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Radon Testing

Radon Testing Indicators

Radon Test Data from Labs

This indicator provides radon testing data at the state and county level for most of the continental United States. National radon testing laboratories provide these data to the Tracking Network. Data available include number of buildings tested; number and percent of pre-mitigation* tests by radon level; median pre-mitigation* radon levels in tested buildings; and maximum pre-mitigation* radon levels in tested buildings.

Radon Test Data from States

This indicator provides radon testing data at the state and county level for some Tracking Program-funded states. Individual states provide these data to the Tracking Network. Available data include number of buildings tested; number and percent of pre-mitigation* tests by radon level; number and percent of post-mitigation* tests by radon level; median pre-mitigation* test levels of radon; and maximum pre-mitigation* levels of radon.

* All pre-mitigation data include those test results not designated as pre- or post-mitigation.

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