Ashland, 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
St Labre Indian School
- PWSID:
- MT0000018
- Source:
- Ground water
- Serves:
- 650 people
Ashland Water And Sewer Dist
- PWSID:
- MT0000458
- Source:
- Ground water
- Serves:
- 400 people
EPA & DEP violations
TTHM — MCL violation
high severityHealth-basedArchivedTTHM MCL violation (Archived).
EPA SDWIS · MCL · Began Oct 1, 2025 · 8 months ago · Source ↗
Revised Total Coliform Rule — MON violation
medium severityResolvedRevised Total Coliform Rule MON violation (Resolved).
EPA SDWIS · MON · Began Jun 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 ↗
TTHM — MR violation
medium severityResolvedTTHM MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2025 · 1 year ago · Source ↗
TTHM — MCL violation
high severityHealth-basedArchivedTTHM MCL violation (Archived).
EPA SDWIS · MCL · Began Jul 1, 2024 · 1 year ago · Source ↗
Consumer Confidence Rule — Other violation
medium severityResolvedConsumer Confidence Rule Other violation (Resolved).
EPA SDWIS · Other · Began Jul 1, 2024 · 1 year ago · Source ↗
TTHM — MCL violation
high severityHealth-basedArchivedTTHM MCL violation (Archived).
EPA SDWIS · MCL · Began Apr 1, 2024 · 2 years ago · Source ↗
Nitrate-Nitrite — MR violation
medium severityResolvedNitrate-Nitrite MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2024 · 2 years ago · Source ↗
TTHM — MCL violation
high severityHealth-basedArchivedTTHM MCL violation (Archived).
EPA SDWIS · MCL · Began Jan 1, 2024 · 2 years ago · Source ↗
TTHM — MCL violation
high severityHealth-basedArchivedTTHM MCL violation (Archived).
EPA SDWIS · MCL · Began Oct 1, 2023 · 2 years ago · Source ↗
Consumer Confidence Rule — Other violation
medium severityResolvedConsumer Confidence Rule Other violation (Resolved).
EPA SDWIS · Other · Began Oct 1, 2023 · 2 years ago · Source ↗
Revised Total Coliform Rule — TT violation
high severityHealth-basedResolvedRevised Total Coliform Rule TT violation (Resolved).
EPA SDWIS · TT · Began Aug 10, 2023 · 2 years ago · Source ↗
TTHM — MCL violation
high severityHealth-basedArchivedTTHM MCL violation (Archived).
EPA SDWIS · MCL · Began Jul 1, 2023 · 2 years ago · Source ↗
Fluoride — MR violation
medium severityResolvedFluoride MR violation (Resolved).
EPA SDWIS · MR · Began Jul 1, 2023 · 2 years ago · Source ↗
E. COLI — MR violation
medium severityResolvedE. COLI MR violation (Resolved).
EPA SDWIS · MR · Began May 25, 2023 · 3 years ago · Source ↗
TTHM — MCL violation
high severityHealth-basedArchivedTTHM MCL violation (Archived).
EPA SDWIS · MCL · Began Apr 1, 2023 · 3 years ago · Source ↗
Total Haloacetic Acids (HAA5) — MR violation
medium severityResolvedTotal Haloacetic Acids (HAA5) MR violation (Resolved).
EPA SDWIS · MR · Began Apr 1, 2023 · 3 years ago · Source ↗
TTHM — MR violation
medium severityResolvedTTHM MR violation (Resolved).
EPA SDWIS · MR · Began Apr 1, 2023 · 3 years ago · Source ↗
Fluoride — MR violation
medium severityResolvedFluoride MR violation (Resolved).
EPA SDWIS · MR · Began Apr 1, 2023 · 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 ↗
Water-related lawsuits
No lawsuits on record.
In the news & sources
No coverage linked yet.