Water Quality Report
Mark, IL
Putnam County · 555 residents · 1 water system
7
Contaminants detected
0
PFAS compounds
—
Hardness (mg/L)
0
Above legal limits
1
Above health guidelines
Mark drinking water comes from groundwater wells. Based on the most recent monitoring data, 7 contaminants have been detected in the water supply, including Lead, Nitrate, Copper, Radium, and 3 others.
Contaminants detected in Mark water
Detection does not necessarily mean unsafe levels. See individual reports for concentrations and EPA limits.
Lead0 / 0.015 mg/L
0% of EPA limit
Nitrate0.495 / 10 mg/L
5% of EPA limit
Copper574 / 1300 ug/L
44% of EPA limit
Radium1.1 / 5 pCi/L
22% of EPA limit
Total Trihalomethanes22.5 / 80 ug/L
28% of EPA limit
Haloacetic Acids (HAA5)8.4 / 60 ug/L
14% of EPA limit
Nitrite0.068 / 1 mg/L
7% of EPA limit
Microplastics (not routinely tested)
Water systems serving Mark
Other cities in Putnam County
Water quality reports for nearby Illinois communities.
Frequently asked questions
Is Mark, IL tap water safe to drink?
Mark tap water meets EPA legal standards (Maximum Contaminant Levels). However, 1 contaminant is present above independent health guidelines, which are often stricter than legal limits. 7 contaminants have been detected in the water supply, including Lead, Nitrate, Copper, Radium, Total Trihalomethanes. 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 Mark water?
Monitoring has detected 7 contaminants in Mark's water supply: Lead, Nitrate, Copper, Radium, Total Trihalomethanes, Haloacetic Acids (HAA5), Nitrite. 1 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Where does Mark get its drinking water?
Mark'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. Mark is served by one water system: MARK.
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