Strontium

Cal-am Water Company - Duarte

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	0.439 ppb	18	18	0.306 ppb - 0.566 ppb
2014	N/A	0	0	N/A
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
2013-03-06	21126801	0.494 ppb
2013-03-06	21127101	0.507 ppb
2013-03-06	21127001	0.442 ppb
2013-03-12	21126901	0.306 ppb
2013-03-12	21126401	0.309 ppb
2013-03-12	21126301	0.378 ppb
2013-03-13	21127201	0.505 ppb
2013-03-13	21269901	0.453 ppb
2013-03-13	21126501	0.427 ppb
2013-09-10	23394101	0.474 ppb
2013-09-10	23394501	0.436 ppb
2013-09-10	23394701	0.453 ppb
2013-09-10	23394601	0.312 ppb
2013-09-10	23394201	0.341 ppb
2013-09-10	23394801	0.511 ppb
2013-09-10	23394401	0.566 ppb
2013-09-10	23394301	0.446 ppb
2013-09-10	23394901	0.550 ppb