Radon is a silent but deadly killer and since January is National Radon Awareness Month, the health department is urging residents to have their homes tested.
Experts say radon is the second leading cause of lung cancer in the United States, coming in behind smoking.
And health officials warn that just because you can't see radon or smell it, doesn't mean it isn't there.
According to the Nebraska Department of Health, the radioactive gas causes over 21,000 lung cancer deaths in the U.S. each year.
Experts say each home is different and just because a neighbor's home may read low, doesn't mean yours will as well.
"One house may test high and you may test low. Just because your neighbors around you don't have it does not mean that you don't have it. The only way to know is if you test your home," said Heather Easton with Two Rivers Public Health District in Holdrege.
Nebraska has among the highest levels of radon in the country due to an underlying slab of uranium, which when broken down creates the gas known as radon.
Test kits can be bought for five dollars through the Two Rivers Health Department and also can be found at many hardware stores for little cost as well.