Water exposure can happen when someone drinks polluted subsoil and surface water, or ingests it unintentionally while swimming or taking a shower.
After exposure, some substances quickly leave the body. Others might persist for a long period in fats, blood, or bones. For instance, if a person has been exposed to arsenic just once, it typically only persists inside the body for 3 days. Other substances, like the insecticide DDT, can linger inside the body for up to 50 years.
Exposed: A chemical can only harm your health if it comes into touch with or enters your body. Exposure routes: A chemical can be exposed through eating, inhalation, or direct contact.
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