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Factsheets - Former Meridian Road Landfill, Fortville, Indiana
Arsenic - Agency for Toxic Substances and Disease Registry
- What is arsenic?
- What happens to arsenic when it enters the environment?
- How might I be exposed to arsenic?
- How can arsenic affect my health?
- How likely is arsenic to cause cancer?
- Is there a medical test to show whether I've been exposed to arsenic?
- Has the federal government made recommendations to protect human health?
- Where can I get more information?
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For more information
Click here for this factsheet in PDF format
What is arsenic?
Arsenic is found in nature at low levels. It's mostly in compounds with oxygen, chlorine, and sulfur. These are called inorganic arsenic compounds. Arsenic in plants and animals combines with carbon and hydrogen. This is called organic arsenic. Organic arsenic is usually less harmful than inorganic arsenic.
Most arsenic compounds have no smell or special taste. Inorganic arsenic compounds are mainly used to preserve wood. They are also used to make insecticides and weed killers. You can check the labels of treated wood and insecticides to see if they contain arsenic. Copper and lead ores contain small amounts of arsenic.
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What happens to arsenic when it enters the environment?
- It doesn't evaporate.
- Most arsenic compounds can dissolve in water.
- It gets into air when contaminated materials are burned.
- It settles from the air to the ground.
- It doesn't break down, but can change from one form to another.
- Fish and shellfish build up organic arsenic in their tissues, but
most of the arsenic in fish isn't toxic.
How might I be exposed to arsenic?
- Breathing sawdust or burning smoke from wood containing arsenic.
- Breathing workplace air.
- Ingesting contaminated water, soil, or air at waste sites.
- Ingesting contaminated water, soil, or air near areas naturally high in arsenic.
How can arsenic affect my health?
Inorganic arsenic is a human poison. Organic arsenic is less harmful. High levels of inorganic arsenic in food or water can be fatal. A high level is 60 parts of arsenic per million parts of food or water (60 ppm). Arsenic damages many tissues including nerves, stomach and intestines, and skin. Breathing high levels can give you a sore throat and irritated lungs. Lower levels of exposure to inorganic arsenic may cause:
- Nausea, vomiting, and diarrhea
- Decreased production of red and white blood cells
- Abnormal heart rhythm
- Blood vessel damage
- A "pins and needles" sensation in hands and feet
Long term exposure to inorganic arsenic may lead to a darkening of the skin and the appearance of small "corns" or "warts" on the palms, soles, and torso. Direct skin contact may cause redness and swelling.
How likely is arsenic to cause cancer?
The Department of Health and Human Services (DHHS) has determined that arsenic is a known carcinogen. Breathing inorganic arsenic increases the risk of lung cancer. Ingesting inorganic arsenic increases the risk of skin cancer and tumors of the bladder, kidney, liver, and lung.
Is there a medical test to show whether I've been exposed to arsenic?
Tests can measure your exposure to high levels of arsenic. These tests are not routinely performed in a doctor's office. Arsenic can be measured in your urine. This is the most reliable test for arsenic exposure. Since arsenic stays in the body only short time, you must have the test soon after exposure.
Tests on hair or fingernails can measure your exposure to highlevels of arsenic over the past 6-12 months. These tests are not very useful for low level exposures. These tests do not predict whether you will have any harmful health effects.
Has the federal government made recommendations to protect human health?
The Environmental Protection Agency (EPA) sets limits on the amount of arsenic that industrial sources can release. It restricted or canceled many uses of arsenic in pesticides and may restrict more. EPA set a limit of 0.05 parts per million (ppm) for arsenic in drinking water. EPA may lower this further.
The Occupational Safety and Health Administration (OSHA) established a maximum permissible exposure limit for workplace airborne arsenic of 10 micrograms per cubic meter (µg/m³).
Where can I get more information?
ATSDR can tell you where to find occupational and environmental health clinics. Their specialists can recognize, evaluate, and treat illnesses resulting from exposure to hazardous substances. You can also contact your community or state health or environmental quality department if you have any more questions or concerns.
TopFor more information
Agency for Toxic Substances and Disease Registry
Division of Toxicology
1600 Clifton Road NE,
Mailstop E-29 Atlanta, GA 30333
Phone: 1-800-447-1544
FAX: 404-639-6315
U.S. Department of Health and Human Services
Public Health Service
Agency for Toxic Substances and Disease Registry
The Midwest Hazardous Substance Research Center, Michigan
State University.
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