Strontium

Butte-Silver Bow Water Department

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	0.0804 ppb	12	12	0.0641 ppb - 0.102 ppb
2014	0.0844 ppb	12	12	0.0709 ppb - 0.0976 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
2013-07-10	201303437	0.100 ppb
2013-07-10	201303447	0.0934 ppb
2013-07-10	201303445	0.102 ppb
2013-07-10	201303443	0.0665 ppb
2013-07-10	201303441	0.0641 ppb
2013-07-10	201303439	0.0649 ppb
2013-10-17	201305594	0.0912 ppb
2013-10-17	201305598	0.0898 ppb
2013-10-17	201305596	0.0662 ppb
2013-10-17	201305600	0.0694 ppb
2013-10-30	201305881	0.0781 ppb
2013-10-30	201305879	0.0789 ppb
2014-01-16	201400285	0.0852 ppb
2014-01-16	201400283	0.0961 ppb
2014-01-16	201400287	0.0709 ppb
2014-01-16	201400291	0.0873 ppb
2014-01-16	201400293	0.0743 ppb
2014-01-16	201400289	0.0976 ppb
2014-04-28	201401603	0.0828 ppb
2014-04-28	201401599	0.0880 ppb
2014-04-28	201401605	0.0885 ppb
2014-04-28	201401607	0.0800 ppb
2014-04-28	201401597	0.0787 ppb
2014-04-28	201401601	0.0838 ppb