Rick Welke, Mgr.
Why is Radon Dangerous to Your Health?
It is the first leading cause
of lung cancer in nonsmokers.
It is the second leading
cause of lung cancer overall
after smoking .
It is a Class A carcinogen.
• Radon is a radioactive gas left behind during
the Glacial periods that comes from the
spontaneous radioactive decay of uranium and
radium that are naturally occurring and
ubiquitously spread throughout the upper soil
layer in Iowa.
• It cannot be detected by human senses
– Colorless, Odorless, and Tasteless
• Inert gas (does not chemically react)
• No Static Electrical Charge
Uranium-238 Radon-222 Bismuth-210
Thorium-234 Polonium-218 Polonium-210
Protactinium-234 Lead-214 Lead-206
Radium-226 Lead-210 Decay Series
Radon Compared to Other Risks
Radon in the US homes causes about 22,000 lung
cancer deaths per year - In Iowa, EPA estimates there
are about 399 deaths annually from exposure to radon
- more than
20000 home fires
Drunk Home Drowning Home Airline
Driving Radon Fires Crashes
U.S. EPA Comparison of
Pesticide Applications 100
Hazardous Waste Sites 1,100
Toxic Outdoor Pollutants 2,000
Pesticide Residues on Food 6,000
Sources of Radiation Exposure to
the U.S. Population
55% indoor radon
concentration of 1.3
Radon is by far the
Internal greatest single source
of radiation to the
4% general public.
Terrestrial 3% IA/w 8.5 pCi/L Avg.
~ 75% 42
WHY IS RADON AN
“Iowa has the highest
portion of homes with
elevated indoor radon in the
“5 out of 7 homes test high”
Radon in Iowa Homes
Radon Zone Map
Testing is the only way to know if
you and your family are at risk
Why Does Radon Get Into Your
Radon is sucked
Radon from the soil
indoors is sucked indoors from the soil
What If My House Has?……..
You cannot predict radon levels based on:
Age of Structure
Style of House
Presence of sumps, cracks or other features
You just have to test to find out!
•EPA and IDPH recommend you mitigate or fix a home
when you find radon levels at or over 4 pCi/L.
•Remember -- Radon levels can be reduced!!
Where do You Find A Radon Test Kit ?
Call 800/383-5992: ALA sells ST kits for $10
and LT kits for $25.
Go to your County or City
EH or Public Health Office
(many sell ST kits for $5-10).
Go to your local retail store
(many sell ST kits for $15-20).
Do not buy from Menards/or retail selling Prolab
Google: Iowa Radon Program.
Click on I feel lucky, and find the list of licensed
radon measurement specialists ($100-150; test results
in 48 hours)
Homes With High Radon
Can Be Remediated
Active soil depressurization is a means of
creating a vacuum beneath a slab or plastic
sheet and collecting the radon before it enters a