Strontium

Harris County MUD 55 Heritage Park

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	0.308 ppb	16	16	0.292 ppb - 0.337 ppb
2014	0.253 ppb	4	4	0.231 ppb - 0.262 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
2013-05-23	Q1301474011	0.307 ppb
2013-05-23	Q1301474007	0.300 ppb
2013-05-23	Q1301474009	0.305 ppb
2013-05-23	Q1301474001	0.297 ppb
2013-05-23	Q1301474003	0.298 ppb
2013-05-23	Q1301474005	0.301 ppb
2013-08-27	Q1306116001	0.313 ppb
2013-08-27	Q1306116003	0.313 ppb
2013-08-27	Q1306116005	0.309 ppb
2013-08-27	Q1306116007	0.316 ppb
2013-11-04	Q1311140001	0.295 ppb
2013-11-04	Q1311140005	0.310 ppb
2013-11-04	Q1311140011	0.330 ppb
2013-11-04	Q1311140003	0.292 ppb
2013-11-04	Q1311140007	0.337 ppb
2013-11-04	Q1311140009	0.309 ppb
2014-02-18	Q1404898003	0.231 ppb
2014-02-18	Q1404898007	0.259 ppb
2014-02-18	Q1404898001	0.262 ppb
2014-02-18	Q1404898005	0.259 ppb