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Radon
is a cancer-causing, radioactive gas. You
can't see it, smell it, or taste it. It comes
from the natural decay of uranium that is found in nearly
all soils.
Living with Radon:
Nearly 1 out of every 15 homes in the U.S. is estimated
to have elevated radon levels. Elevated levels of radon
gas have been found in homes in your state. Contact your
EPA state radon office for general information or
view a map of your area http://www.epa.gov/radon/zonemap.html.
While radon problems may be more common in some areas,
any home may have a problem. The only way to know about
your home is to test.
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SURGEON
GENERAL HEALTH ADVISORY:
" Indoor
radon is the second-leading cause of
lung cancer in the United States and
breathing it over prolonged periods
can present a significant health risk
to families all over the country. It's
important to know that this threat
is completely preventable. Radon
can be detected with a simple test
and fixed through well-established
venting techniques." January
2005 |
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Health Effects of Living with Radon:
The U. S. Surgeon General, Richard Carmona, has
issued a Health Advisory warning Americans about the
health risk
from exposure to radon in indoor air. The Nation’s
Chief Physician urged Americans to test their homes
to find out how much radon they might be breathing. Dr.
Carmona also stressed the need to remedy the problem
as soon as possible when the radon level is 4 pCi/L
or more. Dr.
Carmona noted that more than 20,000 Americans die of
radon-related lung cancer each year.
Radon gas decays into radioactive
particles that can get trapped in your lungs when you
breathe. As they break down further, these particles
release small bursts of energy. This can damage lung
tissue and lead to lung cancer over the course of your
lifetime. Not everyone exposed to elevated levels of
radon will develop lung cancer. And the amount of time
between exposure and the onset of the disease may be
many years.
Like other environmental pollutants, there is some
uncertainty about the magnitude of radon health risks.
However, we
know more about radon risks than risks from most other
cancer-causing substances. This is because estimates
of radon risks are based on studies of cancer in humans
(underground
miners).
Smoking combined with radon is an especially
serious health risk. Stop smoking and lower your radon level
to reduce
your lung cancer risk.
Children have been reported
to have greater risk than adults of certain types of
cancer from radiation,
but
there are
currently no conclusive data on whether children
are at greater risk than adults from radon.
Your
chances of getting lung cancer from radon depend mostly
on:
• How much radon is in your home
• The amount of time you spend in your home
• Whether you are a smoker or have ever smoked
U.S. EPA Assessment of Risks from Radon in Homes
In June 2003, the EPA revised its risk assessment for
radon exposure in homes. EPA
estimates that about 21,000 annual lung cancer deaths are radon related. EPA
also concluded that the effects of radon and cigarette smoking are synergistic,
so that smokers are at higher risk from radon. EPA's revised
estimates are based on the National Academy of Sciences 1999 BEIR
IV (Biological Effects
of Ionizing Radiation) Report which concluded that radon is the second
leading cause of lung cancer after smoking.
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RADON
GETS IN THROUGH:
1 Cracks in solid floors
2 Construction joints
3 Cracks in walls
4 Gaps in suspended floors
5 Gaps around service pipes
6 Cavities inside walls
7 The water supply |
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How Does Radon Get Into Your Home?
It typically moves up through the ground to the air above and into
your home through cracks and other holes in the foundation. Your
home traps
radon inside,
where it can build up. Any home may have a radon problem. This
means new and old homes, well-sealed and drafty homes, and homes
with or
without basements.
Radon from soil gas is the main cause of radon problems. Sometimes
radon enters the home through well water. In a small number
of homes, the building materials can give off radon, too. However,
building materials rarely cause
radon problems
by themselves.
Radon in Water
There are two main sources for the radon in your home's
indoor air, the soil and the water supply. Compared
to radon entering
the home
through
water,
radon entering your home through the soil is usually a much
larger risk.
The radon in your water supply poses
an inhalation risk and an ingestion risk. Research
has shown that your risk of lung cancer from breathing radon
in air is much larger than your risk of stomach cancer from
swallowing water with radon in it. Most
of your risk from radon in water comes from radon released
into the air when water is used for showering and other household
purposes.
Radon in your home's water is not usually a problem
when its source is surface water. A radon in water
problem is more likely when its source is ground water,
e.g. a private well or a public water supply system
that uses ground water. If you are concerned that
radon may be entering your home through the water and
your water comes from a public water supply, contact
your water supplier.
To make inquiries about our radon testing
services or to request a bid, contact
us.
This document may be reproduced without change, in whole
or in part, without permission, except for use as advertising
material or product endorsement. Any such reproduction
should credit the American Lung Association, the U.S.
Consumer Product Safety Commission, and the U.S. Environmental
Protection Agency. The use of all or any part of this
document in a deceptive or inaccurate manner or for purposes
of endorsing a particular product may be subject to appropriate
legal action.
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