Sand Coulee, MT
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
Big Stone Colony Inc
- PWSID:
- MT0003077
- Source:
- Ground water
- Serves:
- 130 people
Tracy Water Users Corp
- PWSID:
- MT0000345
- Source:
- Ground water
- Serves:
- 200 people
Sand Coulee Water Users District
- PWSID:
- MT0000325
- Source:
- Ground water
- Serves:
- 180 people
Grassland Colony
- PWSID:
- MT0004832
- Source:
- Ground water
- Serves:
- 80 people
EPA & DEP violations
Lead and Copper Rule — MR violation
medium severityUnaddressedLead and Copper Rule MR violation (Unaddressed).
EPA SDWIS · MR · Began Dec 30, 2024 · 1 year ago · Source ↗
Consumer Confidence Rule — Other violation
medium severityUnaddressedConsumer Confidence Rule Other violation (Unaddressed).
EPA SDWIS · Other · Began Oct 1, 2024 · 1 year ago · Source ↗
Consumer Confidence Rule — Other violation
medium severityUnaddressedConsumer Confidence Rule Other violation (Unaddressed).
EPA SDWIS · Other · Began Jul 1, 2024 · 1 year ago · Source ↗
E. COLI — MR violation
medium severityResolvedE. COLI MR violation (Resolved).
EPA SDWIS · MR · Began May 21, 2024 · 2 years ago · Source ↗
Groundwater Rule — TT violation
high severityHealth-basedResolvedGroundwater Rule TT violation (Resolved).
EPA SDWIS · TT · Began Jul 1, 2023 · 2 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 ↗
Consumer Confidence Rule — Other violation
medium severityResolvedConsumer Confidence Rule Other violation (Resolved).
EPA SDWIS · Other · Began Jul 1, 2020 · 5 years ago · Source ↗
E. COLI — MR violation
medium severityResolvedE. COLI MR violation (Resolved).
EPA SDWIS · MR · Began Oct 17, 2019 · 6 years ago · Source ↗
Consumer Confidence Rule — Other violation
medium severityResolvedConsumer Confidence Rule Other violation (Resolved).
EPA SDWIS · Other · Began Jul 1, 2019 · 6 years ago · Source ↗
E. COLI — MR violation
medium severityResolvedE. COLI MR violation (Resolved).
EPA SDWIS · MR · Began Nov 14, 2018 · 7 years ago · Source ↗
Lead and Copper Rule — MR violation
medium severityResolvedLead and Copper Rule MR violation (Resolved).
EPA SDWIS · MR · Began Apr 1, 2018 · 8 years ago · Source ↗
Gross Alpha, Excl. Radon and U — MR violation
medium severityResolvedGross Alpha, Excl. Radon and U MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2018 · 8 years ago · Source ↗
Combined Radium (-226 and -228) — MR violation
medium severityResolvedCombined Radium (-226 and -228) MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2018 · 8 years ago · Source ↗
Endrin — MR violation
medium severityResolvedEndrin MR violation (Resolved).
EPA SDWIS · MR · Began Jul 1, 2017 · 8 years ago · Source ↗
Di(2-ethylhexyl) adipate — MR violation
medium severityResolvedDi(2-ethylhexyl) adipate MR violation (Resolved).
EPA SDWIS · MR · Began Jul 1, 2017 · 8 years ago · Source ↗
OXAMYL — MR violation
medium severityResolvedOXAMYL MR violation (Resolved).
EPA SDWIS · MR · Began Jul 1, 2017 · 8 years ago · Source ↗
Di(2-ethylhexyl) phthalate — MR violation
medium severityResolvedDi(2-ethylhexyl) phthalate MR violation (Resolved).
EPA SDWIS · MR · Began Jul 1, 2017 · 8 years ago · Source ↗
Carbofuran — MR violation
medium severityResolvedCarbofuran MR violation (Resolved).
EPA SDWIS · MR · Began Jul 1, 2017 · 8 years ago · Source ↗
Atrazine — MR violation
medium severityResolvedAtrazine MR violation (Resolved).
EPA SDWIS · MR · Began Jul 1, 2017 · 8 years ago · Source ↗
LASSO — MR violation
medium severityResolvedLASSO MR violation (Resolved).
EPA SDWIS · MR · Began Jul 1, 2017 · 8 years ago · Source ↗
Water-related lawsuits
No lawsuits on record.
In the news & sources
No coverage linked yet.