Central ASG

Water Quality Snapshot: Central ASG

Central ASG is a state-owned community water system that delivers drinking water to 45,315 residents in Pago Pago, American Samoa (Eastern District County) through 8,944 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 636 total violations for this system , of which 75 (12%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 523 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 51 violations (MCL, health-based). Under EPA's UCMR5 PFAS monitoring program, 1 PFAS compound was detected in samples collected from this system, with a maximum reported concentration of 3.2 ppt (parts per trillion). PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.

Across American Samoa, EPA tracks 91 public water systems serving 50,626 people, with 1,883 cumulative violations and 238 health-based violations on record. About 22% of systems in the state carry at least one violation, and state-wide the average per system is 20.7 violations. Statewide, 1 of 1 UCMR5-tested systems have reported PFAS detections (100%).

Central ASG's 636 violations sit above the American Samoa average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.