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Agriculture, environment and natural resources
Drinking water
Contaminants in drinking water wells
Main contaminants in drinking water from a well
Main contaminants in drinking water from a well
Escherichia coli (E. coli), fecal coliforms or
enterococci
Escherichia coli (E. coli), fecal coliforms or enterococci in well water
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Uranium
Uranium is a radioactive element that can contaminate your well water.
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Barium
Barium is a chemical element that occurs naturally in the soil, often in low concentrations. It can dissolve in groundwater and contaminate it.
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Arsenic
Arsenic is a chemical element that occurs naturally in the soil. It can dissolve in groundwater and contaminate it.
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Nitrates and
nitrites
In Quebec, the standard for the concentration not to be exceeded for nitrates/nitrites in drinking water is 10 mg/L.
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Iron
Iron is a naturally occurring chemical element in water.
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Fluoride
Fluorides are mineral salts that occur naturally in water.
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Manganese
Manganese is naturally present in drinking water.
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Last update: March 28, 2023
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