H

Hopkinton, NH

—no score

Contamination score

Higher = more contaminated vs. other cities.

⚠️38 health-based violations on record.
0
Water sources
48
Violations
0
Pollution sources
0
Self-reported
0
Lawsuits

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Reported illness & cancer claims

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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

Contoocook Village Pct

PWSID:
NH1191010
Source:
Surface water
Serves:
1,600 people

Hopkinton Village Pct

PWSID:
NH1191020
Source:
Ground water
Serves:
215 people

Deer Meadows

PWSID:
NH1193030
Source:
Ground water
Serves:
150 people

The Meadows

PWSID:
NH1193010
Source:
Ground water
Serves:
200 people

Elm Brook Village

PWSID:
NH1193020
Source:
Ground water
Serves:
90 people

EPA & DEP violations

Contoocook Village Pct

PWSID NH119101043 violations

  • Total Haloacetic Acids (HAA5) — MCL violation

    high severityHealth-basedArchived

    Total Haloacetic Acids (HAA5) MCL violation (Archived).

    EPA SDWIS · MCL · Began Jan 1, 2026 · 7 months ago · Source ↗

  • TTHM — MCL violation

    high severityHealth-basedArchived

    TTHM MCL violation (Archived).

    EPA SDWIS · MCL · Began Jan 1, 2026 · 7 months ago · Source ↗

  • Total Haloacetic Acids (HAA5) — MCL violation

    high severityHealth-basedArchived

    Total Haloacetic Acids (HAA5) MCL violation (Archived).

    EPA SDWIS · MCL · Began Oct 1, 2025 · 10 months ago · Source ↗

  • TTHM — MCL violation

    high severityHealth-basedArchived

    TTHM MCL violation (Archived).

    EPA SDWIS · MCL · Began Oct 1, 2025 · 10 months ago · Source ↗

  • MCL exceedance — CONTOOCOOK VILLAGE PCT

    high severityHealth-basedOpen

    EPA SDWIS violation 2600047 (code 02) at CONTOOCOOK VILLAGE PCT (PWSID NH1191010).

    EPA SDWIS · MCL exceedance · Began Oct 1, 2025 · 10 months ago · Source ↗

  • MCL exceedance — CONTOOCOOK VILLAGE PCT

    high severityHealth-basedOpen

    EPA SDWIS violation 2600048 (code 02) at CONTOOCOOK VILLAGE PCT (PWSID NH1191010).

    EPA SDWIS · MCL exceedance · Began Oct 1, 2025 · 10 months ago · Source ↗

  • TTHM — MCL violation

    high severityHealth-basedArchived

    TTHM MCL violation (Archived).

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

  • Total Haloacetic Acids (HAA5) — MCL violation

    high severityHealth-basedArchived

    Total Haloacetic Acids (HAA5) MCL violation (Archived).

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

  • MCL exceedance — CONTOOCOOK VILLAGE PCT

    high severityHealth-basedOpen

    EPA SDWIS violation 2500045 (code 02) at CONTOOCOOK VILLAGE PCT (PWSID NH1191010).

    EPA SDWIS · MCL exceedance · Began Jul 1, 2025 · 1 year ago · Source ↗

  • MCL exceedance — CONTOOCOOK VILLAGE PCT

    high severityHealth-basedOpen

    EPA SDWIS violation 2500046 (code 02) at CONTOOCOOK VILLAGE PCT (PWSID NH1191010).

    EPA SDWIS · MCL exceedance · Began Jul 1, 2025 · 1 year ago · Source ↗

  • TTHM — MCL violation

    high severityHealth-basedArchived

    TTHM MCL violation (Archived).

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

  • Total Haloacetic Acids (HAA5) — MCL violation

    high severityHealth-basedArchived

    Total Haloacetic Acids (HAA5) MCL violation (Archived).

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

  • MCL exceedance — CONTOOCOOK VILLAGE PCT

    high severityHealth-basedOpen

    EPA SDWIS violation 2500043 (code 02) at CONTOOCOOK VILLAGE PCT (PWSID NH1191010).

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

  • MCL exceedance — CONTOOCOOK VILLAGE PCT

    high severityHealth-basedOpen

    EPA SDWIS violation 2500044 (code 02) at CONTOOCOOK VILLAGE PCT (PWSID NH1191010).

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

  • TTHM — MCL violation

    high severityHealth-basedArchived

    TTHM MCL violation (Archived).

    EPA SDWIS · MCL · Began Jan 1, 2025 · 1 year ago · Source ↗

  • Total Haloacetic Acids (HAA5) — MCL violation

    high severityHealth-basedArchived

    Total Haloacetic Acids (HAA5) MCL violation (Archived).

