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Connecticut Testing Over Time Reveals Increased Testing and High Levels of Radon

by Margaret Henderson

The Connecticut Department of Health Radon Program radon testing data results have been made available on the Centers for Disease Control and Prevention Environmental Public Health Tracking Network for the years 2000-2016. The data are from buildings tested and not all buildings in the areas and other data gaps may occur. For instance, on the Tracking Network, test results that are not designated as pre- or post-mitigation by the state are included with pre-mitigation data. Even with data limitations, results are enlightening.

In addition to accessing the radon levels from tests reported, the tracking reveals that over time, testing for radon in Connecticut has increased. Number of buildings tested during each year has been increasing over the 16 years. For instance, during 2000, a total number of buildings tested in Fairfield County was 133. In 2008, a total of 407 were tested and in 2016, a total of 930 were tested. The year 2015, had the highest number of buildings tested (1769) with 1584 of those being above the USEPA recommended action level of 4 pCi/L. The maximum pre-mitigation level in Fairfield County was 85 pCi/L in 2016 and 200 pCi/L in 2015. In 2016, the number of tests exceeding the 4 pCi/L action level was 665.

The maps, charts and tables that can be accessed using this data aid health professionals and the public in identifying areas that may need more testing or where levels have been found to be high and would need more mitigation.

Search radon data at https://ephtracking.cdc.gov/DataExplorer/index.html?c=31&i=-1&m=-1#/

For more information on radon in Connecticut:
Connecticut Department of Public Health Radon Program
website: http://www.ct.gov/dph/radon

Citation: Accessed From Environmental Public Health Tracking Network: www.cdc.gov/ephtracking. Accessed on 09/14/2018