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Water Quality Report

Sandwich, IL

DeKalb County · 7,156 residents · 1 water system

6

Contaminants detected

0

PFAS compounds

—

Hardness (mg/L)

1

Above legal limits

1

Above health guidelines

Sandwich drinking water comes from groundwater wells. Based on the most recent monitoring data, 6 contaminants have been detected in the water supply, including Lead, Copper, Radium, Total Trihalomethanes, and 2 others. PFAS testing has been conducted with no detections.

Contaminants detected in Sandwich 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
Copper250 / 1300 ug/L
19% of EPA limit
Radium9.3 / 5 pCi/L
150% of EPA limit
18% of EPA limit
7% of EPA limit
cis-1,2-Dichloroethylene1.3 / 70 ug/L
2% of EPA limit
PFAS (tested — none detected)
Microplastics (not routinely tested)

Other cities in DeKalb County

Water quality reports for nearby Illinois communities.

Frequently asked questions

Is Sandwich, IL tap water safe to drink?
Sandwich tap water has 1 contaminant currently measured above EPA legal standards (Maximum Contaminant Levels), and 1 above independent health guidelines. 6 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 Sandwich water?
Monitoring has detected 6 contaminants in Sandwich's water supply: Lead, Copper, Radium, Total Trihalomethanes, Haloacetic Acids (HAA5), cis-1,2-Dichloroethylene. 1 of these are above EPA legal limits. 1 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Sandwich water have PFAS?
Sandwich'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 Sandwich get its drinking water?
Sandwich'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. Sandwich is served by one water system: SANDWICH.

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