Radon is an invisible but dangerous gas that can build up in homes and workplaces, posing serious health risks. In this post, you’ll learn what radon levels are considered unsafe, the health risks associated with elevated radon, and how to measure and manage radon exposure, especially in Windsor-Essex County and Chatham-Kent.

What is Radon?

Radon is a naturally occurring radioactive gas that comes from the decay of uranium found in soil and rock. Since it is invisible and odorless, radon can accumulate indoors without being detected. Breathing in high levels of radon over time has been linked to an increased risk of lung cancer, making it critical for residents in areas with known radon potential, like Windsor-Essex and Chatham-Kent, to understand safe levels.

What Level of Radon is Considered Unsafe?

According to Health Canada, radon levels above 200 becquerels per cubic meter (Bq/m³) are considered unsafe. This threshold is based on research that shows higher radon exposure significantly increases the risk of lung cancer, especially for smokers. For comparison:

  • 0 – 100 Bq/m³: Considered low risk, though lower levels are always preferable.
  • 100 – 200 Bq/m³: Moderate risk; retesting and preventive measures are recommended.
  • 200 Bq/m³ and above: Unsafe; immediate steps should be taken to reduce radon levels to protect health.

For buildings with radon levels at or above 200 Bq/m³, Health Canada and the Ontario Government recommend radon mitigation strategies to reduce indoor radon concentrations.

Health Risks of High Radon Levels

Exposure to radon is the second leading cause of lung cancer in Canada after smoking. Long-term inhalation of radon particles can damage lung tissue and increase the risk of cancer. Health Canada states that for non-smokers, radon is the primary cause of lung cancer, emphasizing the importance of testing and remediation for all building occupants.

Radon Levels in Windsor-Essex County and Chatham-Kent

Due to geological factors, properties in Windsor-Essex County and Chatham-Kent can be prone to elevated radon levels, especially in homes and buildings with basements or inadequate ventilation. Radon testing is crucial in these areas to ensure levels are within safe limits.

How to Test for Radon

Radon testing is the only way to know if radon levels are elevated. There are two main types of tests:

  1. Short-Term Tests (2-7 days): Useful for a quick indication of radon levels but less accurate for long-term exposure assessment.
  2. Long-Term Tests (minimum 91 days): Recommended by Health Canada for a comprehensive assessment, especially in winter when buildings are more sealed.

Long-term testing provides a more reliable average of radon levels over time, which is crucial for accurate assessment and decision-making.

What to Do if Your Radon Levels are Unsafe

If your radon test shows levels at or above 200 Bq/m³, consider these mitigation methods:

  • Sealing Cracks and Openings: While not a complete solution, sealing cracks in floors, walls, and around pipes can help reduce radon entry.
  • Installing a Radon Mitigation System: Sub-slab depressurization, a system that vents radon from beneath the building, is the most effective method for reducing indoor radon levels.
  • Improving Ventilation: Adding or upgrading ventilation can help dilute radon levels, especially in areas with limited airflow, such as basements.

Conclusion

Understanding radon levels and the associated risks is essential for maintaining a safe indoor environment. Regular testing and prompt mitigation are crucial steps in protecting health.

Contact Us Today

Contact IES Consulting Group today to schedule radon testing and learn more about our radon mitigation services for Windsor-Essex County and Chatham-Kent. Our team is here to help you ensure your property meets safe indoor air quality standards. Or visit our site for additional resources on indoor environmental safety.

author avatar
Chris Croft Technical Lead


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