What is the purpose of the U.S. EPA's radon zone map?

The purpose of the U.S. EPA's radon zone map is to indicate areas where radon control techniques may be cost-effective. This map categorizes regions based on the estimated potential for radon levels to be elevated, which helps inform homeowners, builders, and local governments about the likelihood of radon presence in those areas. Knowing whether a location falls into a high, moderate, or low radon zone allows for better planning and implementation of radon mitigation strategies where they will have the most impact.

Additionally, the distinction between these zones is important for real estate transactions and can guide decisions regarding testing and mitigation efforts. Awareness of the potential radon risk in a specific area equips stakeholders to take appropriate action, potentially reducing health risks related to long-term radon exposure.

Other options, such as identifying hazardous waste sites or providing emergency evacuation routes, are unrelated to the purpose of the radon zone map, as they focus on entirely different public health and safety concerns. Similarly, listing approved radon mitigation contractors does not align with the map's intent, which is to provide geographical risk assessments rather than lists of service providers.