Radon

The Trumbull Health Department is offering free radon test kits to Trumbull residents, while supplies last, to help homeowners identify potential radon exposure in their homes. Residents may pick up one radon test kit per household on Wednesday, January 28, 2026, from 10:00 a.m. to 12:00 p.m. at the Trumbull Library, 33 Quality Street. A valid driver’s license is required at pickup to verify residency. Trumbull Health Department sanitarians will be on site to answer questions and provide guidance on radon testing. 

The Basics

Radon is an invisible, odorless, tasteless gas that exists naturally in our environment. Radon is a product of the breakdown of radioactive metals in the Earth’s crust. The radioactive gas travels through soil and water, making its way into the atmosphere. Radon is present in the outdoor air at very low levels.

Radon can enter the home through cracks or gaps in floors, service pipes, or even through your well water. The primary health risk associated with chronic exposure to radon is an increased lifetime risk of developing lung cancer. It is recognized by the EPA and WHO as a known human carcinogen.

Read more about radon here: Radon Program 

Why should I test? 

Testing is the only way to determine radon levels inside the home. It’s impossible to estimate radon levels based on topography, the age or condition of the home, etc. Neighboring properties can have wildly different indoor levels of radon.

Indoor radon levels vary seasonally but tend to peak in the winter months, when windows and doors remain closed and there is less air flow.

Testing is easy. View CT DPH’s video on radon testing here: (96) DPH: Testing your home for radon - YouTube

What now? 

The Connecticut Department of Public Health recommends addressing radon at levels above 4 pCi/L, though mitigation is suggested for levels above 2 pCi/L.

Homeowners should retest every 2 years.

A list of radon mitigation professionals in the state is available here: Microsoft Word - Nationally_Certified_Mitigation_Professionals Jan 2026

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