Radon Mitigation >> How To Measure Radon Levels

EPA Recommends the Following Testing Steps:Step 1.Take a short-term test. If your result is 4 pCi/L or higher, take a follow-up test (Step 2) to be sure.Step 2. Follow up with either a long-term test or a second short-term test: For a better understanding of your year-round average radon level, How To Measure Radon Levels take a long-term test. 

If you need results quickly, take a second short-term test.The higher your initial short-term test result, How To Measure Radon Levels the more certain you can be that you should take a short-term rather than a long-term follow up test. If your first short-term test result is more than twice EPA's 4 pCi/L action level, you should take a second short-term test immediately.

Step 3. If you followed up with a long-term test: Fix your home if your long-term test result is 4 pCi/L or more. If you followed up with a second short-term test: The higher your short-term results, How To Measure Radon Levels the more certain you can be that you should fix your home.Consider fixing your home if the average of your first and second test is 4 pCi/L or higher. 

What Your Test Results Mean Test your home now and save your results. If you find high radon levels, How To Measure Radon Levels fix your home before you decide to sell it.The average indoor radon level is estimated to be about 1.3 pCi/L, and about 0.4 pCi/L of radon is normally found in the outside air. The U.S. Congress has set a long-term goal that indoor radon levels be no more than outdoor levels. 

While this goal is not yet technologically achievable in all cases, How To Measure Radon Levels most homes today can be reduced to 2 pCi/L or below. Sometimes short-term tests are less definitive about whether or not your home is above 4 pCi/L. This can happen when your results are close to 4 pCi/L. For example, if the average of your two short-term test results is 4.1 pCi/L, there is about a 50% chance that your year-round average is somewhat below 4 pCi/L. 

However, EPA believes that any radon exposure carries some risk - no level of radon is safe. Even radon levels below 4 pCi/L pose some risk, How To Measure Radon Levels and you can reduce your risk of lung cancer by lowering your radon level.Radon and Home Sales More and more, home buyers and renters are asking about radon levels before they buy or rent a home. 

Because real estate sales happen quickly, there is often little time to deal with radon and other issues. The best thing to do is to test for radon NOW and save the results in case the buyer is interested in them. Fix a problem if it exists so it won't complicate your home sale. If you are planning to move, How To Measure Radon Levels read EPA's pamphlet "Home Buyer's and Seller's Guide to Radon," which addresses some common questions (see also Radon in Real Estate). 

You can also use the results of two short-term tests done side-by-side (four inches apart) to decide whether to fix your home.During home sales: Buyers often ask if a home has been tested, How To Measure Radon Levels and if elevated levels were reduced. Buyers frequently want tests made by someone who is not involved in the home sale. 

Your state radon office can assist you in identifying a qualified tester. Buyers might want to know the radon levels in areas of the home (like a basement they plan to finish) that the seller might not otherwise test. Today many How To Measure Radon Levels homes are built to prevent radon from coming in. Building codes in your state or local area may require these radon-resistant construction features. 

If you are buying or renting a new home, ask the owner or builder if it has radon-resistant features. The EPA recommends building new homes with radon-resistant features in high radon potential (Zone 1) areas. Even if built radon-resistant, How To Measure Radon Levels every new home should be tested for radon after occupancy. If you have a test result of 4 pCi/L or more, consult a qualified mitigator to estimate the cost of upgrading to an active system by adding a vent fan to reduce the radon level. 

In an existing home, How To Measure Radon Levels the cost to install a radon mitigation system is about the same as for other common home repairs. For more information, refer to EPA's Map of Radon Zones and other useful EPA documents on radon-resistant new construction (see publications). See also EPA's Indoor air PLUS new homes certification program.

Radon in Water There are two main sources for the radon in your home's indoor air, How To Measure Radon Levels 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 How To Measure Radon Levels 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.If you've tested the air in your home and found a radon problem, and your water comes from a well, How To Measure Radon Levels have your water tested.

If you've tested your private well and have a radon in water problem, it can be fixed. Your home's water supply can be treated in two ways. Point-of-entry treatment can effectively remove radon from the water before it enters your home. Point-of-use treatment devices remove radon from your water at the tap, but only treat a small portion of the water you use and How To Measure Radon Levels are not effective in reducing the risk from breathing radon released into the air from all water used in the home.

For more information, call EPA's Drinking Water Hotline at (800) 426-4791 or visitwww.epa.gov/safewater/radon.htmlIf your water comes from a private well, you can also contact your state radon office. How to Lower the Radon Levels in Your House and Home Renovations If you are planning any major structural renovation, How To Measure Radon Levels such as converting an unfinished basement area into living space, it is especially important to test the area for radon before you begin the renovation. 

If your test results indicate a radon problem, How To Measure Radon Levels radon-resistant techniques can be inexpensively included as part of the renovation. Because major renovations can change the level of radon in any home, always test again after work is completed.Since there is no known safe level of radon, there can always be some risk. 

But the risk can be reduced by lowering the radon level in your home.There are several proven methods to reduce radon in your home, but the one primarily used is a vent pipe system and fan, which pulls radon from beneath the house and vents it to the outside. This system, known as a soil suction radon reduction system, How To Measure Radon Levels does not require major changes to your home. 

Sealing foundation cracks and other openings makes this kind of system more effective How To Measure Radon Levels and cost-efficient. Similar systems can also be installed in houses with crawl spaces. Radon contractors can use other methods that may also work in your home. 

The right system depends on the design of your home How To Measure Radon Levels and other factors.Ways to reduce radon in your home are discussed in EPA's "Consumer's Guide to Radon Reduction." You can also download a copy from our radon publications page.

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