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Water Quality Report

Cairo, IL

Alexander County · 1,821 residents · 1 water system

7

Contaminants detected

0

PFAS compounds

—

Hardness (mg/L)

0

Above legal limits

2

Above health guidelines

Cairo drinking water comes from groundwater wells. Based on the most recent monitoring data, 7 contaminants have been detected in the water supply, including Lead, Copper, Radium, Total Trihalomethanes, and 3 others.

Contaminants detected in Cairo water

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

Lead0.002 / 0.015 mg/L
13% of EPA limit
Copper260 / 1300 ug/L
20% of EPA limit
Radium3.1 / 5 pCi/L
62% of EPA limit
Total Trihalomethanes14.7 / 80 ug/L
18% of EPA limit
4% of EPA limit
Barium0.2 / 2 mg/L
10% of EPA limit
Fluoride1.4 / 4 mg/L
35% of EPA limit
Microplastics (not routinely tested)

Other cities in Alexander County

Water quality reports for nearby Illinois communities.

Frequently asked questions

Is Cairo, IL tap water safe to drink?
Cairo tap water meets EPA legal standards (Maximum Contaminant Levels). However, 2 contaminants are present above independent health guidelines, which are often stricter than legal limits. 7 contaminants have been detected in the water supply, including Lead, Copper, Radium, Total Trihalomethanes, Haloacetic Acids (HAA5). 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 Cairo water?
Monitoring has detected 7 contaminants in Cairo's water supply: Lead, Copper, Radium, Total Trihalomethanes, Haloacetic Acids (HAA5), Barium, Fluoride. 2 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Where does Cairo get its drinking water?
Cairo'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. Cairo is served by one water system: IL AMERICAN-CAIRO.

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