Test 2025 - Radiological Decontamination – Outdoor Residential Query Results

Please Note: The page you are viewing is intended for internal use in supporting EPA’s Radiological Decontamination Query Tool. It is not intended to provide information to users of the query.

If you have trouble accessing information contact Amelia McCall (McCall.Amelia@epa.gov) and alternative accommodations will be made.

The information provided in the outdoor residential decontamination report includes information on simple methods citizens can use as guidance to assist in decontaminating outdoor residential surfaces after a radiological contamination incident.

Ten outdoor cleaning activities were tested, based on ease of use and availability, to evaluate decontamination of both wet and dry contamination.

Twenty common outdoor surfaces (including roofing material, siding, and hardscape surfaces) were chosen for the tests, based on prevalence and the cost and inconvenience associated with their removal and replacement. 

Disclaimer: The information provided through this query represents information that is currently available in the published U.S. EPA Evaluation Report. Links and citations are provided for the full content of the report, along with the corresponding query results. Mention of trade names, products, or services does not convey EPA approval, endorsement or recommendation.

• Acronyms and Abbreviations
• Definitions
• Decontamination Technologies and Outdoor Surfaces Tested (PDF) (1 pg, 105 KB)