Tap Truth EPA drinking water records, in plain English

County drinking water records

Yolo County, CA drinking water systems

19 community water systems serve Yolo County, CA, reporting 260,925 people served in all. A system that also serves other counties counts all of its customers here.

7 of them (37%) had at least one health-based violation in the last 10 years. 5 systems still have one unresolved.

14 rely mainly on groundwater and 5 on surface water, counting water bought from other systems.

16 systems filed a lead service line inventory listing 0 lead lines, 0 galvanized lines that must be replaced and 10,564 lines of unknown material.

Community water systems
19
People served, sum of each system's own figure
260,925
Systems with a health-based violation, last 10 years
7
Systems with one unresolved
5
Lead service lines in inventories
0

Water systems serving Yolo County

19 systems

People served is each system's own figure for its whole service area. Violation counts cover the last 10 years of EPA records.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
City of Davis Davis and El Macero 67,457 Purchased surface water 0 0 0
City of Woodland Woodland 61,462 Purchased surface water 0 0 0
City of West Sacramento West Sacramento 53,355 Surface water 1 2 No inventory
Uc - Davis University of California-Davis and land outside it 49,616 Purchased surface water 0 0 0
Yocha Dehe Potable Water System Tancred 12,800 Groundwater 0 0 0
City of Winters Winters 7,115 Groundwater 0 0 0
Esparto C.S.D. Esparto 3,574 Groundwater 0 0 0
Wild Wings Golf Community Monument Hills 1,115 Groundwater 0 0 0
Knights Landing SVC. Dist. Knights Landing 944 Groundwater 1 2 0
Madison Service Dist Madison 876 Groundwater 1 2 No inventory
Monroe/Leinberger CNTR - Waters Woodland 800 Groundwater 1 2 No inventory
Cal Am - Dunnigan Dunnigan and land outside it 602 Groundwater 0 0 0
Yolo Co Housing Authority-El Rio Villa Outside cities and towns 432 Groundwater 0 0 0
North Davis Meadows Outside cities and towns 314 Groundwater 28 0 0
Cacheville Service Dist Yolo 239 Groundwater 1 2 0
Campers Inn - RV & Golf Course Dunnigan 140 Groundwater 0 0 0
Bonfire Village Hotel Dunnigan 44 Groundwater 16 0 0
Rolling Acres Mutual Water Company Outside cities and towns 40 Groundwater 0 0 0
Woodland-Davis Clean Water Agency Woodland and land outside it Not reported Surface water 0 0 0

Cities and towns in Yolo County

13 places

Back to California

Counties come from the counties EPA lists each system serving, matched to 2024 Census counties; where EPA lists none, from the county coded in the system's ID, its service area map, or its mailing address. A county holding at least a fifth of a system's service area map is added when at least a fifth of that map lies in those counties. Towns are the ones EPA lists and the Census places such a map covers, always inside those counties. In New England, where EPA's town names a whole Town, it is not matched to the village of the same name. A system is not listed in a county holding less than a fifth of its map, or in a county or town its map reaches when the map lies mostly outside the counties EPA lists, so a page can leave out a system that serves part of the area. Methodology and limitations