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

CITY WATER-SYSTEM LEDGER

Modesto, California

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

Systems3active CWS · pop. 2,500+
Population served242,096reported total; may overlap
Current violation flag0.0%0 systems
Serious-violator flag0.0%0 systems

01 / SYSTEMS

Water systems serving Modesto

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

Water systemPopulation servedPrimary sourceCurrent export status
Modesto, City OfCA5010010218,771Surface water purchasedNo current violation flagged
City Of Modesto - SalidaCA501000514,537Surface water purchasedNo current violation flagged
City Of WaterfordCA50100068,788Ground waterNo current violation flagged

02 / SOURCE MIX

Surface water purchased2 systems · 233,308 served
Ground water1 systems · 8,788 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.