Alaska drinking water quality
Alaska has 1,327 active public water systems serving 865K people. 799 of them, 60%, had at least one EPA violation in the past three years, 295 have an unresolved violation today, and 100 are designated serious violators by the EPA.
Active systems
1,327
in 22 counties
People served
865K
408 community systems serve 702K
Violations, past 3 years
799
60% of active systems
Serious violators
100
96 systems carry a health flag
Largest counties
All 22 counties| County | People served | Systems | With violations |
|---|---|---|---|
| Anchorage Municipality | 305,180 | 155 | 92 |
| Fairbanks North Star Borough | 161,917 | 64 | 35 |
| Matanuska-Susitna Borough | 90,423 | 341 | 163 |
| Kenai Peninsula Borough | 47,686 | 205 | 111 |
| Juneau City and Borough | 40,575 | 11 | 9 |
| North Slope Borough | 30,227 | 79 | 25 |
| Denali Borough | 18,228 | 56 | 30 |
| Bethel Census Area | 17,867 | 57 | 56 |
| Kodiak Island Borough | 14,166 | 16 | 13 |
| Ketchikan Gateway Borough | 12,315 | 22 | 17 |
Largest community water systems
All 1,327 systems| System | Serves | Status |
|---|---|---|
| Moa Municipality of Anchorage Anchorage Municipality |
221,351 | |
| Golden Heart Utilities Fairbanks North Star Borough |
78,324 | |
| City and Borough of Juneau Juneau City and Borough |
38,526 | |
| Jber-Elmendorf Anchorage Municipality |
30,003 | |
| College Utilities Corporation Fairbanks North Star Borough |
27,000 | |
| Doyon Utilities Jber Richardson Anchorage Municipality |
20,284 | |
| FT Wainwright Main Post Fairbanks North Star Borough |
20,076 | |
| Wasilla Water System Matanuska-Susitna Borough |
18,492 | |
| Eielson Air Force Base Fairbanks North Star Borough |
11,870 | |
| Kodiak Water System Kodiak Island Borough |
9,547 |
About the Alaska data
Retrieved from EPA ECHO on Oct 11, 2026.