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Community water systems in Guam

4 on the EPA record.

APO AP

ANDERSEN AIR FORCE BASE WATER SYSTEM

MANGILAO

GWA CENTRAL WATER SYSTEM
GWA NORTHERN WATER SYSTEM
GWA SOUTHERN WATER SYSTEM

Source and as-of dates

violation — as of 2026-08-31
water_system — as of 2026-08-31

Tap Water File publishes public records from US Environmental Protection Agency (EPA). Published by Fulcrum LLC.

These pages reproduce official records. They are not an endorsement, a rating of our own, or advice. If something here is wrong or out of date, we want to fix it — tell us.