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

COUNTY WATER-SYSTEM LEDGER

Guam, Guam

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

Systems5active CWS · pop. 2,500+
Population served186,886reported total; may overlap
Current violation flag0.0%0 systems
Serious-violator flag0.0%0 systems

01 / SYSTEMS

Water systems serving Guam

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

Water systemPopulation servedPrimary sourceCurrent export status
Gwa Northern Water SystemGU0000006139,207Ground waterNo current violation flagged
Gwa Central Water SystemGU000000321,398Surface water purchasedNo current violation flagged
U.S. Navy Water SystemGU000001012,780Surface waterNo current violation flagged
Andersen Air Force Base Water SystemGU00000097,700Ground waterNo current violation flagged
Gwa Southern Water SystemGU00000015,801Surface waterNo current violation flagged

02 / SOURCE MIX

Ground water2 systems · 146,907 served
Surface water purchased1 systems · 21,398 served
Surface water2 systems · 18,581 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.