	900	Community	Groundwater
23	Lago Vista Mobile Home Park	Larimer	842	Community	Purchased surface water
24	Hickory Village	Larimer	816	Community	Purchased surface water
25	Pinewood Springs Wd	Larimer	745	Community	Surface water
26	Estes Park Cg at Marys Lake	Larimer	700	Transient non-community	Groundwater
27	Rocky Mountain Gateway	Larimer	686	Transient non-community	Groundwater
28	Mountain Park Cg	Larimer	548	Transient non-community	Groundwater
29	Longs Peak Cg	Larimer	500	Transient non-community	Surface water
30	Glacier Basin	Larimer	500	Transient non-community	Groundwater
31	Cheley Colorado Camp Main	Larimer	500	Transient non-community	Surface water
32	Hermit Park Open Space	Larimer	464	Transient non-community	Groundwater
33	Sunset Park Mhc	Larimer	462	Community	Purchased surface water
34	Riverview Cg	Larimer	450	Community	Surface water
35	Sunset Wd	Larimer	425	Community	Purchased surface water
36	Kennedy Mountain Campus	Larimer	417	Transient non-community	Groundwater
37	Chambers Lake Cg	Larimer	408	Transient non-community	Groundwater
38	Big Elk Meadows Wa	Larimer	405	Community	Surface water
39	Skyline	Larimer	402	Community	Purchased surface water
40	Consolidated Glacier View Meadows Assoc	Larimer	395	Community	Groundwater
41	Tunnel Cg	Larimer	392	Transient non-community	Groundwater
42	Apple & Cherry Ridge Village	Larimer	350	Community	Purchased surface water
43	Ben Delatour Boy Scout Camp	Larimer	345	Transient non-community	Surface water
44	Windcliff Poa	Larimer	337	Community	Purchased surface water
45	North Carter Lake Wd	Larimer	328	Community	Purchased surface water
46	Alpine Vista Village	Larimer	313	Community	Purchased surface water
47	Fox Acres Comm Serv Corp	Larimer	306	Non-transient non-community	Groundwater
48	Aspen Ridge Mhc	Larimer	302	Community	Purchased surface water
49	West Lake Cg	Larimer	296	Transient non-community	Groundwater
50	Pleasant Grove MHP	Larimer	285	Community	Purchased surface water