Adams County, Colorado — public water systems

82 active public water systems serve Adams County, reporting 710.6K people served.

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

Active systems

Population served

710.6K

Community systems

Groundwater share

59.8%

Water systems in Adams County

Active public water systems in Adams County, Colorado
#	Water system	County	Population served	Type	Source
1	Thornton City of	Adams	226,465	Community	Surface water
2	Westminster City of	Adams	202,078	Community	Surface water
3	South Adams County Wsd	Adams	75,559	Community	Purchased surface water
4	Brighton City of	Adams	56,304	Community	Purchased surface water
5	Northglenn City of	Adams	48,927	Community	Surface water
6	Crestview Wsd	Adams	23,756	Community	Purchased surface water
7	North Washington Street Wsd	Adams	14,500	Community	Purchased surface water
8	Federal Heights City of	Adams	11,678	Community	Purchased surface water
9	Todd Creek Village Md	Adams	7,202	Community	Groundwater under influence of surface water
10	Bennett Town of	Adams	4,400	Community	Groundwater
11	North Pecos Wsd	Adams	2,500	Community	Purchased surface water
12	Wikiup MHP	Adams	2,500	Community	Groundwater
13	Eastern Adams Co Md	Adams	2,485	Community	Groundwater
14	Strasburg Wsd	Adams	2,050	Community	Groundwater
15	Kimberly Hills MHP	Adams	2,005	Community	Purchased surface water
16	Pine Lakes Ranch	Adams	1,905	Community	Purchased surface water
17	Friendly Village of Aurora MHP	Adams	1,786	Community	Purchased surface water
18	Woodland Hills Mhc	Adams	1,740	Community	Purchased surface water
19	Hillcrest Village MHP	Adams	1,505	Community	Purchased surface water
20	Redwood Estates	Adams	1,500	Community	Purchased surface water
21	The Grove at Alta Ridge	Adams	1,300	Community	Purchased surface water
22	Greatrock North Wsd	Adams	1,250	Community	Groundwater
23	Denver Cascade MHP	Adams	1,200	Community	Purchased surface water
24	Holiday Hills Village	Adams	1,190	Community	Purchased surface water
25	Casa Estates MHP	Adams	1,117	Community	Purchased surface water
26	Friendly Village of the Rockies	Adams	1,046	Community	Purchased surface water
27	Adams County Parks	Adams	868	Non-transient non-community	Groundwater
28	Countryside Village of Denver	Adams	863	Community	Purchased surface water
29	Mile High Wc	Adams	700	Community	Purchased surface water
30	Lamplighter MHP	Adams	651	Community	Purchased surface water
31	Barr Lake State Park	Adams	609	Transient non-community	Groundwater
32	Watkins Square	Adams	515	Transient non-community	Groundwater
33	Franklin Mobile Home Park	Adams	513	Community	Purchased surface water
34	Belleview Christian College	Adams	460	Community	Groundwater
35	Mountain View Fellowship	Adams	447	Transient non-community	Groundwater
36	Avilla Eastlake	Adams	410	Community	Purchased surface water
37	Hi Land Acres Wsd	Adams	350	Community	Groundwater
38	Green Acres MHP	Adams	325	Community	Groundwater
39	Mountain View Wua	Adams	320	Community	Groundwater
40	Chaparral Village MHP	Adams	303	Community	Purchased surface water
41	Thornton Estates	Adams	300	Community	Purchased surface water
42	Cavanaugh Hills Ws	Adams	286	Community	Groundwater
43	Hazeltine Heights Water	Adams	261	Community	Groundwater
44	Pioneer Mobile Home Park	Adams	250	Community	Purchased surface water
45	Garden Meadows	Adams	250	Community	Purchased surface water
46	Johnson Auto Plaza	Adams	247	Non-transient non-community	Groundwater
47	Buffalo Run Golf Course	Adams	240	Transient non-community	Groundwater
48	Riverdale Peaks Ii Md	Adams	209	Community	Groundwater
49	Barr Lake Rvp	Adams	204	Community	Groundwater
50	Flatrock Training Center Ws	Adams	204	Transient non-community	Groundwater