    EPA SDWIS · MCL · Began Jan 1, 2025 · 1 year ago · Source ↗

  • MCL exceedance — CONTOOCOOK VILLAGE PCT

    high severityHealth-basedOpen

    EPA SDWIS violation 2500041 (code 02) at CONTOOCOOK VILLAGE PCT (PWSID NH1191010).

    EPA SDWIS · MCL exceedance · Began Jan 1, 2025 · 1 year ago · Source ↗

  • MCL exceedance — CONTOOCOOK VILLAGE PCT

    high severityHealth-basedOpen

    EPA SDWIS violation 2500042 (code 02) at CONTOOCOOK VILLAGE PCT (PWSID NH1191010).

    EPA SDWIS · MCL exceedance · Began Jan 1, 2025 · 1 year ago · Source ↗

  • TTHM — MCL violation

    high severityHealth-basedArchived

    TTHM MCL violation (Archived).

    EPA SDWIS · MCL · Began Oct 1, 2024 · 1 year ago · Source ↗

  • Total Haloacetic Acids (HAA5) — MCL violation

    high severityHealth-basedArchived

    Total Haloacetic Acids (HAA5) MCL violation (Archived).

    EPA SDWIS · MCL · Began Oct 1, 2024 · 1 year ago · Source ↗

  • MCL exceedance — CONTOOCOOK VILLAGE PCT

    high severityHealth-basedOpen

    EPA SDWIS violation 2500039 (code 02) at CONTOOCOOK VILLAGE PCT (PWSID NH1191010).

    EPA SDWIS · MCL exceedance · Began Oct 1, 2024 · 1 year ago · Source ↗

  • MCL exceedance — CONTOOCOOK VILLAGE PCT

    high severityHealth-basedOpen

    EPA SDWIS violation 2500040 (code 02) at CONTOOCOOK VILLAGE PCT (PWSID NH1191010).

    EPA SDWIS · MCL exceedance · Began Oct 1, 2024 · 1 year ago · Source ↗

  • Total Haloacetic Acids (HAA5) — MCL violation

    high severityHealth-basedArchived

    Total Haloacetic Acids (HAA5) MCL violation (Archived).

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

  • TTHM — MCL violation

    high severityHealth-basedArchived

    TTHM MCL violation (Archived).

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

  • MCL exceedance — CONTOOCOOK VILLAGE PCT

    high severityHealth-basedOpen

    EPA SDWIS violation 2400037 (code 02) at CONTOOCOOK VILLAGE PCT (PWSID NH1191010).

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

  • MCL exceedance — CONTOOCOOK VILLAGE PCT

    high severityHealth-basedOpen

    EPA SDWIS violation 2400038 (code 02) at CONTOOCOOK VILLAGE PCT (PWSID NH1191010).

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

  • Surface Water Treatment Rule — TT violation

    high severityHealth-basedResolved

    Surface Water Treatment Rule TT violation (Resolved).

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

  • Treatment technique violation — CONTOOCOOK VILLAGE PCT

    high severityHealth-basedResolved

    EPA SDWIS violation 2400033 (code 41) at CONTOOCOOK VILLAGE PCT (PWSID NH1191010).

    EPA SDWIS · Treatment technique violation · Began May 1, 2024 · 2 years ago · Source ↗

  • MCL exceedance — CONTOOCOOK VILLAGE PCT

    high severityHealth-basedOpen

    EPA SDWIS violation 2400034 (code 02) at CONTOOCOOK VILLAGE PCT (PWSID NH1191010).

    EPA SDWIS · MCL exceedance · Began Apr 1, 2024 · 2 years ago · Source ↗

  • MCL exceedance — CONTOOCOOK VILLAGE PCT

    high severityHealth-basedOpen

    EPA SDWIS violation 2400036 (code 02) at CONTOOCOOK VILLAGE PCT (PWSID NH1191010).

    EPA SDWIS · MCL exceedance · Began Apr 1, 2024 · 2 years ago · Source ↗

  • Monitoring violation — CONTOOCOOK VILLAGE PCT

    low severityOpen

    EPA SDWIS violation 2400031 (code 36) at CONTOOCOOK VILLAGE PCT (PWSID NH1191010).

    EPA SDWIS · Monitoring violation · Began Jan 1, 2024 · 2 years ago · Source ↗

  • MCL exceedance — CONTOOCOOK VILLAGE PCT

    high severityHealth-basedOpen

    EPA SDWIS violation 2400032 (code 02) at CONTOOCOOK VILLAGE PCT (PWSID NH1191010).

