PA Department of Environmental Protection (DEP) Radon Test Result Data provided to the Environmental Protection Agency (EPA) through the National Environmental Information Exchange Network as requested, to State and Nationally Authorized Trading Partners. Data includes Radon Test Results measured value, test type, building location (where test was performed), county, city, zip code and date test was completed. Includes data from 1989 through March, 2017.

The radon mitigation database keeps track of when mitigation has occurred at locations and of the levels of radiation reduction achieved. The data derived in the State of Pennsylvania is published and searchable online on the www.pa.gov website. This data will be updated annually for the prior calendar year in the first Quarter of the following year.