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

COUNTY WATER-SYSTEM LEDGER

San Francisco, California

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

Systems3active CWS · pop. 2,500+
Population served855,383reported total; may overlap
Current violation flag0.0%0 systems
Serious-violator flag0.0%0 systems

01 / SYSTEMS

Water systems serving San Francisco

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

Water systemPopulation servedPrimary sourceCurrent export status
Sfpuc City Distribution DivisionCA3810011848,019Surface water purchasedNo current violation flagged
Treasure IslandCA38107023,864Surface water purchasedNo current violation flagged
Presidio Of San FranciscoCA38107003,500Surface waterNo current violation flagged

02 / SOURCE MIX

Surface water purchased2 systems · 851,883 served
Surface water1 systems · 3,500 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.