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Arsenic is an odorless and tasteless element that is a poison. It occurs naturally in rocks, soil, water, air, plants and animals. Arsenic can come from natural deposits in the earth or from pollution. It can enter drinking water through the ground or as runoff into surface water sources.

Public water supplies are tested to make sure that water that you drink is safe. Water from private wells can be tested to make sure the water is safe to drink.

Find out more about the water you and your family use in your home for drinking, cooking, cleaning, and laundry at Indoor Water.

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For parents
Protecting children's health is a vital public health goal. Children are particularly vulnerable to the health effects of environmental contaminants. For more information, see Children's Health.
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