Canaan, NH
Contamination score
Higher = more contaminated vs. other cities.
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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.
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Public water systems
Mascoma Valley Coop
- PWSID:
- NH0353020
- Source:
- Ground water
- Serves:
- 73 people
Country Village MHP
- PWSID:
- NH0353010
- Source:
- Ground water
- Serves:
- 66 people
Cardigan Mountain Sch
- PWSID:
- NH0354010
- Source:
- Ground water
- Serves:
- 300 people
Canaan Water Dept
- PWSID:
- NH0351010
- Source:
- Surface water
- Serves:
- 684 people
EPA & DEP violations
Mascoma Valley Coop
PWSID NH03530202 violationsOther violation — MASCOMA VALLEY COOP
low severityResolvedEPA SDWIS violation 0800010 (code 71) at MASCOMA VALLEY COOP (PWSID NH0353020).
EPA SDWIS · Other violation · Began Jul 1, 2008 · 18 years ago · Source ↗
Other violation — MASCOMA VALLEY COOP
low severityResolvedEPA SDWIS violation 0600009 (code 75) at MASCOMA VALLEY COOP (PWSID NH0353020).
EPA SDWIS · Other violation · Began Feb 6, 2006 · 20 years ago · Source ↗
City-wide
20 violationsLead and Copper Rule — MR violation
medium severityResolvedLead and Copper Rule MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2026 · 7 months ago · Source ↗
Lead and Copper Rule — MR violation
medium severityResolvedLead and Copper Rule MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2026 · 7 months ago · Source ↗
Combined Radium (-226 and -228) — MCL violation
high severityHealth-basedArchivedCombined Radium (-226 and -228) MCL violation (Archived).
EPA SDWIS · MCL · Began Jan 1, 2026 · 7 months ago · Source ↗
TTHM — MR violation
medium severityResolvedTTHM MR violation (Resolved).
EPA SDWIS · MR · Began Jul 1, 2025 · 1 year ago · Source ↗
Total Haloacetic Acids (HAA5) — MR violation
medium severityResolvedTotal Haloacetic Acids (HAA5) MR violation (Resolved).
EPA SDWIS · MR · Began Jul 1, 2025 · 1 year ago · Source ↗
TTHM — MR violation
medium severityResolvedTTHM MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2025 · 1 year ago · Source ↗
Total Haloacetic Acids (HAA5) — MR violation
medium severityResolvedTotal Haloacetic Acids (HAA5) MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2025 · 1 year ago · Source ↗
Lead and Copper Rule — MR violation
medium severityResolvedLead and Copper Rule MR violation (Resolved).
EPA SDWIS · MR · Began Oct 1, 2024 · 1 year ago · Source ↗
TTHM — MR violation
medium severityResolvedTTHM MR violation (Resolved).
EPA SDWIS · MR · Began Oct 1, 2024 · 1 year ago · Source ↗
Total Haloacetic Acids (HAA5) — MR violation
medium severityResolvedTotal Haloacetic Acids (HAA5) MR violation (Resolved).
EPA SDWIS · MR · Began Oct 1, 2024 · 1 year ago · Source ↗
Revised Total Coliform Rule — RPT violation
medium severityResolvedRevised Total Coliform Rule RPT violation (Resolved).
EPA SDWIS · RPT · Began Aug 15, 2024 · 1 year ago · Source ↗
Revised Total Coliform Rule — MON violation
medium severityResolvedRevised Total Coliform Rule MON violation (Resolved).
EPA SDWIS · MON · Began Jul 1, 2024 · 2 years ago · Source ↗
Combined Radium (-226 and -228) — MCL violation
high severityHealth-basedResolvedCombined Radium (-226 and -228) MCL violation (Resolved).
EPA SDWIS · MCL · Began Jul 1, 2023 · 3 years ago · Source ↗
Combined Radium (-226 and -228) — MCL violation
high severityHealth-basedResolvedCombined Radium (-226 and -228) MCL violation (Resolved).
EPA SDWIS · MCL · Began Apr 1, 2023 · 3 years ago · Source ↗
Public Notice — Other violation
medium severityUnaddressedPublic Notice Other violation (Unaddressed).
EPA SDWIS · Other · Began Mar 2, 2023 · 3 years ago · Source ↗
Public Notice — Other violation
medium severityUnaddressedPublic Notice Other violation (Unaddressed).
EPA SDWIS · Other · Began Mar 2, 2023 · 3 years ago · Source ↗
Public Notice — Other violation
medium severityResolvedPublic Notice Other violation (Resolved).
EPA SDWIS · Other · Began Oct 19, 2022 · 3 years ago · Source ↗
Public Notice — Other violation
medium severityResolvedPublic Notice Other violation (Resolved).
EPA SDWIS · Other · Began Oct 19, 2022 · 3 years ago · Source ↗
Lead and Copper Rule — MR violation
medium severityResolvedLead and Copper Rule MR violation (Resolved).
EPA SDWIS · MR · Began Oct 1, 2022 · 3 years ago · Source ↗
TTHM — MR violation
medium severityResolvedTTHM MR violation (Resolved).
EPA SDWIS · MR · Began Oct 1, 2022 · 3 years ago · Source ↗
Water-related lawsuits
No lawsuits on record.
In the news & sources
No coverage linked yet.