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.

This is a link to the Department of Environmental Protection (DEP) Open Data Portal which is operated by DEP's Geospatial Data Center on an Esri platform.