Learn the Issues

This page shows all of the pages at www.epa.gov that are tagged with Learn the Issues.

  • Explain Working Levels (WL) and Picocuries Per Liter of Air (pCi/L).

    Radon test results may be reported in three different measures – picocuries per liter (pCi/L), Working Levels (WL) and becquerels per meter cubed (Bq/m 3). If your test result is in pCi/L, the EPA recommends you fix your home if the radon level is 4 pCi/L (150 Bq/m 3)or higher…

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  • Regulations, Guidance, and Additional Information about the Marine Protection, Research and Sanctuaries Act

    Provides links to MPRSA regulations, guidance documents for the transport and disposition of materials into the ocean, and important MPRSA websites

  • Standards of Practice

    For builders and contractors, check out the resources listed on this page and learn about radon-resistant construction.

  • Marine Protection Permitting in EPA Region 4

    Overview of marine protection permitting in Southeast United States. Includes materials dumped in the Region, MPRSA permits issues, dredged material testing guidance, ocean site descriptions and information, regional dredging teams and other partnerships

  • What is Radon?

    Radon is a radioactive gas that forms naturally when uranium, thorium, or radium, which are radioactive metals break down in rocks, soil and groundwater. People can be exposed to radon primarily from breathing radon in air that comes through cracks and gaps in buildings and homes. Because radon comes naturally…

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  • Radon Resources for Real Estate Community

    For home buyers and sellers, check out the resources listed on this page and learn how to fix your home and learn about radon-resistant construction.

  • How much can a radon mitigation system cost?

    You have tested your home for radon, but now what? If you have tested your home for radon and confirmed that you have elevated radon levels, 4 picocuries per liter (150 becquerels per cubic meter (Bq/m 3))in air (pCi/L) or higher, our guidance can help you: Select a qualified radon…

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  • Are we sure that radon is a health risk?

    The EPA already has a wealth of scientific data on the relationship between radon exposure and the development of lung cancer. The scientific experts agree that the occupational miner data is a very solid base from which to estimate risk of lung cancer deaths annually. While residential radon epidemiology studies…

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  • How often should I test/retest my home for radon?

    Our general guidance from A Citizen's Guide to Radon - (December 2016, EPA 402/K12/002) - suggests: If your living patterns change and you begin occupying a lower level of your home (such as a basement) you should retest your home on that level. Even if your test result is below…

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  • How to Protect Your Family from Radon When Buying a Newly Built Home

    When buying a recently built home, EPA recommends you check for radon resistant features and follow certain techniques if you purchase a home in a high radon area.

  • Where I work we manufacture products from granite and other natural materials. Should I be concerned about radiation in my workplace?

    I work in a granite fabricating and finishing shop. Is there a radon risk in my workplace? Based on existing studies, most types of granite used in countertops and other aspects of home construction are not typically known to be major contributors of radiation and radon in the average home…

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  • Radon-Resistant New Construction for Home Buyers

    Learn about the facts of radon and radon-resistance new construction for your home

  • EPA's Lead Laws, Regulations & Policies

    This page describes EPA regulations relating to lead-based paint and other lead hazards.

  • Good Samaritan Remediation of Abandoned Hardrock Mines Program

    An overview of the new Good Samaritan Remediation of Abandoned Hardrock Mines Program

  • Mold and Indoor Air Quality in Schools

    Moisture problems in school buildings can be caused by a variety of conditions, including roof and plumbing leaks, condensation and excess humidity.

  • Wasted Food Scale

    This page focuses on the wasted food scale, which prioritizes actions that prevent and divert wasted food from disposal.

  • Indoor AirPlus Media

    Indoor airPLUS media will help you discover how IAP homes are designed to improve indoor air quality for a safer and healthier home.

  • Indoor AirPlus Sales and Marketing Resources

    Presented are useful materials to help you build homes that meet Indoor airPLUS specifications and to promote Indoor airPLUS qualified homes. These materials are FREE of charge and are available in PDF.

  • Indoor Air Quality Design Tools for Schools

    The information available here is presented as a tool to help school districts and facility planners design the next generation of learning environments so that the school facility will help, rather than hinder, schools in achieving their core mission

  • What is EPA doing about Indoor Air Quality (IAQ) in Schools?

    EPA's IAQ Tools for Schools Program is devoted to providing outreach products and services to schools to help them create and maintain healthy indoor environments and implementation is a top priority and teaches school staff to: Prevent and resolve IAQ problems; Identify practical and low-cost/no-cost solutions to fixing IAQ problems…

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