Monticello, IA
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
Monticello Water Supply
- PWSID:
- IA5343098
- Source:
- Ground water
- Serves:
- 4,040 people
Montipark Llc
- PWSID:
- IA5300688
- Source:
- Ground water
- Serves:
- 60 people
Bacon Addition
- PWSID:
- IA5343301
- Source:
- Ground water
- Serves:
- 81 people
EPA & DEP violations
City-wide
20 violationsNitrate — MR violation
medium severityArchivedNitrate MR violation (Archived).
EPA SDWIS · MR · Began Mar 1, 2026 · 5 months ago · Source ↗
Public Notice — Other violation
medium severityUnaddressedPublic Notice Other violation (Unaddressed).
EPA SDWIS · Other · Began Feb 28, 2026 · 5 months ago · Source ↗
Public Notice — Other violation
medium severityUnaddressedPublic Notice Other violation (Unaddressed).
EPA SDWIS · Other · Began Feb 28, 2026 · 5 months ago · Source ↗
Public Notice — Other violation
medium severityUnaddressedPublic Notice Other violation (Unaddressed).
EPA SDWIS · Other · Began Jan 28, 2026 · 6 months ago · Source ↗
Public Notice — Other violation
medium severityUnaddressedPublic Notice Other violation (Unaddressed).
EPA SDWIS · Other · Began Jan 28, 2026 · 6 months ago · Source ↗
Nitrate — MR violation
medium severityArchivedNitrate MR violation (Archived).
EPA SDWIS · MR · Began Jan 1, 2026 · 7 months ago · Source ↗
Revised Total Coliform Rule — MON violation
medium severityArchivedRevised Total Coliform Rule MON violation (Archived).
EPA SDWIS · MON · Began Jan 1, 2026 · 7 months ago · Source ↗
Public Notice — Other violation
medium severityUnaddressedPublic Notice Other violation (Unaddressed).
EPA SDWIS · Other · Began Dec 26, 2025 · 7 months ago · Source ↗
Public Notice — Other violation
medium severityUnaddressedPublic Notice Other violation (Unaddressed).
EPA SDWIS · Other · Began Dec 26, 2025 · 7 months ago · Source ↗
Revised Total Coliform Rule — MON violation
medium severityArchivedRevised Total Coliform Rule MON violation (Archived).
EPA SDWIS · MON · Began Dec 1, 2025 · 8 months ago · Source ↗
Nitrate — MR violation
medium severityArchivedNitrate MR violation (Archived).
EPA SDWIS · MR · Began Dec 1, 2025 · 8 months ago · Source ↗
Public Notice — Other violation
medium severityUnaddressedPublic Notice Other violation (Unaddressed).
EPA SDWIS · Other · Began Nov 26, 2025 · 8 months ago · Source ↗
Public Notice — Other violation
medium severityUnaddressedPublic Notice Other violation (Unaddressed).
EPA SDWIS · Other · Began Nov 25, 2025 · 8 months ago · Source ↗
Public Notice — Other violation
medium severityUnaddressedPublic Notice Other violation (Unaddressed).
EPA SDWIS · Other · Began Nov 25, 2025 · 8 months ago · Source ↗
Nitrate — MR violation
medium severityArchivedNitrate MR violation (Archived).
EPA SDWIS · MR · Began Nov 1, 2025 · 9 months ago · Source ↗
Revised Total Coliform Rule — MON violation
medium severityArchivedRevised Total Coliform Rule MON violation (Archived).
EPA SDWIS · MON · Began Nov 1, 2025 · 9 months ago · Source ↗
Public Notice — Other violation
medium severityUnaddressedPublic Notice Other violation (Unaddressed).
EPA SDWIS · Other · Began Oct 29, 2025 · 9 months ago · Source ↗
Public Notice — Other violation
medium severityUnaddressedPublic Notice Other violation (Unaddressed).
EPA SDWIS · Other · Began Oct 29, 2025 · 9 months ago · Source ↗
Nitrate — MR violation
medium severityArchivedNitrate MR violation (Archived).
EPA SDWIS · MR · Began Oct 1, 2025 · 10 months ago · Source ↗
Revised Total Coliform Rule — MON violation
medium severityArchivedRevised Total Coliform Rule MON violation (Archived).
EPA SDWIS · MON · Began Oct 1, 2025 · 10 months ago · Source ↗
Water-related lawsuits
No lawsuits on record.
In the news & sources
No coverage linked yet.