Yolo County, California — public water systems

88 active public water systems serve Yolo County, reporting 259.7K people served.

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

Active systems

Population served

259.7K

Community systems

Groundwater share

93.2%

Water systems in Yolo County

Active public water systems in Yolo County, California
#	Water system	County	Population served	Type	Source
1	City of Davis	Yolo	67,457	Community	Purchased surface water
2	City of Woodland	Yolo	61,462	Community	Purchased surface water
3	City of West Sacramento	Yolo	53,355	Community	Surface water
4	Uc - Davis	Yolo	49,616	Community	Purchased surface water
5	City of Winters	Yolo	7,115	Community	Groundwater
6	Esparto C.S.D.	Yolo	3,574	Community	Groundwater
7	Wild Wings Golf Community	Yolo	1,115	Community	Groundwater
8	Pacific Coast Producers	Yolo	1,000	Transient non-community	Groundwater
9	Caltrans-Dunigan Rs	Yolo	1,000	Transient non-community	Groundwater
10	Knights Landing Svc. Dist.	Yolo	944	Community	Groundwater
11	Madison Service Dist	Yolo	876	Community	Groundwater
12	Monroe/Leinberger Cntr - Waters	Yolo	800	Community	Groundwater
13	Cal Am - Dunnigan	Yolo	602	Community	Groundwater
14	St Joseph'S Church	Yolo	500	Transient non-community	Groundwater
15	Clarksburg Middle School	Yolo	460	Non-transient non-community	Groundwater
16	Clark Pacific - Cr 18c	Yolo	450	Non-transient non-community	Groundwater
17	Yolo Co Housing Authority-El Rio Villa	Yolo	432	Community	Groundwater
18	Yolo Fliers Club	Yolo	415	Non-transient non-community	Groundwater
19	Plainfield Elem School - Water	Yolo	400	Non-transient non-community	Groundwater
20	North Davis Meadows	Yolo	314	Community	Groundwater
21	Crew Wine Company	Yolo	312	Non-transient non-community	Groundwater
22	Grace Valley Christian Center	Yolo	304	Non-transient non-community	Groundwater
23	Berryessa Brewing Company	Yolo	300	Transient non-community	Groundwater
24	Sacwest Rv Park and Campground	Yolo	300	Transient non-community	Groundwater
25	Jack in the Box #3465	Yolo	300	Transient non-community	Groundwater
26	Heringer Estates Winery	Yolo	300	Transient non-community	Groundwater
27	First Baptist Church	Yolo	300	Transient non-community	Groundwater
28	Delta High School	Yolo	250	Non-transient non-community	Groundwater
29	Sacramento Yacht Club	Yolo	250	Transient non-community	Groundwater
30	Unitarian Church of Davis	Yolo	250	Non-transient non-community	Groundwater
31	Jehovah'S Witnesses - Kingdom Hall	Yolo	245	Transient non-community	Groundwater
32	Cacheville Service Dist	Yolo	239	Community	Groundwater
33	Canyon Creek Resort	Yolo	212	Transient non-community	Surface water
34	Dunnigan Chevron	Yolo	205	Transient non-community	Groundwater
35	Jehovah'S Witnesses - Southport	Yolo	200	Transient non-community	Groundwater
36	The Maples	Yolo	200	Non-transient non-community	Groundwater
37	United Travel Plaza	Yolo	200	Transient non-community	Groundwater
38	Americas Best Value Inn	Yolo	200	Transient non-community	Groundwater
39	Bayer Research and Development LLC	Yolo	178	Non-transient non-community	Groundwater
40	Clarksburg Comm Church	Yolo	160	Non-transient non-community	Groundwater
41	Zamora Shell & Mini Mart	Yolo	158	Transient non-community	Groundwater
42	Mariani Nut Company - Buckeye Rd	Yolo	150	Non-transient non-community	Groundwater
43	Nelson'S Grove	Yolo	150	Transient non-community	Groundwater
44	Campers Inn - Rv & Golf Course	Yolo	140	Community	Groundwater
45	Road Trip Bar & Grill	Yolo	120	Transient non-community	Groundwater
46	Yolo Co Airport	Yolo	114	Non-transient non-community	Groundwater
47	Ihs Nor Cal Youth Trmnt Ctr(Sacred Oaks)	Yolo	104	Non-transient non-community	Groundwater
48	Excel Gas and Market	Yolo	100	Transient non-community	Groundwater
49	Cache Creek Canyon-Middle Site	Yolo	100	Transient non-community	Groundwater
50	Davis Migrant Center (Ciudad Del Sol)	Yolo	91	Non-transient non-community	Groundwater