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

COUNTY WATER-SYSTEM LEDGER

Alameda, California

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

Systems7active CWS · pop. 2,500+
Population served2,224,525reported total; may overlap
Current violation flag0.0%0 systems
Serious-violator flag0.0%0 systems

01 / SYSTEMS

Water systems serving Alameda

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

Water systemPopulation servedPrimary sourceCurrent export status
East Bay MudCA01100051,442,800Surface waterNo current violation flagged
Alameda County Water DistrictCA0110001344,000Surface waterNo current violation flagged
City Of HaywardCA0110006162,954Surface water purchasedNo current violation flagged
Dublin San Ramon Services DistrictCA011000998,776Surface water purchasedNo current violation flagged
City Of PleasantonCA011000876,689Surface water purchasedNo current violation flagged
California Water Service - LivermoreCA011000360,414Surface water purchasedNo current violation flagged
City Of LivermoreCA011001138,892Surface water purchasedNo current violation flagged

02 / SOURCE MIX

Surface water2 systems · 1,786,800 served
Surface water purchased5 systems · 437,725 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.