Columbia County · 5,902 residents · 5 water systems
10
Contaminants detected
0
PFAS compounds
320
Hardness (mg/L)
1
Above legal limits
5
Above health guidelines
Lodi drinking water comes from groundwater wells. Based on the most recent monitoring data, 10 contaminants have been detected in the water supply, including Lead, Nitrate, Arsenic, Copper, and 6 others. Water hardness is 320 mg/L (very hard), which can cause scale buildup in appliances and reduce soap effectiveness.
Contaminants detected in Lodi water
10 total
Detection does not necessarily mean unsafe levels. See individual reports for concentrations and EPA limits.
Lodi tap water has 1 contaminant currently measured above EPA legal standards (Maximum Contaminant Levels), and 5 above independent health guidelines. 10 contaminants have been detected in the water supply, including Lead, Nitrate, Arsenic, Copper, Total Trihalomethanes. 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 Lodi water?
Monitoring has detected 10 contaminants in Lodi's water supply: Lead, Nitrate, Arsenic, Copper, Total Trihalomethanes, Haloacetic Acids (HAA5), Atrazine, Fluoride, Chromium (total), Barium. 1 of these are above EPA legal limits. 5 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Is Lodi water hard?
Yes. Lodi water has a hardness of 320 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 Lodi get its drinking water?
Lodi'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. Lodi is served by 5 water systems, the largest being LODI WATERWORKS (serving 3,146 people).
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