Alaska water system serving 771 logged Tier 1 violation starting March 1

A water system serving 771 Alaskans carries a health-based treatment technique violation under the EPA's most urgent public-notification tier. EPA's Safe Drinking Water Information System lists the system, identified only as AK2110643, with a compliance period that began March 1, 2026. The records do not show whether the violation has since been resolved. Tier 1, the most urgent notification level, requires suppliers to notify customers within 24 hours of violations posing serious short-term health risks. The data do not name the community.

Five other Alaska systems recorded Tier 2 violations in March, serving populations from 40 to 508. Most of the remaining violations among Alaska's 4,662 logged records are Tier 3 monitoring and reporting lapses.

Separately, Alaska News has reported that 92 Alaska water systems serving 29,185 people carry the serious-violator designation, a distinct measure from these notification tiers. The state's last formal enforcement action in that category was logged in August 2020.