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Radon-222 levels in New York State homes.

R L Perritt1, T D Hartwell, L S Sheldon

  • 1Research Triangle Institute, NC 27709.

Health Physics
|February 1, 1990
PubMed
Summary
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This study measured radon (222Rn) levels in over 2000 New York homes. Most homes had radon concentrations below recommended safety limits, indicating low statewide risk.

Area of Science:

  • Environmental Health
  • Radiological Protection
  • Indoor Air Quality

Background:

  • Radon (222Rn) is a naturally occurring radioactive gas that can accumulate in homes.
  • Elevated indoor radon levels pose a significant health risk, particularly lung cancer.
  • Statewide data on indoor radon concentrations are crucial for public health risk assessment.

Purpose of the Study:

  • To measure annual 222Rn concentrations in a representative sample of New York single-family homes.
  • To assess the prevalence of elevated indoor radon levels across the state.
  • To inform public health strategies for radon mitigation.

Main Methods:

  • A statewide survey of over 2000 owner-occupied homes using a random-digit-dialing approach.
  • Alpha-track detectors were mailed to eligible households for placement in living areas and basements.

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  • Detectors were deployed for 2 months (heating season) and 1 year to capture seasonal and annual variations.

    • Main Results:

    • The statewide median heating-season living-area radon concentration was 31.6 Bq m-3.
    • Median annual living-area and basement radon concentrations were 24.0 Bq m-3 and 51.8 Bq m-3, respectively.
    • Approximately 95% of living-area and 86% of basement radon readings were below 148 Bq m-3 (4 pCi L-1).

    Conclusions:

    • The majority of New York homes surveyed exhibit indoor radon concentrations below established safety guidelines.
    • A small percentage of homes, particularly basements, showed elevated radon levels requiring attention.
    • The findings support targeted radon testing and mitigation efforts in specific high-risk areas or homes.