    EPA SDWIS · MCL exceedance · Began Jan 1, 2024 · 2 years ago · Source ↗

  • MCL exceedance — CONTOOCOOK VILLAGE PCT

    high severityHealth-basedResolved

    EPA SDWIS violation 2100029 (code 02) at CONTOOCOOK VILLAGE PCT (PWSID NH1191010).

    EPA SDWIS · MCL exceedance · Began Jul 1, 2021 · 5 years ago · Source ↗

  • MCL exceedance — CONTOOCOOK VILLAGE PCT

    high severityHealth-basedResolved

    EPA SDWIS violation 2100028 (code 02) at CONTOOCOOK VILLAGE PCT (PWSID NH1191010).

    EPA SDWIS · MCL exceedance · Began Apr 1, 2021 · 5 years ago · Source ↗

  • MCL exceedance — CONTOOCOOK VILLAGE PCT

    high severityHealth-basedResolved

    EPA SDWIS violation 2100027 (code 02) at CONTOOCOOK VILLAGE PCT (PWSID NH1191010).

    EPA SDWIS · MCL exceedance · Began Jan 1, 2021 · 5 years ago · Source ↗

  • MCL exceedance — CONTOOCOOK VILLAGE PCT

    high severityHealth-basedResolved

    EPA SDWIS violation 2100026 (code 02) at CONTOOCOOK VILLAGE PCT (PWSID NH1191010).

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

  • MCL exceedance — CONTOOCOOK VILLAGE PCT

    high severityHealth-basedResolved

    EPA SDWIS violation 2000025 (code 02) at CONTOOCOOK VILLAGE PCT (PWSID NH1191010).

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

  • MCL exceedance — CONTOOCOOK VILLAGE PCT

    high severityHealth-basedResolved

    EPA SDWIS violation 2000024 (code 02) at CONTOOCOOK VILLAGE PCT (PWSID NH1191010).

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

  • MCL exceedance — CONTOOCOOK VILLAGE PCT

    high severityHealth-basedResolved

    EPA SDWIS violation 2000023 (code 02) at CONTOOCOOK VILLAGE PCT (PWSID NH1191010).

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

  • Monitoring violation — CONTOOCOOK VILLAGE PCT

    low severityOpen

    EPA SDWIS violation 1900018 (code 36) at CONTOOCOOK VILLAGE PCT (PWSID NH1191010).

    EPA SDWIS · Monitoring violation · Began Feb 1, 2019 · 7 years ago · Source ↗

  • Monitoring violation — CONTOOCOOK VILLAGE PCT

    low severityOpen

    EPA SDWIS violation 1900017 (code 36) at CONTOOCOOK VILLAGE PCT (PWSID NH1191010).

    EPA SDWIS · Monitoring violation · Began Dec 1, 2018 · 7 years ago · Source ↗

  • Monitoring violation — CONTOOCOOK VILLAGE PCT

    low severityResolved

    EPA SDWIS violation 1800015 (code 27) at CONTOOCOOK VILLAGE PCT (PWSID NH1191010).

    EPA SDWIS · Monitoring violation · Began Jan 1, 2018 · 8 years ago · Source ↗

  • Monitoring violation — CONTOOCOOK VILLAGE PCT

    low severityResolved

    EPA SDWIS violation 1800016 (code 27) at CONTOOCOOK VILLAGE PCT (PWSID NH1191010).

    EPA SDWIS · Monitoring violation · Began Jan 1, 2018 · 8 years ago · Source ↗

City-wide

5 violations

  • Arsenic — MR violation

    medium severityArchived

    Arsenic MR violation (Archived).

    EPA SDWIS · MR · Began Jan 1, 2026 · 7 months ago · Source ↗

  • Revised Total Coliform Rule — RPT violation

    medium severityResolved

    Revised Total Coliform Rule RPT violation (Resolved).

    EPA SDWIS · RPT · Began Nov 12, 2024 · 1 year ago · Source ↗

  • Revised Total Coliform Rule — MON violation

    medium severityResolved

    Revised Total Coliform Rule MON violation (Resolved).

    EPA SDWIS · MON · Began Oct 1, 2024 · 1 year ago · Source ↗

  • Revised Total Coliform Rule — RPT violation

    medium severityResolved

    Revised Total Coliform Rule RPT violation (Resolved).

    EPA SDWIS · RPT · Began Aug 13, 2024 · 1 year ago · Source ↗

  • Revised Total Coliform Rule — MON violation

    medium severityResolved

    Revised Total Coliform Rule MON violation (Resolved).

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

Water-related lawsuits

No lawsuits on record.

In the news & sources

No coverage linked yet.