Weld County, Colorado — public water systems

73 active public water systems serve Weld County, reporting 361.7K people served.

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

Active systems

Population served

361.7K

Community systems

Groundwater share

35.6%

Water systems in Weld County

Active public water systems in Weld County, Colorado
#	Water system	County	Population served	Type	Source
1	Greeley City of	Weld	132,310	Community	Surface water
2	Firestone Town of	Weld	27,798	Community	Purchased surface water
3	Johnstown Town of	Weld	27,295	Community	Surface water
4	Windsor Town of	Weld	23,500	Community	Purchased surface water
5	Evans City of	Weld	19,369	Community	Purchased surface water
6	Frederick Town of	Weld	17,173	Community	Purchased surface water
7	North Weld County Wd	Weld	15,890	Community	Purchased surface water
8	Ft Lupton City of	Weld	12,099	Community	Surface water
9	Severance Town of	Weld	11,733	Community	Purchased surface water
10	Milliken Town of	Weld	9,200	Community	Purchased surface water
11	Central Weld Cnty Wd	Weld	7,662	Community	Purchased surface water
12	Eaton Town of	Weld	7,328	Community	Purchased surface water
13	Dacono City of	Weld	6,900	Community	Purchased surface water
14	Lochbuie Town of	Weld	6,518	Community	Groundwater
15	Keenesburg Town of	Weld	4,650	Community	Groundwater
16	Ault Town of	Weld	4,220	Community	Purchased surface water
17	Hudson Town of	Weld	3,350	Community	Purchased surface water
18	Platteville Town of	Weld	2,900	Community	Purchased surface water
19	Kersey Wd	Weld	2,101	Community	Purchased surface water
20	La Salle Town of	Weld	2,010	Community	Purchased surface water
21	Aristocrat Ranchette Water Project	Weld	1,715	Community	Purchased surface water
22	Gilcrest Town of	Weld	1,150	Community	Purchased surface water
23	Pierce Town of	Weld	1,094	Community	Purchased surface water
24	Stoneybrook MHP	Weld	1,073	Community	Purchased surface water
25	Cave Creek	Weld	1,025	Community	Purchased surface water
26	Longview MHP	Weld	1,000	Community	Purchased surface water
27	Villa West	Weld	833	Community	Purchased surface water
28	River Valley Mhc	Weld	803	Community	Purchased surface water
29	Mcdonald Farms Enterprises Inc.	Weld	772	Community	Purchased surface water
30	Friendly Village of Greeley MHP	Weld	660	Community	Purchased surface water
31	Prairie Greens MHP	Weld	654	Community	Purchased surface water
32	Nunn Town of	Weld	499	Community	Purchased surface water
33	Eagle Crest MHP	Weld	441	Community	Purchased surface water
34	Countryside of Greeley	Weld	435	Community	Purchased surface water
35	Stoneybrook Pointe	Weld	355	Community	Purchased surface water
36	Woodlands East	Weld	350	Community	Purchased surface water
37	Wattenberg Improvement Assoc	Weld	350	Community	Groundwater
38	Briggsdale Wc	Weld	303	Community	Groundwater
39	Country Estates Mobile Home Park	Weld	297	Community	Purchased surface water
40	Terrace Park MHP	Weld	297	Community	Purchased surface water
41	Prairie Elem at New Raymer	Weld	275	Non-transient non-community	Groundwater
42	Copper Key Village MHP	Weld	260	Community	Purchased surface water
43	Tagawa Greenhouses Inc.	Weld	250	Non-transient non-community	Groundwater
44	Briggsdale School	Weld	194	Non-transient non-community	Groundwater
45	Greeley Mobile Manor	Weld	180	Community	Purchased surface water
46	Green Acres Mobile Home Park	Weld	180	Community	Purchased surface water
47	Salt & Acres	Weld	158	Transient non-community	Groundwater
48	Serenity Ridge Vault Connection	Weld	157	Community	Purchased surface water
49	Stewarts Mobile Home Park	Weld	156	Community	Purchased surface water
50	Grover Town of	Weld	154	Community	Groundwater