W

West Yellowstone, MT

—no score

Contamination score

Higher = more contaminated vs. other cities.

⚠️1 health-based violation on record.
0
Water sources
20
Violations
0
Pollution sources
0
Self-reported
0
Lawsuits

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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.

Critical High Medium Reported claim

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Public water systems

West Yellowstone Town Of

PWSID:
MT0003136
Source:
Ground water
Serves:
9,899 people

Yellowstone Holiday Wtr And Sew District

PWSID:
MT0001326
Source:
Ground water
Serves:
85 people

Hebgen Lake Estates Co Water Sewer Distr

PWSID:
MT0001983
Source:
Ground water
Serves:
230 people

Fishermans Village Subdivision

PWSID:
MT0004722
Source:
Ground water
Serves:
25 people

EPA & DEP violations

City-wide

20 violations

  • Revised Total Coliform Rule — TT violation

    high severityHealth-basedUnaddressed

    Revised Total Coliform Rule TT violation (Unaddressed).

    EPA SDWIS · TT · Began Jan 1, 2026 · 6 months ago · Source ↗

  • E. COLI — MR violation

    medium severityResolved

    E. COLI MR violation (Resolved).

    EPA SDWIS · MR · Began Nov 15, 2025 · 8 months ago · Source ↗

  • Consumer Confidence Rule — Other violation

    medium severityUnaddressed

    Consumer Confidence Rule Other violation (Unaddressed).

    EPA SDWIS · Other · Began Oct 1, 2025 · 9 months ago · Source ↗

  • Endrin — MR violation

    medium severityResolved

    Endrin MR violation (Resolved).

    EPA SDWIS · MR · Began Oct 1, 2025 · 9 months ago · Source ↗

  • Toxaphene — MR violation

    medium severityResolved

    Toxaphene MR violation (Resolved).

    EPA SDWIS · MR · Began Oct 1, 2025 · 9 months ago · Source ↗

  • OXAMYL — MR violation

    medium severityResolved

    OXAMYL MR violation (Resolved).

    EPA SDWIS · MR · Began Oct 1, 2025 · 9 months ago · Source ↗

  • Simazine — MR violation

    medium severityResolved

    Simazine MR violation (Resolved).

    EPA SDWIS · MR · Began Oct 1, 2025 · 9 months ago · Source ↗

  • Di(2-ethylhexyl) phthalate — MR violation

    medium severityResolved

    Di(2-ethylhexyl) phthalate MR violation (Resolved).

    EPA SDWIS · MR · Began Oct 1, 2025 · 9 months ago · Source ↗

  • Dinoseb — MR violation

    medium severityResolved

    Dinoseb MR violation (Resolved).

    EPA SDWIS · MR · Began Oct 1, 2025 · 9 months ago · Source ↗

  • LASSO — MR violation

    medium severityResolved

    LASSO MR violation (Resolved).

    EPA SDWIS · MR · Began Oct 1, 2025 · 9 months ago · Source ↗

  • Heptachlor — MR violation

    medium severityResolved

    Heptachlor MR violation (Resolved).

    EPA SDWIS · MR · Began Oct 1, 2025 · 9 months ago · Source ↗

  • Heptachlor epoxide — MR violation

    medium severityResolved

    Heptachlor epoxide MR violation (Resolved).

    EPA SDWIS · MR · Began Oct 1, 2025 · 9 months ago · Source ↗

  • 2,4,5-TP — MR violation

    medium severityResolved

    2,4,5-TP MR violation (Resolved).

    EPA SDWIS · MR · Began Oct 1, 2025 · 9 months ago · Source ↗

  • HEXACHLOROBENZENE — MR violation

    medium severityResolved

    HEXACHLOROBENZENE MR violation (Resolved).

    EPA SDWIS · MR · Began Oct 1, 2025 · 9 months ago · Source ↗

  • Benzo(a)pyrene — MR violation

    medium severityResolved

    Benzo(a)pyrene MR violation (Resolved).

    EPA SDWIS · MR · Began Oct 1, 2025 · 9 months ago · Source ↗

  • Pentachlorophenol — MR violation

    medium severityResolved

    Pentachlorophenol MR violation (Resolved).

    EPA SDWIS · MR · Began Oct 1, 2025 · 9 months ago · Source ↗

  • Hexachlorocyclopentadiene — MR violation

    medium severityResolved

    Hexachlorocyclopentadiene MR violation (Resolved).

    EPA SDWIS · MR · Began Oct 1, 2025 · 9 months ago · Source ↗

  • Picloram — MR violation

    medium severityResolved

    Picloram MR violation (Resolved).

    EPA SDWIS · MR · Began Oct 1, 2025 · 9 months ago · Source ↗

  • Methoxychlor — MR violation

    medium severityResolved

    Methoxychlor MR violation (Resolved).

    EPA SDWIS · MR · Began Oct 1, 2025 · 9 months ago · Source ↗

  • Chlordane — MR violation

    medium severityResolved

    Chlordane MR violation (Resolved).

    EPA SDWIS · MR · Began Oct 1, 2025 · 9 months ago · Source ↗

Water-related lawsuits

No lawsuits on record.

In the news & sources

No coverage linked yet.