Water Quality Report
Waldo, WI
St Croix County · 500 residents · 1 water system
12
Contaminants detected
0
PFAS compounds
—
Hardness (mg/L)
1
Above legal limits
2
Above health guidelines
Waldo drinking water comes from groundwater wells. Based on the most recent monitoring data, 12 contaminants have been detected in the water supply, including Lead, Nitrate, Copper, Radium, and 8 others.
Contaminants detected in Waldo water
Detection does not necessarily mean unsafe levels. See individual reports for concentrations and EPA limits.
Lead0.00035 / 0.015 mg/L
2% of EPA limit
Nitrate0.87 / 10 mg/L
9% of EPA limit
Copper1.8 / 1.3 mg/L
139% of EPA limit
Radium1.7 / 5 pCi/L
34% of EPA limit
Uranium0.06 / 30 ug/L
0% of EPA limit
Total Trihalomethanes8.9 / 80 ug/L
11% of EPA limit
Haloacetic Acids (HAA5)4.7 / 60 ug/L
8% of EPA limit
Nickel0.012 mg/L
UnregulatedInorganic
Xylenes5.1 / 10000 ug/L
0% of EPA limit
Ethylbenzene0.65 / 700 ug/L
0% of EPA limit
Barium0.16 / 2 mg/L
8% of EPA limit
Fluoride0.24 / 4 mg/L
6% of EPA limit
Microplastics (not routinely tested)
Water systems serving Waldo
Other cities in St Croix County
Water quality reports for nearby Wisconsin communities.
Frequently asked questions
Is Waldo, WI tap water safe to drink?
Waldo tap water has 1 contaminant currently measured above EPA legal standards (Maximum Contaminant Levels), and 2 above independent health guidelines. 12 contaminants have been detected in the water supply, including Lead, Nitrate, Copper, Radium, Uranium. 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 Waldo water?
Monitoring has detected 12 contaminants in Waldo's water supply: Lead, Nitrate, Copper, Radium, Uranium, Total Trihalomethanes, Haloacetic Acids (HAA5), Nickel, Xylenes, Ethylbenzene, Barium, Fluoride. 1 of these are above EPA legal limits. 2 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Where does Waldo get its drinking water?
Waldo's drinking water comes from groundwater wells that draw from underground aquifers. The water is treated and tested according to Wisconsin DNR and EPA requirements before distribution. Waldo is served by one water system: WALDO WATERWORKS.
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