B

Big Sky, 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

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

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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

Antler Ridge Homeowners Association

PWSID:
MT0004202
Source:
Ground water
Serves:
50 people

Firelight Meadows Llc

PWSID:
MT0004236
Source:
Ground water
Serves:
350 people

Mt Moonlight Basin

PWSID:
MT0004023
Source:
Ground water
Serves:
355 people

Spanish Peaks Mountain Club

PWSID:
MT0004588
Source:
Ground water
Serves:
40 people

Ramshorn View Estates

PWSID:
MT0004035
Source:
Ground water
Serves:
185 people

Andesite Ridge Water System

PWSID:
MT0004468
Source:
Ground water
Serves:
450 people

Lone View Ridge Water System

PWSID:
MT0004470
Source:
Ground water
Serves:
37 people

Encampment Trail

PWSID:
MT0004916
Source:
Ground water
Serves:
100 people

Lower Pioneer Mountain Water System

PWSID:
MT0004462
Source:
Ground water
Serves:
350 people

Big Sky County Water And Sewer Dist 363

PWSID:
MT0002385
Source:
Ground water
Serves:
4,132 people

EPA & DEP violations

City-wide

20 violations

  • Nitrate-Nitrite — MR violation

    medium severityResolved

    Nitrate-Nitrite MR violation (Resolved).

    EPA SDWIS · MR · Began Apr 1, 2025 · 1 year ago · Source ↗

  • Groundwater Rule — MR violation

    medium severityResolved

    Groundwater Rule MR violation (Resolved).

    EPA SDWIS · MR · Began Jun 1, 2022 · 4 years ago · Source ↗

  • Revised Total Coliform Rule — MON violation

    medium severityResolved

    Revised Total Coliform Rule MON violation (Resolved).

    EPA SDWIS · MON · Began Oct 1, 2021 · 4 years ago · Source ↗

  • Revised Total Coliform Rule — MCL violation

    high severityHealth-basedResolved

    Revised Total Coliform Rule MCL violation (Resolved).

    EPA SDWIS · MCL · Began Sep 1, 2020 · 5 years ago · Source ↗

  • Consumer Confidence Rule — Other violation

    medium severityResolved

    Consumer Confidence Rule Other violation (Resolved).

    EPA SDWIS · Other · Began Jul 1, 2020 · 6 years ago · Source ↗

  • Consumer Confidence Rule — Other violation

    medium severityResolved

    Consumer Confidence Rule Other violation (Resolved).

    EPA SDWIS · Other · Began Jul 1, 2020 · 6 years ago · Source ↗

  • Consumer Confidence Rule — Other violation

    medium severityResolved

    Consumer Confidence Rule Other violation (Resolved).

    EPA SDWIS · Other · Began Jul 1, 2020 · 6 years ago · Source ↗

  • Consumer Confidence Rule — Other violation

    medium severityResolved

    Consumer Confidence Rule Other violation (Resolved).

    EPA SDWIS · Other · Began Jul 1, 2020 · 6 years ago · Source ↗

  • Consumer Confidence Rule — Other violation

    medium severityResolved

    Consumer Confidence Rule Other violation (Resolved).

    EPA SDWIS · Other · Began Jul 1, 2020 · 6 years ago · Source ↗

  • Consumer Confidence Rule — Other violation

    medium severityResolved

    Consumer Confidence Rule Other violation (Resolved).

    EPA SDWIS · Other · Began Jul 1, 2020 · 6 years ago · Source ↗

  • Fluoride — MR violation

    medium severityResolved

    Fluoride MR violation (Resolved).

    EPA SDWIS · MR · Began Jan 1, 2020 · 6 years ago · Source ↗

  • 1,2,4-Trichlorobenzene — MR violation

    medium severityResolved

    1,2,4-Trichlorobenzene MR violation (Resolved).

    EPA SDWIS · MR · Began Jan 1, 2020 · 6 years ago · Source ↗

  • cis-1,2-Dichloroethylene — MR violation

    medium severityResolved

    cis-1,2-Dichloroethylene MR violation (Resolved).

    EPA SDWIS · MR · Began Jan 1, 2020 · 6 years ago · Source ↗

  • Xylenes, Total — MR violation

    medium severityResolved

    Xylenes, Total MR violation (Resolved).

    EPA SDWIS · MR · Began Jan 1, 2020 · 6 years ago · Source ↗

  • o-Dichlorobenzene — MR violation

    medium severityResolved

    o-Dichlorobenzene MR violation (Resolved).

    EPA SDWIS · MR · Began Jan 1, 2020 · 6 years ago · Source ↗

  • 1,2-Dichloropropane — MR violation

    medium severityResolved

    1,2-Dichloropropane MR violation (Resolved).

    EPA SDWIS · MR · Began Jan 1, 2020 · 6 years ago · Source ↗

  • 1,1,2-Trichloroethane — MR violation

    medium severityResolved

    1,1,2-Trichloroethane MR violation (Resolved).

    EPA SDWIS · MR · Began Jan 1, 2020 · 6 years ago · Source ↗

  • Benzene — MR violation

    medium severityResolved

    Benzene MR violation (Resolved).

    EPA SDWIS · MR · Began Jan 1, 2020 · 6 years ago · Source ↗

  • Toluene — MR violation

    medium severityResolved

    Toluene MR violation (Resolved).

    EPA SDWIS · MR · Began Jan 1, 2020 · 6 years ago · Source ↗

  • Ethylbenzene — MR violation

    medium severityResolved

    Ethylbenzene MR violation (Resolved).

    EPA SDWIS · MR · Began Jan 1, 2020 · 6 years ago · Source ↗

Water-related lawsuits

No lawsuits on record.

In the news & sources

No coverage linked yet.