Twin Hills, AK
Contamination score
Higher = more contaminated vs. other cities.
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Reported illness & cancer claims
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Self-reported issues
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Pollution sources & reported claims near your water
Factories, greenhouses, and contaminated sites mapped around the water supply. Tap any circle for detail.
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Public water systems
Twin Hills Water System
- PWSID:
- AK2260032
- Source:
- Ground water
- Serves:
- 87 people
EPA & DEP violations
City-wide
20 violationsRevised Total Coliform Rule — MON violation
medium severityArchivedRevised Total Coliform Rule MON violation (Archived).
EPA SDWIS · MON · Began Feb 1, 2026 · 6 months ago · Source ↗
Lead and Copper Rule — MR violation
medium severityUnaddressedLead and Copper Rule MR violation (Unaddressed).
EPA SDWIS · MR · Began Jan 1, 2026 · 7 months ago · Source ↗
Revised Total Coliform Rule — MON violation
medium severityResolvedRevised Total Coliform Rule MON violation (Resolved).
EPA SDWIS · MON · Began Oct 1, 2025 · 10 months ago · Source ↗
Endrin — MR violation
medium severityResolvedEndrin MR violation (Resolved).
EPA SDWIS · MR · Began Oct 1, 2025 · 10 months ago · Source ↗
BHC-GAMMA — MR violation
medium severityResolvedBHC-GAMMA MR violation (Resolved).
EPA SDWIS · MR · Began Oct 1, 2025 · 10 months ago · Source ↗
Methoxychlor — MR violation
medium severityResolvedMethoxychlor MR violation (Resolved).
EPA SDWIS · MR · Began Oct 1, 2025 · 10 months ago · Source ↗
Diquat — MR violation
medium severityResolvedDiquat MR violation (Resolved).
EPA SDWIS · MR · Began Oct 1, 2025 · 10 months ago · Source ↗
OXAMYL — MR violation
medium severityResolvedOXAMYL MR violation (Resolved).
EPA SDWIS · MR · Began Oct 1, 2025 · 10 months ago · Source ↗
Dinoseb — MR violation
medium severityResolvedDinoseb MR violation (Resolved).
EPA SDWIS · MR · Began Oct 1, 2025 · 10 months ago · Source ↗
Hexachlorocyclopentadiene — MR violation
medium severityResolvedHexachlorocyclopentadiene MR violation (Resolved).
EPA SDWIS · MR · Began Oct 1, 2025 · 10 months ago · Source ↗
LASSO — MR violation
medium severityResolvedLASSO MR violation (Resolved).
EPA SDWIS · MR · Began Oct 1, 2025 · 10 months ago · Source ↗
Heptachlor — MR violation
medium severityResolvedHeptachlor MR violation (Resolved).
EPA SDWIS · MR · Began Oct 1, 2025 · 10 months ago · Source ↗
2,4-D — MR violation
medium severityResolved2,4-D MR violation (Resolved).
EPA SDWIS · MR · Began Oct 1, 2025 · 10 months ago · Source ↗
2,4,5-TP — MR violation
medium severityResolved2,4,5-TP MR violation (Resolved).
EPA SDWIS · MR · Began Oct 1, 2025 · 10 months ago · Source ↗
Total Polychlorinated Biphenyls (PCB) — MR violation
medium severityResolvedTotal Polychlorinated Biphenyls (PCB) MR violation (Resolved).
EPA SDWIS · MR · Began Oct 1, 2025 · 10 months ago · Source ↗
1,2-DIBROMO-3-CHLOROPROPANE — MR violation
medium severityResolved1,2-DIBROMO-3-CHLOROPROPANE MR violation (Resolved).
EPA SDWIS · MR · Began Oct 1, 2025 · 10 months ago · Source ↗
ETHYLENE DIBROMIDE — MR violation
medium severityResolvedETHYLENE DIBROMIDE MR violation (Resolved).
EPA SDWIS · MR · Began Oct 1, 2025 · 10 months ago · Source ↗
Chlordane — MR violation
medium severityResolvedChlordane MR violation (Resolved).
EPA SDWIS · MR · Began Oct 1, 2025 · 10 months ago · Source ↗
Consumer Confidence Rule — Other violation
medium severityResolvedConsumer Confidence Rule Other violation (Resolved).
EPA SDWIS · Other · Began Oct 1, 2025 · 10 months ago · Source ↗
Heptachlor epoxide — MR violation
medium severityResolvedHeptachlor epoxide MR violation (Resolved).
EPA SDWIS · MR · Began Oct 1, 2025 · 10 months ago · Source ↗
Water-related lawsuits
No lawsuits on record.
In the news & sources
No coverage linked yet.