Radium-228
CAS Number
15262-20-1Synonym
Radium isotope
Occurrence/Use
Naturally occurring product of thorium decay.
Cancer Potency Information
| Latest Criteria: | California Public Health Goals |
|---|
Water
California Public Health Goals Data
| Health Risk Category: | Carcinogenicity |
|---|---|
| Public Health Goal (mg/L): | 0.019 pCi/L |
| Public Health Goal - Download: | phgradium030306.pdf |
| Cancer Risk at PHG: | 0.000001 |
| MCL value (mg/L): | 5 pCi/L |
| Cancer Risk at MCL: | 0.0003 |
| Last PHG Revision : | 2006 |
| California PHG Comments: |
MCL reflects combined radium-226 and radium-228. OEHHA 2013. Health Risk Information for Public Health Goal Exceedance Reports |