Unalaska Water System

EPA’s September 2026 export lists Unalaska Water System (PWSID AK2260309) as No current violation flagged, serving a reported 9,400 people from a surface water source, with 0 rules in current violation.

Source: EPA SDWIS system-search export · Snapshot 13 Sep 2026 · Federal compliance fields

CURRENT EXPORTNo current violation flaggedNo current violation is flagged in this EPA export. This is not a household water test.

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01 / CURRENT FLAGS

EPA compliance flags for Unalaska Water System

Unalaska Water System is listed as no current violation flagged in the current export; the five federal flag categories remain separate below.

NOT FLAGGED
Health-based violationCurrent HEALTH_FLAG in the EPA export.
NOT FLAGGED
Monitoring and reportingCurrent MR_FLAG in the EPA export.
NOT FLAGGED
Public notificationCurrent PN_FLAG in the EPA export.
NOT FLAGGED
Other violationCurrent OTHER_FLAG in the EPA export.
NOT FLAGGED
Serious violatorCurrent serious-violator status in the EPA export.

Important limit

This page is not a household water test. A clear federal flag does not prove every home has safe water, and a flag is not a measurement at your faucet. Plumbing, service lines, local sampling, private wells, and newer events may not be reflected here.

02 / VIOLATION RECORD

Quarters with violations11rolling history field

Quarters with SNC0significant noncompliance

Rules in current violation0EPA export count

Rules in 3-year window6EPA export count

Current rule entries for Unalaska Water System

EPA supplied 2 current contaminant, rule, or violation-category entries for Unalaska Water System in the exported fields used here.

Monitoring Violation
Monitoring and Reporting

Three-year entries for Unalaska Water System

EPA supplied 10 contaminant or rule entries for Unalaska Water System in the three-year history field.

0200=Surface Water Treatment Rule
0999=Chlorine
1040=Nitrate
2456=Total Haloacetic Acids (HAA5)
2920=CARBON, TOTAL
2950=TTHM
4000=Gross Alpha, Excl. Radon and U
4006=Combined Uranium
4010=Combined Radium (-226 and -228)
8000=Revised Total Coliform Rule

03 / OVERSIGHT & COVERAGE

Visits and sanitary surveys for Unalaska Water System

The export lists 7 site visits in five years and 3 significant deficiencies for Unalaska Water System.

Site visits, past 5 years: 7
Inspection visits: 0
Other visits: 7
Last sanitary survey: 10/08/2024
Last recorded visit: 09/16/2025
Significant deficiencies: 3

Places served by Unalaska Water System

EPA associates Unalaska Water System with the listed cities, counties, ZIP codes, and Alaska service area identifiers.

State / territory: Alaska
Cities: UNALASKA
Counties: Aleutians West Census Area
ZIP codes: Not supplied
Federal PWSID: AK2260309
Registry ID: 110012963579

04 / HOW TO USE THIS RECORD

Current public records for Unalaska Water System

EPA’s facility report, the Alaska drinking-water program, and Unalaska Water System’s Consumer Confidence Report are the current public records beyond this September 2026 snapshot.

Confirm current conditions with the utility's latest Consumer Confidence Report, your state drinking-water program, and the EPA facility report. For household concerns, ask a qualified local laboratory about tap testing.

How the ledger is built →