Strontium

California Water Service - Livermore

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	0.398 ppb	20	20	0.130 ppb - 0.790 ppb
2015	0.449 ppb	7	7	0.260 ppb - 0.630 ppb
2016	0.450 ppb	1	1	0.450 ppb
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
2014-01-07	201401080509AM	0.260 ppb
2014-01-15	201401170426AM	0.310 ppb
2014-01-16	201401170415AM	0.280 ppb
2014-04-02	201404030435AM	0.340 ppb
2014-04-02	201404030398AM	0.570 ppb
2014-04-02	201404030405AM	0.270 ppb
2014-04-09	201404100752AM	0.360 ppb
2014-04-09	201404100774AM	0.550 ppb
2014-04-09	201404100686AM	0.230 ppb
2014-04-16	201404220200AM	0.760 ppb
2014-04-16	201404220192AM	0.290 ppb
2014-05-07	201405080518AM	0.500 ppb
2014-07-22	201407250137AM	0.130 ppb
2014-07-22	201407250234AM	0.660 ppb
2014-07-23	201407240522AM	0.210 ppb
2014-07-23	201407240423AM	0.260 ppb
2014-10-14	201410150138AM	0.310 ppb
2014-10-15	201410160432AM	0.790 ppb
2014-10-16	201410170106AM	0.500 ppb
2014-10-22	201410230517AM	0.380 ppb
2015-01-13	201501140673AM	0.490 ppb
2015-02-18	201502190937AM	0.630 ppb
2015-02-18	201502190946AM	0.260 ppb
2015-02-18	201502191037AM	0.480 ppb
2015-03-25	201503260899AM	0.340 ppb
2015-04-21	201504220606AM	0.440 ppb
2015-12-15	201512160543AM	0.500 ppb
2016-01-18	201601190227AM	0.450 ppb