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Water Quality Report

Long Grove, IL

Lake County · 791 residents · 5 water systems

8

Contaminants detected

0

PFAS compounds

359

Hardness (mg/L)

0

Above legal limits

6

Above health guidelines

Long Grove drinking water comes from groundwater wells. Based on the most recent monitoring data, 8 contaminants have been detected in the water supply, including Lead, Radium, Total Trihalomethanes, Haloacetic Acids (HAA5), and 4 others. Water hardness is 359 mg/L (very hard), which can cause scale buildup in appliances and reduce soap effectiveness.

Contaminants detected in Long Grove water

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

Lead0.0012 / 0.015 mg/L
8% of EPA limit
Radium1.1 / 5 pCi/L
23% of EPA limit
15% of EPA limit
9% of EPA limit
Barium0.0198 / 2 mg/L
1% of EPA limit
Fluoride1.2 / 4 mg/L
29% of EPA limit
PFBA (Perfluorobutanoic Acid)1.1 ng/L
UnregulatedPFAS
PFPeA (Perfluoropentanoic Acid)1.6 ng/L
UnregulatedPFAS
Microplastics (not routinely tested)

Other cities in Lake County

Water quality reports for nearby Illinois communities.

Frequently asked questions

Is Long Grove, IL tap water safe to drink?
Long Grove tap water meets EPA legal standards (Maximum Contaminant Levels). However, 6 contaminants are present above independent health guidelines, which are often stricter than legal limits. 8 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 Long Grove water?
Monitoring has detected 8 contaminants in Long Grove's water supply: Lead, Radium, Total Trihalomethanes, Haloacetic Acids (HAA5), Barium, Fluoride, PFBA (Perfluorobutanoic Acid), PFPeA (Perfluoropentanoic Acid). 6 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Is Long Grove water hard?
Yes. Long Grove water has a hardness of 359 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 Long Grove get its drinking water?
Long Grove'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. Long Grove is served by 5 water systems, the largest being FIELDS OF LONG GROVE (serving 267 people).

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