Written by: Kate Holder

Category: Radon Mitigation, Radon Testing

Published: January 3, 2025

Understanding Radon and Its Risks

Radon is a naturally occurring, radioactive gas that seeps into homes through cracks in foundations and other openings. Prolonged exposure to high levels of radon is a leading cause of lung cancer in non-smokers, according to the Environmental Protection Agency (EPA). In Montgomery County, Maryland, radon levels can vary greatly depending on location and home construction. Knowing the radon levels in your area is critical for protecting your family’s health.

What Are Safe Radon Levels?

Radon levels are measured in picocuries per liter of air (pCi/L). Here’s a breakdown of radon levels and their implications:

Radon Level (pCi/L)	Risk Level	Recommended Action
Below 2 pCi/L	Low	No action needed
2 – 4 pCi/L	Moderate	Consider mitigation
Above 4 pCi/L	High	Immediate mitigation recommended

The EPA recommends taking action if your home’s radon level is 4 pCi/L or higher.

Radon Levels in Montgomery County, MD

Montgomery County, MD, has a moderate to high risk of radon exposure due to its unique geology. Many homes in this area, particularly those with basements, are susceptible to elevated radon levels. In fact, local testing has shown that approximately 40% of homes in the county have radon levels above 4 pCi/L.

Neighborhood Hotspots

Certain neighborhoods in Montgomery County report consistently higher radon levels. These areas include:

• Bethesda
• Rockville
• Potomac
• Gaithersburg

Homeowners in these areas are strongly encouraged to conduct regular radon testing and take mitigation measures when necessary.

How to Test for Radon

Testing for radon in your home is a straightforward process. You have two main options:

1. DIY Radon Test Kits
   You can purchase a radon test kit at most hardware stores or online. These kits are affordable and easy to use. Follow the instructions carefully to ensure accurate results. Several organizations in Montgomery County provide low-cost or free radon test kits to residents. For example, during the winter months, Montgomery County DEP runs a radon test kit program for qualifying homeowners. Be sure to check their website for availability. Local Radon Testing Events: Occasionally, the county organizes radon awareness events where residents can learn more about radon and obtain discounted testing kits. You can stay updated by visiting the Montgomery County events calendar
2. Professional Radon Testing. BOOK ONLINE WITH ALFA AIR AGENCY
   Hiring a licensed radon professional is recommended, especially if you’ve never tested your home before or have previously detected high radon levels.

Radon Mitigation: What to Do if Levels Are High

If your radon test results show levels above 4 pCi/L, you’ll need to take steps to reduce radon levels in your home. Radon mitigation systems typically involve:

• Installing a Sub-Slab Depressurization System (SSD): This system prevents radon from entering your home by venting it outside.
• Sealing Foundation Cracks: Reducing the entry points can help lower radon levels.
• Improving Ventilation: Increasing airflow in your home can help disperse radon gas.

Be sure to hire a contractor certified by the National Radon Proficiency Program (NRPP) or the National Radon Safety Board (NRSB).

FAQs on Radon in Montgomery County, MD

1. How often should I test my home for radon?

It’s recommended to test your home every two years, especially if you’ve made structural changes or installed a mitigation system.

2. Are radon levels higher in winter?

Yes, radon levels tend to be higher in winter when homes are sealed against cold weather, reducing ventilation.

3. Is radon only a problem in older homes?

No. Both old and new homes can have radon issues. It depends on the underlying geology and construction features.

4. Does Montgomery County require radon testing during real estate transactions?

Yes, Montgomery County law requires radon testing for any home sold in the county. Sellers must provide buyers with test results, ensuring transparency and safety during real estate transactions. For more details, check the official county guidelines:
Montgomery County Radon

5. Are there any grants available for radon mitigation in Montgomery County?

Yes, some state and local programs offer financial assistance or rebates for radon mitigation. Homeowners can learn more by contacting the Maryland Department of Housing and Community Development.

Stay Safe by Staying Informed

Radon is an invisible threat, but with regular testing and timely mitigation, homeowners in Montgomery County, MD, can ensure a safer living environment. Whether you’re buying a new home or maintaining an existing one, always keep radon safety in mind.

If you’re concerned about radon in your home, consider scheduling a test today. Staying proactive is key to safeguarding your family’s health.

Useful Local Resources

• Montgomery County Department of Environmental Protection – Radon Information
  Visit their website here
  This resource offers guidelines on radon testing, county-specific radon programs, and a list of certified radon professionals.
• Maryland Department of Health – Radon Program
  The state’s radon program provides additional information about radon levels in Maryland, along with resources for residents to access radon test kits.