Your exposure to sun-based radiation is based largely on where you live. For instance, if you live in Denver, the mile-high city, you are closer to the sun than, say, if you lived in Des Moines, which is not nearly has high.
There are a lot of other things that can cause radiation in the home. The fact is, they are no more harmful than granite countertops. April — In this video, leading scientists explain why consumers should not allow media reports about radon in granite to scare them.
Final analysis: Information available at the present indicates that radon levels associated with granite countertops in homes are low in comparison to background levels. To see the complete study, click here. August — Want to know where radon comes from? Take a look at this graphic. But, as the chart indicates, almost 70 percent of radon results from soil around the house, and just 2. The bottom line: the tiny amount of radon which might emit from a kitchen countertop has virtually no impact on the total contribution to indoor air.
July — If you have any fear of radon in your home, a simple test can be conducted. Testing is inexpensive and easy, requiring just a few minutes of your time. In fact, millions of homeowners do it every year. Environmental Protection Agency. November — Radon Exposures in a Granite Quarry Findings: Based on the review of available data and radon measurements, occupational exposures and health risks related to radon for granite quarry workers are insignificant, i.
December — Predicted Indoor Radon Concentrations from a Monte Carlo Simulation of 1,, Granite Countertop Purchases Findings: Statistical analysis of 1 million countertop purchases shows granite safe for use in homes.
January — Radon Exhalation from Building Materials for Decorative Use Findings: A study by Health Canada of 33 types of commonly purchased granite found no significant levels of radon. November — Assessing Exposure to Radon From Granite Countertops Findings: Researchers assess hundreds of types of granite and find no risk of radon or radiation exposure.
Some granite releases trace amounts of radon, the radioactive gas. Common items such as concrete blocks, televisions, smoke detectors — and even Brazil nuts, bananas and potatoes release measureable levels of radiation.
Elevated radon levels have been found in every state. Radon is in the atmosphere and can also be found in ground water. The national average for radon in outdoor air is Learn more about radon. Any building can have high levels of radon, including new and old homes, well-sealed and drafty homes, office buildings and schools, and homes with or without basements.
Testing is the only way to know if your home has elevated radon levels. Radon gas can get into buildings through:. Additionally, having your school tested for radon is something you may want to discuss with school officials.
Testing is inexpensive and easy — it should only take a few minutes of your time. Millions of Americans have already tested their homes for radon. If elevated levels are found, radon reduction systems work and they are cost effective.
Even very high levels can be reduced to acceptable levels. A level of 0. If the actual equilibrium ratio is determined which is rare , it should be stated. The 50 percent ratio is typical of the home environment, but any indoor environment may have a different and varying relationship between radon and its decay products. Technically speaking, 1 WL represents any combination of short-lived radon decay products in one liter of air that will result in the ultimate emission of 1.
Jump to navigation. National Radon Program Services. Get Answers! What is radon? What is a "picocurie" pCi? What is a "working level" WL? What is the "acceptable" level of radon in air? Testing Results: What do they mean? What is Radon?
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