Strontium

City of Pasadena

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	0.174 ppb	30	30	0.0799 ppb - 0.298 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
2014-03-31	1078962005	0.131 ppb
2014-03-31	1078962017	0.172 ppb
2014-03-31	1078962021	0.214 ppb
2014-03-31	1078962019	0.262 ppb
2014-03-31	1078962023	0.253 ppb
2014-03-31	1078962009	0.136 ppb
2014-03-31	1078962011	0.141 ppb
2014-03-31	1078962001	0.222 ppb
2014-03-31	1078962003	0.145 ppb
2014-03-31	1078962013	0.154 ppb
2014-03-31	1078962015	0.125 ppb
2014-03-31	1078962007	0.185 ppb
2014-04-16	2002669010	0.298 ppb
2014-04-16	2002669001	0.171 ppb
2014-04-16	2002669005	0.158 ppb
2014-04-16	2002669003	0.164 ppb
2014-04-16	2002669007	0.162 ppb
2014-09-02	2026794003	0.152 ppb
2014-09-02	2026794001	0.138 ppb
2014-09-02	2026794007	0.151 ppb
2014-09-02	2026794005	0.144 ppb
2014-09-03	2027138002	0.238 ppb
2014-09-22	2031681001	0.241 ppb
2014-09-22	2030537003	0.0799 ppb
2014-09-22	2030537005	0.0818 ppb
2014-09-22	2030537008	0.0822 ppb
2014-09-22	2030537001	0.0858 ppb
2014-09-29	2031681003	0.241 ppb
2014-09-29	2031681005	0.255 ppb
2014-09-29	2031681008	0.244 ppb