CALIFORNIA
The AARST Radon Report Card: Risk and Response
Population and Lung Cancer      Total Population: 39,461,588
Lung Cancer Deaths:
11,078
Age-Adjusted Lung Cancer Incidence Rate
(per 100,000) 37

Lung Cancer Cases
16,409
Estimated Radon-Induced Lung Cancer Cases
  1,117

Buildings and Exposure Potential
Pre-Mitigation Radon Tests: 9,415
Percent by Radon Level  
 
  < 2 pCi/L

 
  ≥ 2 to < 4 pCi/L

 
  ≥ 4 pCi/L

Housing Units by Structure Type
1 to 4 Units 5 or More Units Total
Existing 10,826,136 3,334,679 14,160,815
New 62,745 47,452 110,197
Public Schools: 10,327
Statewide Radon Policies
Credential Required Private Certification
Radon Standards in Effect ANSI-AARST
Homebuyer Protection Required Disclosure Only
Radon System Requirement for New Homes No
    Type of New Home Where Required N/A
    Standard/Code for Radon System in New Homes N/A
School Testing Required No
Radon System Requirement for New Schools No