Combined Radium (-226 and -228) violations in Alaska
37 active public water systems in Alaska had a Combined Radium (-226 and -228) violation in the past three years, 1 of them in the latest quarter of EPA's data. What Combined Radium (-226 and -228) is and why it matters.
Systems with a Combined Radium (-226 and -228) 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 | |
|
Mountain Village Water System Mountain Village · County |
887 | 11 | 2 | |
|
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 | |
|
Alakanuk Water System Alakanuk · County |
570 | 14 | 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 | |
|
Chignik Lake Water System Chignik Lake · Lake and Peninsula Borough County |
200 | 6 | 3 | |
|
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 | |
|
Tanacross Water System Tanacross · Southeast Fairbanks Census Area County |
108 | 8 | 4 | |
|
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 | |
|
Heavenly Meadows Palmer · Matanuska-Susitna Borough County |
88 | 2 | 1 | |
|
Native Village of Sleetmute Sleetmute · Bethel Census Area County |
82 | 8 | 0 | |
|
Wasilla Lacy Laine SD Wasilla · Matanuska-Susitna Borough County |
75 | 3 | 1 | |
|
Saint George Water System Saint George · Aleutians West Census Area County |
65 | 7 | 2 | |
|
Colonial Park S/d Eagle River · Anchorage Municipality County |
63 | 1 | 0 | |
|
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 |
About this data
A system is counted once if any of its violations in the past three years involved Combined Radium (-226 and -228), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Combined Radium (-226 and -228) 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.