Y

Yellowstone Np, WY

—no score

Contamination score

Higher = more contaminated vs. other cities.

⚠️10 health-based violations 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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Public water systems

Ynp-Mammoth Hot Springs

PWSID:
WY5680092
Source:
Surface water
Serves:
2,600 people

Ynp-Old Faithful

PWSID:
WY5680085
Source:
Surface water
Serves:
7,675 people

EPA & DEP violations

Ynp-Mammoth Hot Springs

PWSID WY56800923 violations

  • Surface Water Treatment Rule — MR violation

    medium severityResolved

    Surface Water Treatment Rule MR violation (Resolved).

    EPA SDWIS · MR · Began Aug 1, 2023 · 3 years ago · Source ↗

  • Total Haloacetic Acids (HAA5) — MR violation

    medium severityResolved

    Total Haloacetic Acids (HAA5) MR violation (Resolved).

    EPA SDWIS · MR · Began Jun 1, 2017 · 9 years ago · Source ↗

  • TTHM — MR violation

    medium severityResolved

    TTHM MR violation (Resolved).

    EPA SDWIS · MR · Began Jun 1, 2017 · 9 years ago · Source ↗

City-wide

17 violations

  • Lead and Copper Rule — MR violation

    medium severityResolved

    Lead and Copper Rule MR violation (Resolved).

    EPA SDWIS · MR · Began Jul 1, 2024 · 2 years ago · Source ↗

  • Lead and Copper Rule — TT violation

    high severityHealth-basedResolved

    Lead and Copper Rule TT violation (Resolved).

    EPA SDWIS · TT · Began Jul 1, 2024 · 2 years ago · Source ↗

  • Lead and Copper Rule — TT violation

    high severityHealth-basedResolved

    Lead and Copper Rule TT violation (Resolved).

    EPA SDWIS · TT · Began Jun 1, 2024 · 2 years ago · Source ↗

  • Lead and Copper Rule — TT violation

    high severityHealth-basedResolved

    Lead and Copper Rule TT violation (Resolved).

    EPA SDWIS · TT · Began Mar 1, 2024 · 2 years ago · Source ↗

  • Lead and Copper Rule — MR violation

    medium severityResolved

    Lead and Copper Rule MR violation (Resolved).

    EPA SDWIS · MR · Began Dec 30, 2023 · 2 years ago · Source ↗

  • Lead and Copper Rule — TT violation

    high severityHealth-basedResolved

    Lead and Copper Rule TT violation (Resolved).

    EPA SDWIS · TT · Began Nov 30, 2023 · 2 years ago · Source ↗

  • Lead and Copper Rule — MR violation

    medium severityResolved

    Lead and Copper Rule MR violation (Resolved).

    EPA SDWIS · MR · Began Oct 1, 2023 · 2 years ago · Source ↗

  • Arsenic — MCL violation

    high severityHealth-basedResolved

    Arsenic MCL violation (Resolved).

    EPA SDWIS · MCL · Began Oct 1, 2023 · 2 years ago · Source ↗

  • Arsenic — MCL violation

    high severityHealth-basedResolved

    Arsenic MCL violation (Resolved).

    EPA SDWIS · MCL · Began Jul 1, 2023 · 3 years ago · Source ↗

  • Total Haloacetic Acids (HAA5) — MR violation

    medium severityResolved

    Total Haloacetic Acids (HAA5) MR violation (Resolved).

    EPA SDWIS · MR · Began Jul 1, 2023 · 3 years ago · Source ↗

  • TTHM — MR violation

    medium severityResolved

    TTHM MR violation (Resolved).

    EPA SDWIS · MR · Began Jul 1, 2023 · 3 years ago · Source ↗

  • Arsenic — MCL violation

    high severityHealth-basedResolved

    Arsenic MCL violation (Resolved).

    EPA SDWIS · MCL · Began Apr 1, 2023 · 3 years ago · Source ↗

  • Long Term 2 Enhanced Surface Water Treatment Rule — TT violation

    high severityHealth-basedResolved

    Long Term 2 Enhanced Surface Water Treatment Rule TT violation (Resolved).

    EPA SDWIS · TT · Began Sep 17, 2022 · 3 years ago · Source ↗

  • Interim Enhanced Surface Water Treatment Rule — TT violation

    high severityHealth-basedResolved

    Interim Enhanced Surface Water Treatment Rule TT violation (Resolved).

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

  • Surface Water Treatment Rule — MR violation

    medium severityResolved

    Surface Water Treatment Rule MR violation (Resolved).

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

  • Arsenic — MCL violation

    high severityHealth-basedResolved

    Arsenic MCL violation (Resolved).

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

Water-related lawsuits

No lawsuits on record.

In the news & sources

No coverage linked yet.