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Water Quality Report

Eldorado, IL

Saline County · 8,636 residents · 2 water systems

4

Contaminants detected

0

PFAS compounds

341

Hardness (mg/L)

1

Above legal limits

2

Above health guidelines

Eldorado drinking water comes from groundwater wells. Based on the most recent monitoring data, 4 contaminants have been detected in the water supply, including Lead, Copper, Total Trihalomethanes, Haloacetic Acids (HAA5). PFAS testing has been conducted with no detections. Water hardness is 341 mg/L (very hard), which can cause scale buildup in appliances and reduce soap effectiveness.

Contaminants detected in Eldorado water

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

Lead0.0014 / 0.015 mg/L
9% of EPA limit
Copper35 / 1300 ug/L
3% of EPA limit
Total Trihalomethanes24.2 / 80 ug/L
30% of EPA limit
21% of EPA limit
PFAS (tested — none detected)
Microplastics (not routinely tested)

Other cities in Saline County

Water quality reports for nearby Illinois communities.

Frequently asked questions

Is Eldorado, IL tap water safe to drink?
Eldorado tap water has 1 contaminant currently measured above EPA legal standards (Maximum Contaminant Levels), and 2 above independent health guidelines. 4 contaminants have been detected in the water supply, including Lead, Copper, 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 Eldorado water?
Monitoring has detected 4 contaminants in Eldorado's water supply: Lead, Copper, Total Trihalomethanes, Haloacetic Acids (HAA5). 1 of these are above EPA legal limits. 2 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Eldorado water have PFAS?
Eldorado'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.
Is Eldorado water hard?
Yes. Eldorado water has a hardness of 341 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 Eldorado get its drinking water?
Eldorado'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. Eldorado is served by 2 water systems, the largest being ELDORADO (serving 4,715 people).

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