Strontium

California American Water Company - Coronado

Strontium is a metal that accumulates in the bones. Radioactive strontium-90 can cause bone cancer and leukemia, and any form of strontium at high doses can harm bone health.

MORE ABOUT THIS CONTAMINANT

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2013	0.656 ppb	8	8	0.560 ppb - 0.840 ppb
2014	0.632 ppb	8	8	0.505 ppb - 0.749 ppb
2015	N/A	0	0	N/A
2016	N/A	0	0	N/A
2017	N/A	0	0	N/A
2018	N/A	0	0	N/A
2019	N/A	0	0	N/A

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 1,500 ppb

The EWG Health Guideline of 1,500 ppb for strontium was defined by the Environmental Protection Agency as a benchmark for testing under the Unregulated Contaminant Monitoring Rule program. This health guideline protects against harm to bones.

ppb = parts per billion

All test results

Date	Lab ID	Result
2013-08-14	23026601	0.840 ppb
2013-08-14	23026401	0.712 ppb
2013-08-14	23026501	0.718 ppb
2013-09-12	23743001	0.651 ppb
2013-11-14	24009801	0.560 ppb
2013-11-14	24009501	0.616 ppb
2013-11-14	24009601	0.563 ppb
2013-11-14	24009701	0.587 ppb
2014-02-12	24741901	0.519 ppb
2014-02-12	24741601	0.732 ppb
2014-02-12	24741701	0.523 ppb
2014-02-12	24741801	0.727 ppb
2014-05-14	25563801	0.749 ppb
2014-05-14	25563901	0.505 ppb
2014-05-14	25564001	0.740 ppb
2014-05-14	25564101	0.559 ppb