Sources
Official sources behind the radon guidance.
The site keeps health, legal, certification, and action-level claims tied to PA DEP and EPA guidance. Local fulfillment claims should stay conservative until a real provider relationship exists.
Core facts used
What the pages are allowed to say.
- EPA uses 4.0 pCi/L as the action level for mitigation.
- EPA recommends considering mitigation between 2.0 and 4.0 pCi/L.
- PA DEP says Pennsylvania requires separate certification for radon testing, mitigation, and laboratory activities.
- PA DEP says about 40% of tested Pennsylvania homes are above EPA's 4.0 pCi/L action guideline.
- Post-mitigation testing and periodic retesting are important to confirm system performance.
Official links
Photo credits
Creative Commons local imagery.
Photographs are used for local context only. They do not imply endorsement, certification, or a service relationship.