All 26 systems met the sampling requirement for a yearly average. Of those systems, 2 had at least one yearly average above an EPA comparison level and 24 did not.
EPA-based study benchmark: a fixed, unrounded research cutoff used to reproduce EPA’s final UCMR 5 technical-assistance classification based on the April 2024 federal levels. It is not a current federal or state standard. The label does not determine compliance, household exposure, or health risk.
State rules: The labels on this page use fixed research cutoffs based on the April 2024 federal levels. Alaska may use different current standards or guidance. These UCMR 5 results do not determine current federal or state compliance. Find the official Alaska drinking-water program →
Find your water system
A ZIP code finds possible public water systems for an area; it cannot identify the supplier for a specific home. Confirm the provider using a water bill or utility record.
System counts in Alaska
Each count shows how many included water systems had a yearly average above the named EPA comparison level.
| EPA rounding cutoff | Systems above comparison level | Water systems included | Percent |
|---|---|---|---|
| PFOA: 4 ppt level; unrounded average ≥4.05 ppt after applying EPA rounding | 1 | 26 | 3.8% |
| PFOS: 4 ppt level; unrounded average ≥4.05 ppt after applying EPA rounding | 1 | 26 | 3.8% |
| PFHxS: 10 ppt level; unrounded average ≥15 ppt after applying EPA rounding | 1 | 26 | 3.8% |
| PFNA: 10 ppt level; unrounded average ≥15 ppt after applying EPA rounding | 0 | 26 | 0.0% |
| HFPO-DA: 10 ppt level; unrounded average ≥15 ppt after applying EPA rounding | 0 | 26 | 0.0% |
| Hazard Index: 1 level; unrounded index ≥1.5 and at least two detected components | 0 | 26 | 0.0% |
Community water systems with complete monitoring
“Complete monitoring” means at least one sampling location had every required sample needed to calculate a yearly average. It does not mean every location or home was tested. Each PWSID appears once, preventing double counting across ZIP associations.
| Public water system | PWSID | Population served | Primary source | Sampling locations | EPA comparison result |
|---|---|---|---|---|---|
| ALYESKA CREEKSIDE APARTMENTS | AK2218653 | 60 | Ground water | 1 | No available average above comparison levels |
| BARROW UTILITIES & ELEC. COOP., INC. (BU | AK2320078 | 4,900 | Surface water | 3 | Above an EPA comparison level |
| COLLEGE UTILITIES CORPORATION | AK2310900 | 27,000 | Ground water purchased | 1 | No available average above comparison levels |
| CORDOVA CITY WATER | AK2293205 | 2,700 | Surface water | 3 | No available average above comparison levels |
| DOYON UTILITIES JBER - RICHARDSON | AK2212039 | 20,284 | Surface water | 4 | No available average above comparison levels |
| EIELSON - AIR FORCE BASE | AK2370625 | 11,870 | Ground water | 2 | No available average above comparison levels |
| FT WAINWRIGHT - MAIN POST | AK2310918 | 20,076 | Ground water | 3 | No available average above comparison levels |
| GOLDEN HEART UTILITIES | AK2310730 | 78,324 | Ground water | 1 | No available average above comparison levels |
| HOMER WATER SYSTEM | AK2240456 | 7,008 | Surface water | 1 | No available average above comparison levels |
| JBER-ELMENDORF | AK2211423 | 30,003 | Surface water purchased | 1 | No available average above comparison levels |
| KENAI WATER SYSTEM | AK2240448 | 5,700 | Ground water | 1 | No available average above comparison levels |
| KETCHIKAN PUBLIC UTILITIES | AK2120232 | 8,937 | Surface water | 1 | No available average above comparison levels |
| KODIAK WATER SYSTEM | AK2250011 | 9,547 | Surface water | 1 | No available average above comparison levels |
| MOA MUNICIPALITY OF ANCHORAGE | AK2210906 | 221,351 | Surface water | 11 | Above an EPA comparison level |
| NOME JOINT UTILITY SYSTEM | AK2340010 | 3,920 | Ground water | 1 | No available average above comparison levels |
| NORTH POLE UTILITIES | AK2310675 | 4,005 | Ground water | 1 | No available average above comparison levels |
| PALMER WATER SYSTEM | AK2226020 | 8,111 | Ground water | 2 | No available average above comparison levels |
| SEWARD | AK2240757 | 3,324 | Ground water | 1 | No available average above comparison levels |
| SITKA | AK2130075 | 9,448 | Surface water | 1 | No available average above comparison levels |
| SKAGWAY | AK2110601 | 9,411 | Ground water | 2 | No available average above comparison levels |
| SOLDOTNA | AK2241054 | 4,807 | Ground water | 4 | No available average above comparison levels |
| UNALASKA WATER SYSTEM | AK2260309 | 9,400 | Surface water | 3 | No available average above comparison levels |
| UNIVERSITY OF ALASKA - FAIRBANKS | AK2310683 | 6,200 | Ground water purchased | 1 | No available average above comparison levels |
| VALDEZ WATER SYSTEM - MAIN | AK2298103 | 4,500 | Ground water | 3 | No available average above comparison levels |
| VALLI VUE S/D WATER SYSTEM | AK2210605 | 794 | Ground water | 1 | No available average above comparison levels |
| WASILLA WATER SYSTEM | AK2224646 | 18,492 | Ground water | 5 | No available average above comparison levels |
What is included
Each active community water system with enough required samples for a yearly average is counted once, even if it is linked with several ZIP codes. Private wells are excluded, and UCMR 5 did not comprehensively monitor every small system.