Hopkinton, MA
Contamination score
Higher = more contaminated vs. other cities.
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
No issues reported yet. Be the first to report one.

Public water systems
Maillet Woods Condominiums
- PWSID:
- MA2139011
- Source:
- Ground water
- Serves:
- 55 people
Hopkinton Water Department
- PWSID:
- MA2139000
- Source:
- Ground water
- Serves:
- 12,586 people
Deerfield Estates
- PWSID:
- MA2139006
- Source:
- Ground water
- Serves:
- 100 people
Estates At Highland Ridge
- PWSID:
- MA2139010
- Source:
- Ground water
- Serves:
- 100 people
Village At Highland Park
- PWSID:
- MA2139007
- Source:
- Ground water
- Serves:
- 50 people
The Preserve At Hopkinton Condo
- PWSID:
- MA2139008
- Source:
- Ground water
- Serves:
- 80 people
EPA & DEP violations
Revised Total Coliform Rule — MCL violation
high severityHealth-basedResolvedRevised Total Coliform Rule MCL violation (Resolved).
EPA SDWIS · MCL · Began Sep 1, 2022 · 3 years ago · Source ↗
Revised Total Coliform Rule — RPT violation
medium severityResolvedRevised Total Coliform Rule RPT violation (Resolved).
EPA SDWIS · RPT · Began Jul 20, 2018 · 7 years ago · Source ↗
Lead and Copper Rule — MR violation
medium severityResolvedLead and Copper Rule MR violation (Resolved).
EPA SDWIS · MR · Began Jul 1, 2015 · 10 years ago · Source ↗
Coliform (TCR) — MCL violation
high severityHealth-basedResolvedColiform (TCR) MCL violation (Resolved).
EPA SDWIS · MCL · Began Jun 1, 2015 · 11 years ago · Source ↗
Coliform (TCR) — MCL violation
high severityHealth-basedResolvedColiform (TCR) MCL violation (Resolved).
EPA SDWIS · MCL · Began Jun 1, 2014 · 12 years ago · Source ↗
Nitrate — MR violation
medium severityResolvedNitrate MR violation (Resolved).
EPA SDWIS · MR · Began Apr 1, 2014 · 12 years ago · Source ↗
Coliform (TCR) — MCL violation
high severityHealth-basedResolvedColiform (TCR) MCL violation (Resolved).
EPA SDWIS · MCL · Began Sep 1, 2013 · 12 years ago · Source ↗
Coliform (TCR) — MCL violation
high severityHealth-basedResolvedColiform (TCR) MCL violation (Resolved).
EPA SDWIS · MCL · Began Sep 1, 2013 · 12 years ago · Source ↗
Coliform (TCR) — MCL violation
high severityHealth-basedArchivedColiform (TCR) MCL violation (Archived).
EPA SDWIS · MCL · Began Sep 1, 2012 · 13 years ago · Source ↗
Coliform (TCR) — MCL violation
high severityHealth-basedArchivedColiform (TCR) MCL violation (Archived).
EPA SDWIS · MCL · Began Sep 1, 2012 · 13 years ago · Source ↗
Coliform (TCR) — MCL violation
high severityHealth-basedArchivedColiform (TCR) MCL violation (Archived).
EPA SDWIS · MCL · Began Aug 1, 2012 · 13 years ago · Source ↗
Gross Alpha, Excl. Radon and U — MCL violation
high severityHealth-basedResolvedGross Alpha, Excl. Radon and U MCL violation (Resolved).
EPA SDWIS · MCL · Began Jan 1, 2012 · 14 years ago · Source ↗
Gross Alpha, Excl. Radon and U — MCL violation
high severityHealth-basedResolvedGross Alpha, Excl. Radon and U MCL violation (Resolved).
EPA SDWIS · MCL · Began Oct 1, 2011 · 14 years ago · Source ↗
Coliform (TCR) — MCL violation
high severityHealth-basedResolvedColiform (TCR) MCL violation (Resolved).
EPA SDWIS · MCL · Began Sep 1, 2011 · 14 years ago · Source ↗
Gross Alpha, Excl. Radon and U — MCL violation
high severityHealth-basedResolvedGross Alpha, Excl. Radon and U MCL violation (Resolved).
EPA SDWIS · MCL · Began Jul 1, 2011 · 14 years ago · Source ↗
Gross Alpha, Excl. Radon and U — MCL violation
high severityHealth-basedResolvedGross Alpha, Excl. Radon and U MCL violation (Resolved).
EPA SDWIS · MCL · Began Apr 1, 2011 · 15 years ago · Source ↗
Coliform (TCR) — MCL violation
high severityHealth-basedResolvedColiform (TCR) MCL violation (Resolved).
EPA SDWIS · MCL · Began Oct 1, 2010 · 15 years ago · Source ↗
Coliform (TCR) — MCL violation
high severityHealth-basedResolvedColiform (TCR) MCL violation (Resolved).
EPA SDWIS · MCL · Began Oct 1, 2010 · 15 years ago · Source ↗
Coliform (TCR) — MCL violation
high severityHealth-basedResolvedColiform (TCR) MCL violation (Resolved).
EPA SDWIS · MCL · Began Sep 1, 2010 · 15 years ago · Source ↗
Violation — Violation violation
medium severityContaminant Violation violation.
EPA SDWIS · Violation · Began — · Source ↗
Water-related lawsuits
No lawsuits on record.
In the news & sources
No coverage linked yet.