EPA EXPORT · 13 SEP 2026FEDERAL COMPLIANCE RECORDS · NOT A HOME WATER TEST
TAP WATERLEDGERPublic system compliance records

COUNTY WATER-SYSTEM LEDGER

Yolo, California

Compare active community water systems serving this county in EPA's public export. Systems can serve multiple places, so population totals may overlap.

Systems6active CWS · pop. 2,500+
Population served242,579reported total; may overlap
Current violation flag16.7%1 systems
Serious-violator flag0.0%0 systems

01 / SYSTEMS

Water systems serving Yolo

Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.

Water systemPopulation servedPrimary sourceCurrent export status
City Of DavisCA571000167,457Surface water purchasedNo current violation flagged
City Of WoodlandCA571000661,462Surface water purchasedNo current violation flagged
City Of West SacramentoCA571000353,355Surface waterCurrent health-based flag
Uc - DavisCA571000949,616Surface water purchasedNo current violation flagged
City Of WintersCA57100057,115Ground waterNo current violation flagged
Esparto C.S.D.CA57100073,574Ground waterNo current violation flagged

02 / SOURCE MIX

Surface water purchased3 systems · 178,535 served
Surface water1 systems · 53,355 served
Ground water2 systems · 10,689 served
How to read the population total

It is the sum of each listed system's reported population served, not a census estimate. Service areas can overlap and some systems list multiple cities or counties.