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Water Quality Report

Mount Prospect, IL

Cook County · 41,000 residents · 1 water system

8

Contaminants detected

0

PFAS compounds

—

Hardness (mg/L)

1

Above legal limits

1

Above health guidelines

Mount Prospect drinking water comes from surface water. Based on the most recent monitoring data, 8 contaminants have been detected in the water supply, including Lead, Copper, Radium, Total Trihalomethanes, and 4 others. PFAS testing has been conducted with no detections.

Contaminants detected in Mount Prospect water

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

Lead0.0022 / 0.015 mg/L
15% of EPA limit
Copper31.5 / 1300 ug/L
2% of EPA limit
Radium12.6 / 5 pCi/L
150% of EPA limit
Total Trihalomethanes61.5 / 80 ug/L
77% of EPA limit
34% of EPA limit
Xylenes6.8 / 10000 ug/L
0% of EPA limit
Ethylbenzene0.91 / 700 ug/L
0% of EPA limit
Toluene9.9 / 1000 ug/L
1% of EPA limit
PFAS (tested — none detected)
Microplastics (not routinely tested)

Other cities in Cook County

Water quality reports for nearby Illinois communities.

Frequently asked questions

Is Mount Prospect, IL tap water safe to drink?
Mount Prospect tap water has 1 contaminant currently measured above EPA legal standards (Maximum Contaminant Levels), and 1 above independent health guidelines. 8 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, how they compare to both legal limits and health guidelines, and what actions to take.
What contaminants are in Mount Prospect water?
Monitoring has detected 8 contaminants in Mount Prospect's water supply: Lead, Copper, Radium, Total Trihalomethanes, Haloacetic Acids (HAA5), Xylenes, Ethylbenzene, Toluene. 1 of these are above EPA legal limits. 1 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Mount Prospect water have PFAS?
Mount Prospect's water has been tested for PFAS compounds with no detections. Testing was conducted as part of the EPA's Unregulated Contaminant Monitoring Rule (UCMR5) program.
Where does Mount Prospect get its drinking water?
Mount Prospect's drinking water comes from surface water sources. The water is treated and tested according to Illinois EPA and EPA requirements before distribution. Mount Prospect is served by one water system: MOUNT PROSPECT.

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