Radium-228
CAS Number
15262-20-1Synonym
Radium isotope
Occurrence/Use
Naturally occurring product of thorium decay.
California Public Health Goals Data
Update Date: | |
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Public Health Goal (mg/L): | 0.019 pCi/L |
Health Risk Category: | Carcinogenicity |
Cancer Risk at Public Health Goal: | 0.000001 |
CA Maximum Contaminant Level (mg/L): | 5 pCi/L |
Cancer Risk at Maximum Contaminant Level (MCL): | 0.0003 |
Public Health Goal Technical Support Document: |
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California PHG Comments: |
MCL reflects combined radium-226 and radium-228. OEHHA 2013. Health Risk Information for Public Health Goal Exceedance Reports |