Fillmore County · 1,462 residents · 2 water systems
6
Contaminants detected
0
PFAS compounds
600
Hardness (mg/L)
0
Above legal limits
1
Above health guidelines
Preston drinking water comes from groundwater wells. Based on the most recent monitoring data, 6 contaminants have been detected in the water supply, including Lead, Nitrate, Radium, Total Trihalomethanes, and 2 others. Water hardness is 600 mg/L (very hard), which can cause scale buildup in appliances and reduce soap effectiveness.
Contaminants detected in Preston water
6 total
Detection does not necessarily mean unsafe levels. See individual reports for concentrations and EPA limits.
Preston 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. 6 contaminants have been detected in the water supply, including Lead, Nitrate, Radium, Total Trihalomethanes, Haloacetic Acids (HAA5). 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 Preston water?
Monitoring has detected 6 contaminants in Preston's water supply: Lead, Nitrate, Radium, Total Trihalomethanes, Haloacetic Acids (HAA5), Fluoride. 1 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Is Preston water hard?
Yes. Preston water has a hardness of 600 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 Preston get its drinking water?
Preston's drinking water comes from groundwater wells that draw from underground aquifers. The water is treated and tested according to Minnesota Department of Health and EPA requirements before distribution. Preston is served by 2 water systems, the largest being Preston (serving 1,322 people).
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