Chefornak, AK
Contamination score
Higher = more contaminated vs. other cities.
Reported illness & cancer claims
No claims reported yet. Be the first to add one.
Claims are aggregated from public records and community reports and may be unverified. If you believe your illness is linked to local water, request a consultation.
Self-reported issues
No issues reported yet. Be the first to report one.

Public water systems
Chefornak Water System
- PWSID:
- AK2270338
- Source:
- Ground water
- Serves:
- 513 people
EPA & DEP violations
Revised Total Coliform Rule — MON violation
medium severityArchivedRevised Total Coliform Rule MON violation (Archived).
EPA SDWIS · MON · Began Dec 1, 2025 · 6 months ago · Source ↗
Public Notice — Other violation
medium severityUnaddressedPublic Notice Other violation (Unaddressed).
EPA SDWIS · Other · Began Oct 15, 2025 · 8 months ago · Source ↗
Revised Total Coliform Rule — MON violation
medium severityResolvedRevised Total Coliform Rule MON violation (Resolved).
EPA SDWIS · MON · Began Apr 1, 2025 · 1 year ago · Source ↗
Endrin — MR violation
medium severityResolvedEndrin MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2025 · 1 year ago · Source ↗
BHC-GAMMA — MR violation
medium severityResolvedBHC-GAMMA MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2025 · 1 year ago · Source ↗
Methoxychlor — MR violation
medium severityResolvedMethoxychlor MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2025 · 1 year ago · Source ↗
Diquat — MR violation
medium severityResolvedDiquat MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2025 · 1 year ago · Source ↗
Glyphosate — MR violation
medium severityResolvedGlyphosate MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2025 · 1 year ago · Source ↗
OXAMYL — MR violation
medium severityResolvedOXAMYL MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2025 · 1 year ago · Source ↗
Simazine — MR violation
medium severityResolvedSimazine MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2025 · 1 year ago · Source ↗
Di(2-ethylhexyl) phthalate — MR violation
medium severityResolvedDi(2-ethylhexyl) phthalate MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2025 · 1 year ago · Source ↗
Picloram — MR violation
medium severityResolvedPicloram MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2025 · 1 year ago · Source ↗
LASSO — MR violation
medium severityResolvedLASSO MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2025 · 1 year ago · Source ↗
2,3,7,8-TCDD — MR violation
medium severityResolved2,3,7,8-TCDD MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2025 · 1 year ago · Source ↗
Heptachlor — MR violation
medium severityResolvedHeptachlor MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2025 · 1 year ago · Source ↗
HEXACHLOROBENZENE — MR violation
medium severityResolvedHEXACHLOROBENZENE MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2025 · 1 year ago · Source ↗
Total Polychlorinated Biphenyls (PCB) — MR violation
medium severityResolvedTotal Polychlorinated Biphenyls (PCB) MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2025 · 1 year ago · Source ↗
ETHYLENE DIBROMIDE — MR violation
medium severityResolvedETHYLENE DIBROMIDE MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2025 · 1 year ago · Source ↗
Chlordane — MR violation
medium severityResolvedChlordane MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2025 · 1 year ago · Source ↗
Dinoseb — MR violation
medium severityResolvedDinoseb MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2025 · 1 year ago · Source ↗
Water-related lawsuits
No lawsuits on record.
In the news & sources
No coverage linked yet.