N

Nantucket, MA

—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

Wannacomet Water Company

PWSID:
MA4197000
Source:
Ground water
Serves:
27,703 people

Siasconset Water Department

PWSID:
MA4197001
Source:
Ground water
Serves:
3,000 people

EPA & DEP violations

Wannacomet Water Company

PWSID MA419700017 violations

  • Consumer Confidence Rule — Other violation

    medium severityUnaddressed

    Consumer Confidence Rule Other violation (Unaddressed).

    EPA SDWIS · Other · Began Jul 2, 2025 · 1 year ago · Source ↗

  • Lead and Copper Rule — MR violation

    medium severityAddressed

    Lead and Copper Rule MR violation (Addressed).

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

  • Nitrate — MR violation

    medium severityArchived

    Nitrate MR violation (Archived).

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

  • Nitrite — MR violation

    medium severityArchived

    Nitrite MR violation (Archived).

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

  • Consumer Confidence Rule — Other violation

    medium severityResolved

    Consumer Confidence Rule Other violation (Resolved).

    EPA SDWIS · Other · Began Jul 1, 2022 · 4 years ago · Source ↗

  • Nitrate — MR violation

    medium severityArchived

    Nitrate MR violation (Archived).

    EPA SDWIS · MR · Began Jul 1, 2016 · 10 years ago · Source ↗

  • Coliform (TCR) — MCL violation

    high severityHealth-basedResolved

    Coliform (TCR) MCL violation (Resolved).

    EPA SDWIS · MCL · Began May 1, 2015 · 11 years ago · Source ↗

  • Benzene — MR violation

    medium severityArchived

    Benzene MR violation (Archived).

    EPA SDWIS · MR · Began Apr 1, 2015 · 11 years ago · Source ↗

  • Carbon tetrachloride — MR violation

    medium severityArchived

    Carbon tetrachloride MR violation (Archived).

    EPA SDWIS · MR · Began Apr 1, 2015 · 11 years ago · Source ↗

  • 1,1-Dichloroethylene — MR violation

    medium severityArchived

    1,1-Dichloroethylene MR violation (Archived).

    EPA SDWIS · MR · Began Apr 1, 2015 · 11 years ago · Source ↗

  • 1,2-Dichloroethane — MR violation

    medium severityArchived

    1,2-Dichloroethane MR violation (Archived).

    EPA SDWIS · MR · Began Apr 1, 2015 · 11 years ago · Source ↗

  • 1,1,1-Trichloroethane — MR violation

    medium severityArchived

    1,1,1-Trichloroethane MR violation (Archived).

    EPA SDWIS · MR · Began Apr 1, 2015 · 11 years ago · Source ↗

  • CHLOROBENZENE — MR violation

    medium severityArchived

    CHLOROBENZENE MR violation (Archived).

    EPA SDWIS · MR · Began Apr 1, 2015 · 11 years ago · Source ↗

  • o-Dichlorobenzene — MR violation

    medium severityArchived

    o-Dichlorobenzene MR violation (Archived).

    EPA SDWIS · MR · Began Apr 1, 2015 · 11 years ago · Source ↗

  • trans-1,2-Dichloroethylene — MR violation

    medium severityArchived

    trans-1,2-Dichloroethylene MR violation (Archived).

    EPA SDWIS · MR · Began Apr 1, 2015 · 11 years ago · Source ↗

  • Styrene — MR violation

    medium severityArchived

    Styrene MR violation (Archived).

    EPA SDWIS · MR · Began Apr 1, 2015 · 11 years ago · Source ↗

  • Toluene — MR violation

    medium severityArchived

    Toluene MR violation (Archived).

    EPA SDWIS · MR · Began Apr 1, 2015 · 11 years ago · Source ↗

Siasconset Water Department

PWSID MA41970013 violations

  • Consumer Confidence Rule — Other violation

    medium severityUnaddressed

    Consumer Confidence Rule Other violation (Unaddressed).

    EPA SDWIS · Other · Began Jul 2, 2025 · 1 year ago · Source ↗

  • Nitrate — MR violation

    medium severityArchived

    Nitrate MR violation (Archived).

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

  • Consumer Confidence Rule — Other violation

    medium severityResolved

    Consumer Confidence Rule Other violation (Resolved).

    EPA SDWIS · Other · Began Jul 1, 2022 · 4 years ago · Source ↗

Water-related lawsuits

No lawsuits on record.

In the news & sources

No coverage linked yet.