Crystal Lake, IL
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
Crystal Lake
- PWSID:
- IL1110150
- Source:
- Ground water
- Serves:
- 40,661 people
EPA & DEP violations
Crystal Lake
PWSID IL111015013 violationsBHC-GAMMA — MR violation
medium severityArchivedBHC-GAMMA MR violation (Archived).
EPA SDWIS · MR · Began Jan 1, 2026 · 7 months ago · Source ↗
Methoxychlor — MR violation
medium severityArchivedMethoxychlor MR violation (Archived).
EPA SDWIS · MR · Began Jan 1, 2026 · 7 months ago · Source ↗
Heptachlor — MR violation
medium severityArchivedHeptachlor MR violation (Archived).
EPA SDWIS · MR · Began Jan 1, 2026 · 7 months ago · Source ↗
Hexachlorocyclopentadiene — MR violation
medium severityArchivedHexachlorocyclopentadiene MR violation (Archived).
EPA SDWIS · MR · Began Jan 1, 2026 · 7 months ago · Source ↗
Di(2-ethylhexyl) phthalate — MR violation
medium severityArchivedDi(2-ethylhexyl) phthalate MR violation (Archived).
EPA SDWIS · MR · Began Jan 1, 2026 · 7 months ago · Source ↗
Atrazine — MR violation
medium severityArchivedAtrazine MR violation (Archived).
EPA SDWIS · MR · Began Jan 1, 2026 · 7 months ago · Source ↗
Di(2-ethylhexyl) adipate — MR violation
medium severityArchivedDi(2-ethylhexyl) adipate MR violation (Archived).
EPA SDWIS · MR · Began Jan 1, 2026 · 7 months ago · Source ↗
Endrin — MR violation
medium severityArchivedEndrin MR violation (Archived).
EPA SDWIS · MR · Began Jan 1, 2026 · 7 months ago · Source ↗
LASSO — MR violation
medium severityArchivedLASSO MR violation (Archived).
EPA SDWIS · MR · Began Jan 1, 2026 · 7 months ago · Source ↗
Heptachlor epoxide — MR violation
medium severityArchivedHeptachlor epoxide MR violation (Archived).
EPA SDWIS · MR · Began Jan 1, 2026 · 7 months ago · Source ↗
HEXACHLOROBENZENE — MR violation
medium severityArchivedHEXACHLOROBENZENE MR violation (Archived).
EPA SDWIS · MR · Began Jan 1, 2026 · 7 months ago · Source ↗
Simazine — MR violation
medium severityArchivedSimazine MR violation (Archived).
EPA SDWIS · MR · Began Jan 1, 2026 · 7 months 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.