Strontium

Cal/Am Water Company - San Marino

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
2014	0.407 ppb	30	30	0.220 ppb - 1.06 ppb
2015	0.714 ppb	2	2	0.245 ppb - 1.18 ppb
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
2014-05-12	25566601	0.257 ppb
2014-05-13	25565701	1.01 ppb
2014-05-13	25566701	0.245 ppb
2014-05-13	25567201	0.273 ppb
2014-05-13	25566401	0.379 ppb
2014-05-13	25566901	0.245 ppb
2014-05-14	25566801	0.265 ppb
2014-05-14	25565501	0.370 ppb
2014-05-14	25565801	0.381 ppb
2014-05-14	25565601	0.237 ppb
2014-05-14	25567301	0.358 ppb
2014-05-19	25566501	0.256 ppb
2014-06-12	26336401	1.06 ppb
2014-07-14	25566301	0.253 ppb
2014-08-12	26624501	0.905 ppb
2014-10-06	27318401	1.04 ppb
2014-11-04	27434901	0.251 ppb
2014-11-04	27434701	0.233 ppb
2014-11-05	27433901	0.330 ppb
2014-11-05	27435301	0.261 ppb
2014-11-05	27435701	0.351 ppb
2014-11-10	27435601	0.220 ppb
2014-11-10	27434101	0.319 ppb
2014-11-10	27435401	1.05 ppb
2014-11-10	27435001	0.226 ppb
2014-11-12	27434001	0.279 ppb
2014-11-12	27434201	0.285 ppb
2014-11-12	27434801	0.342 ppb
2014-11-12	27435101	0.232 ppb
2014-11-12	27435201	0.293 ppb
2015-02-02	28247101	1.18 ppb
2015-02-02	28246601	0.245 ppb