Gross Alpha, Excl. Radon and U violations in Alaska
33 active public water systems in Alaska had a Gross Alpha, Excl. Radon and U violation in the past three years, 1 of them in the latest quarter of EPA's data. What Gross Alpha, Excl. Radon and U is and why it matters.
Systems with a Gross Alpha, Excl. Radon and U violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Napakiak Washeteria Napakiak · Bethel Census Area County |
336 | 6 | 1 | |
|
Unalaska Water System Unalaska · Aleutians West Census Area County |
9,400 | 6 | 0 | |
|
Valley Water Company Fairbanks · Fairbanks North Star Borough County |
1,575 | 6 | 3 | |
|
City of Hooper Bay Hooper Bay · County |
1,375 | 10 | 4 | |
|
Sand Point Water System Sand Point · Aleutians East Borough County |
830 | 7 | 0 | |
|
Kwethluk New Piped Water System Kwethluk · Bethel Census Area County |
760 | 11 | 2 | |
|
Noorvik Water System Noorvik · Northwest Arctic Borough County |
735 | 6 | 1 | |
|
Gambell Water System Gambell · Nome Census Area County |
669 | 10 | 2 | |
|
New Stuyahok Water System New Stuyahok · Dillingham Census Area County |
566 | 8 | 2 | |
|
Angoon Public Water Angoon · County |
450 | 13 | 2 | |
|
Hydaburg Hydaburg · County |
415 | 10 | 3 | |
|
Nanwalek Nanwalek · Kenai Peninsula Borough County |
281 | 11 | 2 | |
|
Eek Water System Eek · Bethel Census Area County |
280 | 9 | 0 | |
|
Larsen Bay Water System Larsen Bay · Kodiak Island Borough County |
271 | 11 | 0 | |
|
Too'gha INC in Tanana Tanana · Yukon-Koyukuk Census Area County |
271 | 9 | 1 | |
|
Forest Park TC Chugiak · Anchorage Municipality County |
175 | 12 | 3 | |
|
Wales Water System Wales · Nome Census Area County |
173 | 9 | 2 | |
|
Mertarvik Water System Newtok · Bethel Census Area County |
170 | 6 | 0 | |
|
Mountain View Estates Palmer · Matanuska-Susitna Borough County |
150 | 3 | 1 | |
|
Clarks Point Water System Clarks Point · Dillingham Census Area County |
128 | 6 | 2 | |
|
Knik Tribal Council Senior Housing Dev Wasilla · Matanuska-Susitna Borough County |
128 | 5 | 2 | |
|
Chuathbaluk Water System Chuathbaluk · Bethel Census Area County |
123 | 9 | 2 | |
|
Chilkat Indian Village Haines · Haines Borough County |
113 | 10 | 1 | |
|
Highland Pride Mobile Home Park Soldotna · Kenai Peninsula Borough County |
100 | 6 | 2 | |
|
Anvik Water System Anvik · Yukon-Koyukuk Census Area County |
96 | 8 | 2 | |
|
Perryville Water System Perryville · Lake and Peninsula Borough County |
88 | 11 | 0 | |
|
Wasilla Lacy Laine SD Wasilla · Matanuska-Susitna Borough County |
75 | 3 | 1 | |
|
Shooting Star Circle Palmer · Matanuska-Susitna Borough County |
52 | 2 | 0 | |
|
Sun Valley Heights North Anchorage · Anchorage Municipality County |
51 | 4 | 0 | |
|
Twin Peaks Palmer · Matanuska-Susitna Borough County |
37 | 5 | 0 | |
|
Matanuska Heights Duchess Palmer · Matanuska-Susitna Borough County |
36 | 1 | 0 | |
|
Sun Valley Heights South Anchorage · Anchorage Municipality County |
34 | 3 | 0 | |
|
June Lake Airpark Subdivision Wasilla · Matanuska-Susitna Borough County |
26 | 2 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved Gross Alpha, Excl. Radon and U, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Gross Alpha, Excl. Radon and U alone.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Alaska records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet.