Superior, WI
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
Superior Water Light & Power Company
- PWSID:
- WI8160147
- Source:
- Surface water
- Serves:
- 26,084 people
Manitou Falls Sanitary District No 1
- PWSID:
- WI8160145
- Source:
- Ground water
- Serves:
- 95 people
EPA & DEP violations
City-wide
20 violationsGroundwater Rule — Other violation
medium severityUnaddressedGroundwater Rule Other violation (Unaddressed).
EPA SDWIS · Other · Began Mar 21, 2026 · 4 months ago · Source ↗
E. COLI — MR violation
medium severityUnaddressedE. COLI MR violation (Unaddressed).
EPA SDWIS · MR · Began Jan 14, 2026 · 6 months ago · Source ↗
E. COLI — MR violation
medium severityUnaddressedE. COLI MR violation (Unaddressed).
EPA SDWIS · MR · Began Dec 24, 2025 · 7 months ago · Source ↗
E. COLI — MR violation
medium severityUnaddressedE. COLI MR violation (Unaddressed).
EPA SDWIS · MR · Began Dec 10, 2025 · 8 months ago · Source ↗
E. COLI — MR violation
medium severityUnaddressedE. COLI MR violation (Unaddressed).
EPA SDWIS · MR · Began Oct 15, 2025 · 9 months ago · Source ↗
Consumer Confidence Rule — Other violation
medium severityUnaddressedConsumer Confidence Rule Other violation (Unaddressed).
EPA SDWIS · Other · Began Jul 1, 2025 · 1 year ago · Source ↗
Lead and Copper Rule — MR violation
medium severityUnaddressedLead and Copper Rule MR violation (Unaddressed).
EPA SDWIS · MR · Began Jul 1, 2025 · 1 year ago · Source ↗
Consumer Confidence Rule — Other violation
medium severityUnaddressedConsumer Confidence Rule Other violation (Unaddressed).
EPA SDWIS · Other · Began Jul 1, 2025 · 1 year ago · Source ↗
Lead and Copper Rule — TT violation
high severityHealth-basedUnaddressedLead and Copper Rule TT violation (Unaddressed).
EPA SDWIS · TT · Began Mar 26, 2025 · 1 year ago · Source ↗
Public Notice — Other violation
medium severityUnaddressedPublic Notice Other violation (Unaddressed).
EPA SDWIS · Other · Began Mar 26, 2025 · 1 year ago · Source ↗
Public Notice — Other violation
medium severityUnaddressedPublic Notice Other violation (Unaddressed).
EPA SDWIS · Other · Began Mar 1, 2025 · 1 year ago · Source ↗
Public Notice — Other violation
medium severityUnaddressedPublic Notice Other violation (Unaddressed).
EPA SDWIS · Other · Began Feb 10, 2025 · 1 year ago · Source ↗
Revised Total Coliform Rule — RPT violation
medium severityResolvedRevised Total Coliform Rule RPT violation (Resolved).
EPA SDWIS · RPT · Began Feb 10, 2025 · 1 year ago · Source ↗
Public Notice — Other violation
medium severityUnaddressedPublic Notice Other violation (Unaddressed).
EPA SDWIS · Other · Began Feb 10, 2025 · 1 year ago · Source ↗
Revised Total Coliform Rule — TT violation
high severityHealth-basedResolvedRevised Total Coliform Rule TT violation (Resolved).
EPA SDWIS · TT · Began Feb 10, 2025 · 1 year ago · Source ↗
Public Notice — Other violation
medium severityUnaddressedPublic Notice Other violation (Unaddressed).
EPA SDWIS · Other · Began Jan 16, 2025 · 1 year ago · Source ↗
E. COLI — MR violation
medium severityUnaddressedE. COLI MR violation (Unaddressed).
EPA SDWIS · MR · Began Jan 16, 2025 · 1 year ago · Source ↗
Nitrate — MR violation
medium severityArchivedNitrate MR violation (Archived).
EPA SDWIS · MR · Began Jan 1, 2025 · 1 year ago · Source ↗
TTHM — MR violation
medium severityArchivedTTHM MR violation (Archived).
EPA SDWIS · MR · Began Jan 1, 2025 · 1 year ago · Source ↗
Public Notice — Other violation
medium severityUnaddressedPublic Notice Other violation (Unaddressed).
EPA SDWIS · Other · Began Jan 1, 2025 · 1 year ago · Source ↗
Water-related lawsuits
No lawsuits on record.
In the news & sources
No coverage linked yet.