Radium-228

CAS Number

15262-20-1

Synonym

Radium isotope

Occurrence/Use

Naturally occurring product of thorium decay.

More information about Radium-228

California Public Health Goals Data

Update Date:
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:
Related Downloads:
California PHG Comments: MCL reflects combined radium-226 and radium-228.
OEHHA 2013. Health Risk Information for Public Health Goal Exceedance Reports