Strontium

Harris County WCID 36

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	0.253 ppb	17	17	0.161 ppb - 0.365 ppb
2014	0.283 ppb	2	2	0.280 ppb - 0.286 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
2013-04-01	3D02018-04	0.365 ppb
2013-04-01	3D02018-01	0.326 ppb
2013-05-06	3E07011-04	0.172 ppb
2013-05-06	3E07011-07	0.288 ppb
2013-05-06	3E07011-01	0.277 ppb
2013-05-06	3E07011-10	0.247 ppb
2013-05-16	3E17010-01	0.258 ppb
2013-07-08	3G09010-01	0.300 ppb
2013-07-08	3G09010-04	0.300 ppb
2013-10-07	3J08018-04A	0.258 ppb
2013-10-07	3J08018-01A	0.256 ppb
2013-11-05	3K06014-12	0.166 ppb
2013-11-05	3K06014-14	0.172 ppb
2013-11-05	3K06014-04	0.161 ppb
2013-11-05	3K06014-01	0.274 ppb
2013-11-05	3K06014-10	0.166 ppb
2013-11-05	3K06014-07	0.319 ppb
2014-01-07	4A08012-04	0.286 ppb
2014-01-07	4A08012-01	0.280 ppb