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Water Quality Report

Island Lake, IL

Lake County · 8,066 residents · 1 water system

9

Contaminants detected

4

PFAS compounds

570

Hardness (mg/L)

0

Above legal limits

1

Above health guidelines

Island Lake drinking water comes from groundwater wells. Based on the most recent monitoring data, 9 contaminants have been detected in the water supply, including Lead, Radium, Total Trihalomethanes, Haloacetic Acids (HAA5), and 5 others. PFAS compounds have been detected at trace levels in Island Lake water. Water hardness is 570 mg/L (very hard), which can cause scale buildup in appliances and reduce soap effectiveness.

Contaminants detected in Island Lake water

Detection does not necessarily mean unsafe levels. See individual reports for concentrations and EPA limits.

Lead0.0023 / 0.015 mg/L
15% of EPA limit
Radium2 / 5 pCi/L
40% of EPA limit
Total Trihalomethanes15.5 / 80 ug/L
19% of EPA limit
10% of EPA limit
Barium1.8 / 2 mg/L
90% of EPA limit
Fluoride0.646 / 4 mg/L
16% of EPA limit
Methyl Tert Butyl Ether2.2 ug/L
Unregulated
Lithium11 ug/L
Unregulated
PFBA (Perfluorobutanoic Acid)0.9 ng/L
UnregulatedPFAS
PFAS (4 compounds detected)
Microplastics (not routinely tested)

Other cities in Lake County

Water quality reports for nearby Illinois communities.

Frequently asked questions

Is Island Lake, IL tap water safe to drink?
Island Lake tap water meets EPA legal standards (Maximum Contaminant Levels). However, 1 contaminant is present above independent health guidelines, which are often stricter than legal limits. 9 contaminants have been detected in the water supply, including Lead, Radium, Total Trihalomethanes, Haloacetic Acids (HAA5), Barium. View the detailed report for each water system to see specific levels and how they compare to both legal limits and health guidelines.
What contaminants are in Island Lake water?
Monitoring has detected 9 contaminants in Island Lake's water supply: Lead, Radium, Total Trihalomethanes, Haloacetic Acids (HAA5), Barium, Fluoride, Methyl Tert Butyl Ether, Lithium, PFBA (Perfluorobutanoic Acid). Additionally, 4 PFAS compounds have been detected at trace levels. 1 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Island Lake water have PFAS?
Yes. 4 PFAS compounds have been detected in Island Lake's water supply at trace levels. PFAS are sometimes called "forever chemicals" because they do not break down in the environment. The EPA has set Maximum Contaminant Levels for several PFAS compounds. View the detailed report for specific concentrations.
Is Island Lake water hard?
Yes. Island Lake water has a hardness of 570 mg/L (very hard). Hard water is not a health concern but can cause scale buildup in water heaters and appliances, reduce soap effectiveness, and leave mineral deposits. Water softeners or conditioning systems can address hardness.
Where does Island Lake get its drinking water?
Island Lake's drinking water comes from groundwater wells that draw from underground aquifers. The water is treated and tested according to Illinois EPA and EPA requirements before distribution. Island Lake is served by one water system: ISLAND LAKE.

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