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

COUNTY WATER-SYSTEM LEDGER

Marin, 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 served267,033reported total; may overlap
Current violation flag0.0%0 systems
Serious-violator flag0.0%0 systems

01 / SYSTEMS

Water systems serving Marin

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

Water systemPopulation servedPrimary sourceCurrent export status
Marin Municipal Water DistrictCA2110002186,895Surface waterNo current violation flagged
North Marin Water DistrictCA211000361,691Surface waterNo current violation flagged
Nps GgnraCA211035018,447Surface water purchasedNo current violation flagged

02 / SOURCE MIX

Surface water2 systems · 248,586 served
Surface water purchased1 systems · 18,447 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.