NRSB - National Radon Safety Board

02/23/2026

The NRSB Certification Office is closed today, Monday, February 23, due to the inclement weather. We expect to be open and fully functional tomorrow, Tuesday, February 24th.

12/23/2024

The NRSB wishes you a wonderful holiday celebration with family and friends!

We will be closed as of 3:00 pm on Tuesday, December 24th, December 25th, and January 1st. We will be back in the office on Thursday, January 2, to help you start the New Year!

10/30/2024

Radon is the invisible, silent, scent free killer.

Radon enters a home from the decay of uranium in the soil beneath a house through cracks in the foundation, basements, floor drains, sump pumps, and floor joints. It becomes trapped within the home where it enters the air we breathe. Know these top 5 reasons to test for radon in your home.

07/31/2024

The NRSB has developed a new guide to help you hire a radon professional! Check it out at:

07/09/2024

Thinking of going into business for yourself? Already a home inspector and looking to expand your business? Becoming a radon professional requires minimal investment to be in charge of our own hours, customers and work schedule. You are also helping families - ensuring that they are living and working in a safe environment. Find out more on our website www.nrsb.org

05/29/2024

Kansas State University (KSU) Engineering Extension conducted an abridged evaluation of eight consumer-grade digital radon monitors, using the KSU secondary radon chamber. You can read the article via the link below, including the results:

05/22/2024

See the Radon explanation from "This Old House"

In this video, This Old House Host Kevin O’Connor talks about radon testing, safe levels, and mitigation with home technology expert Ross Trethewey.SUBSCRIBE...

05/16/2024

Do you know where radon is found in the United States? Do you know if it is found in your state? The links below take you first to an EPA overview of radon in the United States and the second provides an overview by state.
Check your state out today - when was your home last tested for Radon?

www.epa.gov/system/files/documents/2024-05/radon-zones-map_text_link.pdf

https://www.epa.gov/radon/epa-maps-radon-zones-and-supporting-documents-state

05/15/2024

Do you know what radon is?

Radon is an invisible radioactive gas that comes from the ground and is in every home in Canada. It’s the #1 cause of lung cancer in non-smokers. You can't s...

05/09/2024

The education of and communication with consumers about the dangers of radon is an important part of our core tenants. In this article, written by Karuna Eberl for Family Handyman magazine, Nancy Bredhoff, President of Radon Testing Corporation of America, Inc. (RTCA) and President and volunteer on the board of the National Radon Safety Board (NRSB), is quoted.

Radon can show up in any home, and elevated levels can cause lung cancer. Here's how to test for, monitor and mitigate radon in your home.