E. coli (Escherichia coli) violations in Alaska
29 active public water systems in Alaska had a E. coli (Escherichia coli) violation in the past three years, 19 of them in the latest quarter of EPA's data. What E. coli (Escherichia coli) is and why it matters.
Systems with a E. coli (Escherichia coli) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Toksook Bay Water System Toksook Bay · Bethel Census Area County |
661 | 5 | 2 | |
|
Egegik Egegik · Lake and Peninsula Borough County |
485 | 3 | 1 | |
|
Silver Bay Seafoods False Pass False Pass · Aleutians East Borough County |
470 | 7 | 0 | |
|
Leader Creek Bunkhouse #1 Naknek · Bristol Bay Borough County |
422 | 1 | 1 | |
|
Lower Kalskag Water System Kalskag Upper / Lower · Bethel Census Area County |
302 | 5 | 2 | |
|
Little Beaver Camp Main Qtrs Big Lake · Matanuska-Susitna Borough County |
208 | 2 | 1 | |
|
Grayling Water System Grayling · Yukon-Koyukuk Census Area County |
207 | 13 | 2 | |
|
Chignik Lake Water System Chignik Lake · Lake and Peninsula Borough County |
200 | 6 | 3 | |
|
Wales Water System Wales · Nome Census Area County |
173 | 9 | 2 | |
|
Clarks Point Water System Clarks Point · Dillingham Census Area County |
128 | 6 | 2 | |
|
Kako Retreat Center Russian Mission · County |
122 | 4 | 2 | |
|
Camp Togowoods-Beaver Lodge Wasilla · Matanuska-Susitna Borough County |
102 | 1 | 1 | |
|
The Pit Milepost 3.1 AK Peninsula Hwy Naknek · Bristol Bay Borough County |
90 | 2 | 1 | |
|
Nelson Lagoon Water System Nelson Lagoon · Aleutians East Borough County |
60 | 8 | 0 | |
|
Ksd George Morgan High School Aniak · Bethel Census Area County |
50 | 4 | 1 | |
|
Bristol Bay Lodge Dillingham · Dillingham Census Area County |
46 | 3 | 1 | |
|
Camp Creekside Seward · Kenai Peninsula Borough County |
46 | 2 | 0 | |
|
Four Corners Lounge Wasilla · Matanuska-Susitna Borough County |
33 | 2 | 1 | |
|
Camp la DA SA Willow · Matanuska-Susitna Borough County |
32 | 2 | 1 | |
|
Alakanuk Water System Alakanuk · County |
570 | 14 | 2 | |
|
Kwigillingok Washeteria Kwigillingok · Bethel Census Area County |
400 | 10 | 0 | |
|
Lksd Tununak Paul Albert HS Tununak · Bethel Census Area County |
385 | 9 | 0 | |
|
Larsen Bay Water System Larsen Bay · Kodiak Island Borough County |
271 | 11 | 0 | |
|
Lksd Nightmute HS & Elem Nightmute · Bethel Census Area County |
259 | 7 | 0 | |
|
Nunam Iqua Water System Nunam Iqua · Bethel Census Area County |
213 | 11 | 1 | |
|
Igiugig Water System Igiugig · Lake and Peninsula Borough County |
100 | 4 | 0 | |
|
Akutan Akutan · Aleutians East Borough County |
95 | 10 | 0 | |
|
Badami Savant North Slope Borough County |
84 | 1 | 0 | |
|
Native Village of Sleetmute Sleetmute · Bethel Census Area County |
82 | 8 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved E. coli (Escherichia coli), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not E. coli (Escherichia coli) 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.